Conveners
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 1 - Optical Sensors 1
- Shahraam Afshar Vahid (Laser Physics and Photonic Devices Laboratories, University of South Australia, SA 5095, Australia)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 2 - Astrophotonics
- Simon Gross (Macquarie University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 4 - Biophotonics 1
- Judith Dawes (Macquarie university)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 3 - Optical Sensors 2
- Jiawen Li (University of Adelaide)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 6 - Biophotonics 2
- Irina Kabakova (University of Technology Sydney)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 5 - Atom Optics
- Halina Rubinsztein-Dunlop (The University of Queensland)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 7 - Fibre and Communtications
- Simon Fleming
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 8 - Quantum Optics 1
- Sejeong Kim (University of Melbourne)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 10 - Quantum Optics 2
- Mikolaj Schmidt (Macquarie University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 9 - THz Photonics
- Alessandro Tuniz (The University of Sydney)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 12 - Lasers
- Helen Pask (Macquarie University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 11 - Optoacoustics
- Michael Steel
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 14 - Microscopy and Imaging 1
- Frédérique Vanholsbeeck (The University of Auckland)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 13 - Nanophotonics 1
- Alexander Solntsev (University of Technology Sydney)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 16 - Microscopy and Imaging 2
- Brendan Kennedy (The University of Western Australia)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 15 - Nanophotonics 2
- Igor Aharonovich (University of Technology Sydney)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 17 - Nanophotonics 3
- Lukas Wesemann (University of Melbourne, ARC Centre of Excellence for Transformative Meta-Optical Systems)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 18 - Fabrication and Integration 1
- Baohua Jia (RMIT University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 19 - Nonlinear Optics 1
- Martijn De Sterke (University of Sydney)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 20 - Nonlinear Optics 2
- Yana Izdebskaya (Australian National University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 21 - Fabrication and Integration 2
- Lan Fu (The Australian National University)
Australian and New Zealand Conference on Optics and Photonics: ANZCOP 22 - Novel Materials
- Sejeong Kim (University of Melbourne)
Astrophotonics lies at the interface of photonics and astronomical instrumentation. The power of photonics and Adaptive Optics, together with the development of new photonic devices, strengthens the case for astrophotonics year by year.
Recent advances in device physics, nanotechnology, AI, and sensor fusion is leading to a revolution in smart sensor technology to provide multi-faceted interfaces to the three-dimensional physical, chemical, and data environment, enabling high-performance information gathering and real-time situational awareness.
Adaptive optics (AO) is critical in astronomy, optical communications, remote sensing, and optical beam manipulation to correct distortions caused by propagation through media like the Earth’s atmosphere or living tissue.
We report robust fibre Bragg grating (FBG) sensors that optically measure environmental conditions in harsh, corrosive, biofouling wastewater networks over long periods.
An overview of the free-space optical communications research being conducted at UWA, with emphasis on the development of the Western Australian Optical Ground Station and results from field tests with a deployable mobile optical terminal.
Demonstrating the first positive-patterning process for creating passivated waveguides in porous silicon films using laser writing in a controllable atmosphere to retain an open pore structure suitable for highly sensitive optical sensor applications.
We present the key considerations in our design for using optical interferometry to phase-lock optical phased arrays with up to 100 million emitters, needed for the ambitious proposed Breakthrough Starshot mission.
The measurement of optical wavelengths using speckle is a promising tool for compact and precise wavemeters/spectrometers. We explore the limits of a speckle pattern-based wavemeter, aiming to achieve a measurement precision better than an attometer.
An integrated optic 4-telescope beam combiner is being developed for the detection of exoplanets using nulling interferometry. The beam combiner, fabricated using ultrafast laser inscription, is optimised for achromatic behaviour in the mid-infrared (3.5-4.0 µm).
Rotational Optical Tweezers provides a unique tool to perform dynamic microrheology of intracellular vesicles using an internalised vaterite microsphere. Here, we discuss the required calibration of trapping power and the probe radius for successful microviscometry.
