Somporn Buaprathoom
(Mahidol Wittayanusorn School, 364 Moo 5 Salaya, Phutthamonthon, Nakorn Pathom, Thailand 73170)
21/05/2015, 08:00
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
Light scattering is a non-invasive technique to characterize small particles, such as microorganism and powder etc. Therefore, it is wildly used in many fields, for instance, pharmaceutical technology and microorganism detection. There are many authors theoretically calculate the scattered light from a particle for fitting to the experimental measurement to determine the particle...
Rattanachai Kowong
(Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, Lasers and Optics Research Group (LANDOS), Science and Technology Institute, King Mongkut's University of Technology North Bangkok)
21/05/2015, 08:15
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
We propose a new approach, the Arc Discharge Drawing (ADD) technique, to
fabricate silica fibers with diameters less than the wavelength of commercial
available lasers. With this single-step technique, silica wires with diameters
as small as 50 nm were demonstrated. This technique would provide an attractive
alternative to current approaches to fabricate the silica nanowires. For...
Mr
Phumipat Kittiboonanan
(Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok 10800 Thailand)
21/05/2015, 08:30
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
In this paper, we present the creation of a new class of an optical surface measurement based on laser scattering principle. This technique is aimed to serve as a non-destructive testing tool for laser removal of graffiti. The laser scattering system consists of a weak HeNe laser beam that is split into two arms, the reference arm and the sample arm. The reference arm serves as the unaffected...
Mr
Ratchanikorn Koomramyakul
(Division of Physics, Mahidol Wittayanusorn School, Phutthamonthon, Nakhon Pathom 73170, Thailand)
21/05/2015, 08:45
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
The study of quantum optics in Mahidol Wittayanusorn School has established for four years. The latest study was conducted by attenuating blue laser and using the down-conversion crystal. The result of that study was a degree of second-order coherence = 0.412 ± 0.014 which violating the classical inequality. However that is not completely confirmed that single photon exists. The solid...
Mr
Paradai Phanpanich
(Department of Physics, Faculty of science, Mahidol university, 272 Rama 6 Road Ratchathewi Bangkok, 10400)
21/05/2015, 09:00
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
Fiber optic displacement sensor (FODS) is demonstrated to probe the linear thermal expansion of materials. The device employs an intensity modulation technique which is based on comparing the transmitted light intensity against that of the launch light to provide information on the displacement between the probe and the target. Steel and Aluminum were used as the target. From the thermal...
