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Jun 17 – 21, 2024
CERN
Europe/Zurich timezone

TPA-Based Characterisation of Solid State Sensors Using a Tunable Femtosecond Pulsed Laser

Jun 21, 2024, 9:20 AM
20m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
Show room on map
WG5 - Characterization techniques - facilities WG5 - Characterization techniques, facilities

Speaker

Enoch Ejopu (University of Manchester (GB))

Description

The Two-Photon Absorption (TPA) process provides an excellent method for the characterization of solid-state sensors due to its intrinsic 3D resolution for the excitation of electron-hole pairs when compared to the single-photon process. A Light Conversion ORPHEUS optical parametric amplifier with tuneable output wavelength across 310-16000 nm is used as the excitation source for order of 150 femtoseconds laser pulses. This broad range offers a unique opportunity to characterize devices with TPA for a wide range of solid-state devices including silicon and diamond. In addition, this set-up “developed at The Photon Science Institute (Manchester)” is also used for timing measurements. The results of the timing measurements, and energy, voltage, depth and knife-edge scans, followed by plans for improvements will be presented. First results from simulations (KDetSim) compared with experimental data will also be presented.

Type of presentation (in-person/online) in-person presentation
Type of presentation (scientific results or project proposal) Presentation on scientific results

Primary authors

Alexander Oh (University of Manchester (GB)) Enoch Ejopu (University of Manchester (GB)) Mr Huazhen Li (University of Manchester) Marco Gersabeck (University of Manchester (GB)) Oscar Augusto De Aguiar Francisco (University of Manchester (GB))

Presentation materials