OPTICA Vice-President Keynote Talk
Authors: Gerd Leuchs 1,2,3, Vsevolod Salakhutdinov 1, Margaret Hawton 4, Luis L. Sánchez-Soto 1,5
1 Max Planck Institute for the Science of Light, Erlangen, Germany
2 Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
3 Nexus for Quantum Technologies, University of Ottawa, Canada
4 Lakehead University, Thunder Bay, Canada
5 Universidad...
Using optical tweezers for the better understanding of how the microrheology of reproductive cells and their local environment during in vitro procedures is correlated to embryo development, implantation success, pregnancy, and live birth.
This presentation will cover the translation of optical imaging to address challenges in endocrine surgery. Three different techniques will be used to (a) detect the parathyroid gland, (b) perfusion of the gland and (c) visualize the nerves during surgery.
Calculating the Larmor precession phase evolution to measure magnetic fields at arbitrary frequencies with an Non-linear Magneto-Optical Rotation (NMOR) atomic magnetometer.
We model the effects of coating nanodiamonds with glass, to mitigate some of the particle-to-particle variability with as-received nanodiamonds by creating a more uniform spherical shape. Such new particles represent a new platform for multi-function quantum biosensing.
Skin and prostate cancer have quite high incidence rates in New Zealand, Australia and the rest of the world. Identifying suspicious tissue for diagnostic and biopsy is a core challenge for treating both of these diseases. Optical spectroscopy offers rich datasets to improve the identification of diseased tissue. This presentation will discuss our recent advances.
We report on a polyurethane capillary fiber sensor that transduces body movements containing information of physiological parameters such as respiratory and pulse rates. We also investigate key factors, like transfer function, for successful system design.
Refinement and adaptation of the distributed feedback fiber laser based hydrophone for the remote monitoring of marine traffic is reported. Hydrophone bandwidth and multiplexing noise have been mitigated; a substantial increase in hydrostatic pressure compensation depth has been demonstrated.
We present an overview of recent research in our Atom Optics lab, including the development of magnetic optical elements for manipulating beams of ultra-cold atoms, magnetic microstructures, and time crystals using ultra-cold atoms bouncing on an atom mirror.
We present an optical methodology for classifying embryo metabolism based on hyper-spectral imaging and artificial intelligence. It successfully distinguishes oocytes from old and young mice and control from metabolically altered embryos, with potential to empower embryologists in in-vitro fertilization clinics.
We study spin-exchange collision as a route to thermally robust entanglement of two atoms in a microtrap. For probing it, we perform a Hong-Ou-Mandel experiment in which a Raman transition pulse plays the beam splitter role and compare with simulation.
Research into a novel silk-hybrid material with capabilities of detecting pH changes in wound fluid via fluorescence spectroscopy may be implemented to assist in early detection of wound infection.
We present a compact, wireless imaging probe using a cost-effective camera-based technique, stereoscopic optical palpation, towards intraoperative tumour assessment for breast cancer surgery. This probe could help surgeons effectively remove cancer during the operation, reducing the need for follow-up surgery.
In this work, we show that light emitted from generic Ultra-Strongly Coupled system demonstrates suprising, unbounded strong bunching of photons. We explain the origin of this effect, its dependence on driving mechanism, and discuss potential applications.
We have developed a nanoparticle tracking method for direct observation of the in-vitro BBB penetration process, enabling in-depth studies of the mechanisms and pathways for nanoparticle agents to penetrate the blood-brain barrier.
We report upon a prototype optical clock using a two-colour two-photon transition in Rubidium, toward developing a compact alternative for the next generation GNSS.
Our work aims to develop a naturally extracted, transparent silk fibroin dressing, integrated with temperature and pH sensors, capable of monitoring early signs of infections, healing disruptions and scar formation via light-based measurements.
Beyond high-capacity communications, space-division multiplexing fibers bring many advantages to optical and microwave signal processing, as not only space but also chromatic dispersion are introduced as new degrees of freedom.
Room temperature optomechanical squeezing would enable many applications in sensing and quantum computing. However, decoherence makes this challenging. I will present work which show large suppression of decoherence at low mechanical frequencies, opening a path towards room temperature quantum technologies.
Spin-photon devices for on-chip silicon photonic quantum networks are demonstrated using the silicon T centre, a spin photon interface boasting long-lived spin qubits and spin-resolving optical transitions in a telecommunications band.
We built an apparatus that measures high-speed spectrally resolved mode transmission matrices. The field and modal coefficients were extracted at 3.8KHz, four times faster than the acquisition rate. This speed enables potential applications such as real-time imaging though multimode fibres.
We report on development of a transmitter and receiver for lunar optical communications. The instruments will be installed on the ANU Optical Communications Ground Station (OCGS) at Mt Stromlo Observatory in Canberra, Australia.
We present an erbium-doped optical resonator with a quality factor of $10^8$ and up to 1.2GHz of coupling to an optical transition. By probing the optical resonances we can measure the erbium's response to microwave excitation of its spin transition.
We present an all-optical-fibre frequency reference with a state-of-the-art short-term stability of 0.1 Hz/$\sqrt{\text{Hz}}$, limited by double Rayleigh backscattering. The system also reaches the fibre thermal noise limit at infrasonic frequencies.
By simulating the Hanbury Brown and Twiss experiment results (second order correlation function) for a field of emitters, we study the effectiveness of using quantum correlations in emitter localisation.
Annealing effects in femtosecond laser-inscribed mid-infrared compatible fibre Bragg gratings (FBGs) are investigated via micro-reflectivity measurements. A process window for the fabrication of FBGs with improved thermal stability is identified.
We introduce a protocol for detection and correction of arbitrary continuous phase errors in a multi-channel quantum transmission system by integrated waveguide circuits.
There is a rapid development in utilizing Terahertz frequencies for next generation of communications. In this talk, I will discuss how recent advances in photonics can facilitate low-loss and low-dispersion waveguides with exceptional bandwidth for terahertz.
Based on the recent development of the quantum computer hardware, in
this talk we present new quantum neural network models and show their
performance for classification problems. We then discuss how far we can
simplify such quantum computational systems.
Characterisation of spectral properties of blue SPEs in hBN at cryogenic temperatures. High-yield fabrication allows for extensive study of this defect class. Resonant excitation revealed phonon-broadened linewidth as well as Rabi oscillations.
We propose and numerically investigate the mechanism of vector beams formation in terahertz spectral range via engineering the band structure of spatially inhomogeneous photonic metasurfaces supporting topologically trivial and non-trivial states.
We design and demonstrate a 3D-printed horn coupler, improving the transmittance of a hybrid photonic crystal waveguide by more than 20dB, providing a convenient and economical way of customizing couplers for different waveguides and could be integrated in terahertz devices.
By structuring the spatial profile of single photons, we were able to demonstrate different types of quantum advantages in metrological applications. This method also enabled an investigation into a new type of quantum state evolution with possible future applications.
Ultra-fast THz sources have been implemented into spectrometers offering small form-factor and broadband coverage. However, their low spectral power limits use to very thin samples. Here we demonstrate implementation of high power tunable SPS lasers into a spectrometric system.
We report the first experimental generation of spatially entangled photon pairs from a metasurface incorporating a lithium niobate nonlinear thin film and the preparation of polarisation entangled states with a metasurface integrating two crossed metagratings.
Using rubidium-filled hollow-core fibres we have reduced the optical power requirements of a no noise, high-bandwidth quantum memory protocol by two orders of magnitude, a key step towards a large-scale fibre-based quantum information network.
We report synchrotron absorption measurements for MgO:LiNbO3 over a wide range of wavenumbers and temperatures. Spectra reveal the existence of an unexpected mode at 3.15 THz at all temperatures which explains the crystal's difficulty of THz generation at higher frequencies.
The coupling of light with a mechanical degree of freedom is ususally limited to exciting mechanical modes that are defined by the structure being used. We are working towards a regime where light can be used to define mechanical modes.
Creating short pulses at mid-infrared (MIR) wavelengths has been an ongoing research area for several years because of the high applications potential. This talk will discuss different schemes for creating MIR ultrashort pulses in all-fibre configuration.
Inducing forward Brillouin scattering (FBS) in non-suspended waveguides is challenging because the required acoustic waves have long wavelengths, typically exceeding the acoustic mode cutoff. Here, we investigate the extent to which an acoustic mode can be confined in non-suspended platforms.
Ring resonators are used to produce injection-seeded, transform-limited pulsed lasers for remote sensing applications. Injection-seeding generally forces uni-directional operation. Our pulsed laser showed both directions were equally seeded. We developed a model that shows <0.1% forward-to-reverse-wave coupling can cause this.
We present a high quality titanium doped sapphire whispering gallery mode (WGM) resonator with record low lasing threshold and high slope efficiency. We also show that amplification is readily achievable.
Experimental results of high amplitude superfluid helium-4 waves and nonlinear phenomena including cnoidal waves, pulse trains and superfluid optomechanical dissipative solitons are presented, agreeing with the recently observed optomechanical dissipative solitons in solid state.
Coupling optical and mechanical modes of microresonators is usually engineered by harnessing their intrinsic nonlinear material response. We propose to harness a new coupling mechanism, in which relies an ensemble of nitrogen vacancies (NVs) induces the effective nonlinearity in diamon.
This talk will outline a new approach to mitigating Brownian coating thermal noise in optical cavities using multiple higher-order gaussian modes. We will present results of a theoretical study into this new sensing scheme and plans for an experimental implementation.
In this work, we aim to experimentally generate supercontinua in the mid-infrared region using the novel architecture of nonlinear amplification. This work is guided by simulations that utilize recently developed numerical models.
We present a numerical and analytical investigation of thermal noise processes in Brillouin experiments. We focus on Brillouin-based memory experiments, and explore the effects of noise on information retrieval for amplitude and phase-based storage with different pulse configurations.
Nuclear architecture has emerged as a key player in DNA search and maintenance of genome integrity. Recently we developed a series of fluorescence microscopy methods to track the movement of molecules around DNA networks within the nuclei of live cells.
Optical metasurfaces are driving the future of miniaturised optical technologies for dynamically reconfigurable optics. Here, I will present our recent advances in reconfigurable optical metasurfaces, including liquid crystal-tunable metasurfaces for phase modulation and electrically-programmable thermo-optical metasurfaces for fast transmission modulation.
We demonstrate fully three-dimensional (3D) active tuning of dielectric metasurfaces integrated with liquid crystals and dynamically controlled by magnetic field. Our approach entails good promise for highly tunable optical metadevices.
A fibre-optic probe is applied to discriminate clinically significant cancers from non-significant & healthy prostate tissue using Raman Spectroscopy. Results show excellent classification between the two tissue types. Our current work aims to unravel new trends within our existing dataset.
This project utilises a miniaturised fibre-optic probe with dual-modality imaging capability that can simultaneously acquire optical coherence tomography and fluorescence in diseased blood vessels of mice injected with fluorescent nanoparticles.
We design and experimentally demonstrate topologically optimised free-form metasurfaces that efficiently convert unpolarised light from LEDs or other common sources to the same pure output polarisation, exceeding the 50% limit of conventional polarisers.
I will present our recent results detailing the design and fabrication of a diamond-based optical voltage imaging platform, and our progress to date in realizing intracellular electrophysiological recordings of mammalian neurons using this new optoelectronic biosensor technology.
Notch filters are band-stop filters used to eliminate unwanted temporal frequencies. Here we demonstrate their capacity for phase contrast imaging of transparent objects enabled by its selective transmission. Applications in unstained biological imaging are anticipated.
Optical levitation of micro and nanoparticles in vacuum offer new approaches for precision measurement and fundamental physics. We will discuss the use of rotational degree of freedom for achieving high Q values, rotational-translational dynamics and sympathetic cooling of microparticles.
Orbital angular momentum modes of light offer excellent prospects for increased bandwidth for spatial division multiplexing for communications with minimal cross talk. Here we discuss the application of metasurfaces to analyse orbital angular momentum modes in free space.
The photoswitching of upconversion nanoparticles was shown under high-energy irradiation. Time-dependent upconversion emission changes were ascribed to lanthanide ion valence state shifts. These findings offer new avenues for optical switching enabled by upconversion nanoparticles.
We harness principles of spatial state tomography to fully characterise an optical beam in space, time, spectrum, and polarisation. Analysis of the output of a vertical-cavity surface-emitting laser illustrates the technique's capabilities.
We present a comprehensive and accessible "explorer's map" showing maximum coupling efficiencies and coupling lengths for dielectric-plasmonic directional couplers as a function of coupling strength and loss. This map is useful for designing any photonic integrated circuit containing plasmonic waveguides.
This paper presents on-the-fly calculation of holographic masks to generate arbitrary spatiotemporal beams. This includes compensating for beam defocusing through the system, allowing for advanced spatiotemporal beams to be generated at large time delays.
We show that photo luminescence rate of silicon-vacancy centres in HTHP diamond is proportional to the sixth power of crystal diameter and consider interactions of photons with centres and kinetics of the crystals growth to explain the results.
Brillouin microscopy has emerged as a non-invasive and label-free technique to map micro-mechanical properties of cells. Here we apply Brillouin microscopy to probe reorganization of F-actin network in respiratory cells treated with Timothy grass pollen protein extracts.
Experimental results on nonreciprocal one-way transmission of light (optical isolation) through ultra-thin dielectric metasurfaces will be reported. Experimental observations of asymmetric parametric generation of images with nonlinear dielectric metasurfaces will be presented.
The elasticity of cells and their environment are critical regulators of cell functions. In this work, we present the development of quantitative micro-elastography to characterise the elasticity of cells and cell spheroids in 3-D biomaterials.
Here we introduce a new technique, time-resolved vector microscopy, that enables us to compose entire movies on a sub-femtosecond time scale and a 10 nm scale of the electric field vectors of surface plasmon polaritons. Depending on the shape and geometrical phase, in combination with the helicity of the excitation beam, topological plasmonic quasiparticles are created: skyrmions, merons, as...
The control and manipulation of quantum systems underpin the development of scalable quantum technologies. Here, we demonstrate the electrical activation and modulation of single photon photoluminescence from quantum emitters in hexagonal boron nitride.
We explore the lifetime and cross-correlation of different sizes NaYbxY1-xF4 (x = 20%, 50% and 100%) nanoparticles. The lifetime reduces when Yb doping concentration increases, The g2(0) of NaYbYF4 is over 10, but only for nanocrystal size below 40 nm.
We present our investigations into the dynamics of levitated rare-earth ions doped nanocrystals using optical tweezers. In particular we will present results on the absolute cooling (i.e. of the motional and internal temperature) of these levitated nanocrystals.
To realise a tunable filter in the long wavelength infrared range, we integrate a metasurface with a micro-electro-mechanical system. Proposed devices will make an impact in remote infrared imaging and sensing.
Ultrathin meta-optics has transformed current photonic design. I will highlight a new 3D meta-optics platform with unleashed height degree of freedom. Design, 3D laser nanoprinting, and applications of various 3D metasurfaces will be discussed.
Bio:
Dr Haoran Ren is an ARC DECRA Fellow at Monash University. He joined Monash University in mid-2022, before that he held a Macquarie...
Semiconductor nanowire arrays have drawn much attention as nanoscale building blocks for integrated photonics, owing to their nanoscale size and unique material properties. In this talk, we present the study of nanowire array based materials and devices for photonic integration.
This presentation will review the emerging science, technology, and applications of photonic chip frequency combs. This new form of laser light has the potential to bring unprecedented precision to almost any application that relies on measurement.
We show in a Kerr microresonator the injection of a second laser, in addition to the pump laser, can facilitate useful spectral expansion of the original soliton comb. Furthermore we experimentally achieve excitation of two simultaneous solitons for spectroscopic applications.
Abstract - We demonstrate enhanced visible sum-frequency generation in doubly resonant GaP metasurfaces. Record conversion efficiency is achieved in the metasurface by the excitation of high-quality factor Q bound state in the continuum (BIC) resonances with non-trivial polarization dependence.
We present a nano-engineered three-dimensional zero-index metamaterial based on Steiner tree networks as a novel topological photonic crystal, featuring a Dirac-like point and a photonic stop-gap to realize low-loss three-dimensional zero-index metamaterial at the wavelength around 1050 nm.
We predict and demonstrate experimentally strong third-harmonic optical signal for broken-symmetry dielectric metasurfaces supporting sharp optical resonances in the near-IR. For chiral asymmetric dielectric metasurfaces we demonstrate experimentally large nonlinear chiroptical response in transmission.
We report the successful thermal fusing of silica single-mode fibers directly to depressed cladding waveguides inscribed in a ZBLAN glass chip using a CO2 laser. This fusing enables complete integration of a fiber and bulk glass waveguides.
Author list:
Marko Perestjuk [1,2], Rémi Armand [2], Alberto Della Torre [2], Milan Sinobad [3], Arnan Mitchell [1], Andreas Boes [1,4], Jean-Michel Hartmann [5], Jean-Marc Fedeli [5], Vincent Reboud [5], Alfredo De Rossi [6], Sylvain Combrié [6], Christelle Monat [2], Christian Grillet [2]
[1] Integrated Photonics and Applications Centre, School of Engineering, RMIT University,...
We theoretically and numerically study the linear propagation of optical pulses in media with high-order dispersion m. We find that for high dispersion orders, all pulses follow a universal evolution depending only on m, eventually evolving to a sinc function.
We show theoretically how to control coherent conversion between a narrowband pump photon and broadband photon pairs in nonlinear optical waveguides by tailoring frequency dispersion for broadband quantum frequency mixing.
Recent studies have shown that solitons dominated by higher order dispersion effects give rise to a large family of possible soliton solutions. We study soliton solutions formed in higher order dispersion systems and uncover families of exact analytic solutions.
In this contribution, we investigate periodic poling of 300nm thin-film X-cut lithium niobate on insulator and study the correlation between applied voltage pulses and domain evolution for efficient second-order nonlinear optical frequency conversion processes.
We numerically and analytically examine solitons arising from a dispersion relation with several peaks of different local curvatures and wavenumbers. Their spectra have multiple separate frequency components whose relative intensities depend on the pulse power.
We consider frequency comb generation in high-finesse magnesium fluoride photonic belt resonators. The confinement to a few spatial modes permits comb excitation free from linear mode interactions. The comb was extended via a dispersive wave, resulting in a broadband spectra.
This talk presents recent progress in hybrid fibers with integrated functional materials such as diamond particles, 2D materials, high-index thin films or silk to create new intrinsic fiber properties for sensing and nonlinear photonics applications.
Short bio:
Heike Ebendorff-Heidepriem received the Ph.D. degree from the University of Jena, Germany, in 1994. Since 2005, she has been with...
Quantum technologies require the interfacing of numerous single photons on a chip. Integration between quantum light sources and photonic devices is crucial for this purpose. Here, we present the integration of hBN quantum emitters into photonic waveguides and photonic cavities.
Femtosecond direct laser writing as a 3D-printing technology has transformed the field of micro-optics. This paper highlights relevant aspects in the design of 3d-printed systems. It presents multiple design examples, ranging across micro-optical imaging-, illumination- and sensing-systems for various applications.
The femtosecond laser direct write technique was used to fabricate mid-infrared waveguide couplers into fused silica and compositionally engineered fluoride glass for the first time. Both results are compared and contrasted to demonstrate novel application regimes.
A high spatial resolution, fast-scanning LiDAR has been developed for dust plume detection. A UV laser source, photomultiplier detection, fast DAQ electronics, IMU and GPS location were assembled on a 355mm Dobsonian telescope for off-grid detection of mining dust plumes.
A newly designed optical glass that could host ultra-low loss optical waveguides written with femtosecond laser is presented. Propagation losses as low as 0.05 dB/cm is reported for 1310 and 1550 nm wavelengths.
We fabricated and examined a range of low phonon energy glasses doped with Er3+ that have the potential to be used as scalable imaging chamber material for upconversion based 3D display.
We present the first observation and characterisation of a photoluminescence colour centre in diamond with a zero phonon line at 1220nm accompanied by prominent phonon side band replicas. The temperature dependence, excitation power and wavelength, and PL lifetime are presented.
Nitrogen-vacancy colour centres in diamonds have unique properties that attract significant attention for various applications. This work explores the deactivation of NV centres in diamond particles embedded in glass for an alternative fast sensor fabrication technique.
Recently, a method to form light-guiding geometries on a chip by depositing a core material without a following etching process has been developed and verified with chalcogenide glass. We introduce the current results showing extremely low loss and their applications.
We analyze optical force and torque on a dielectric cylinder in the field of an evanescent field which has linear momentum, gradients, non-zero spin density. Opmochanical response have resonant nature. Torque resonances strongly depend on the azimuthal number $m$.
