Compact diode-laser-pumped THz source based on a novel photomixer device.
Lead Research Organisation:
University of Dundee
Department Name: Electronic Engineering and Physics
Abstract
Within this project we will carry out theoretical and experimental studies of novel types of compact THz sources where semiconductor laser diodes will be combined with a novel dipole/spiral and waveguide photoconductor devices. Specifically, we propose to design, fabricate and assess the performance of the material systems of amorphous/nanocrystalline silicon and quantum-dot semiconductors as materials having short electron-hole photocarrier lifetimes and high photosensitivity at 780-1300nm. In addition to fully characterising and optimising the dual- and multi-longitudinal modes diode lasers we will evaluate the performance of these lasers in the optical pumping of the dipole/spiral and waveguided antennae for obtaining THz power levels in the >100 microwatts range with optimised beam characteristics. The overall objective of this work is to produce a diode-laser-driven, ultra-compact THz source having some potential for additional functionality through its frequency tunability.
Publications
(Turchinovich, D
(2011)
THz Electro-absorption Effect in Quantum Dots
Fedorova K
(2017)
Compact All-Quantum-Dot-Based Tunable THz Laser Source
in IEEE Journal of Selected Topics in Quantum Electronics
Gorodetsky
Optical pump-terahertz probe study of carrier relaxation processes in InAs:GaAs quantum dot terahertz materials
in App Phys Lett
Gorodetsky A
(2018)
Photoelectric Properties of InAs/GaAs Quantum Dot Photoconductive Antenna Wafers
in IEEE Journal of Selected Topics in Quantum Electronics
Gorodetsky A.
(2014)
Quantum Dot-Based Terahertz Photoconductive Antenna
Gorodetsky, A
(2014)
Quantum Dot-Based Terahertz Photoconductive Antennas
Hoffmann M
(2010)
Terahertz electro-absorption effect enabling femtosecond all-optical switching in semiconductor quantum dots
in Applied Physics Letters
Kruczek T
(2012)
Continuous wave terahertz radiation from an InAs/GaAs quantum-dot photomixer device
in Applied Physics Letters
Leyman R
(2011)
Multimodal spectral control of a quantum-dot diode laser for THz difference frequency generation
in Applied Physics Letters
Leyman R
(2016)
Quantum dot materials for terahertz generation applications
in Laser & Photonics Reviews
Leyman R
(2012)
Progress in Compact Room Temperature THz Radiation Sources
in Resent patent on signal processing
Rafailov E.U.
(2013)
All quantum-dot based compact THz sources
| Description | Single frequency blue laser diodes have been developed. |
| Exploitation Route | Newly developed devices can used also in biomedical application. |
| Sectors | Aerospace Defence and Marine Agriculture Food and Drink Chemicals Digital/Communication/Information Technologies (including Software) Healthcare Manufacturing including Industrial Biotechology Pharmaceuticals and Medical Biotechnology |
| Description | NEXPRESSO |
| Amount | € 30,000 (EUR) |
| Organisation | European Commission |
| Sector | Public |
| Country | Belgium |
| Start | 02/2013 |
| End | 01/2014 |
| Description | TERA |
| Amount | € 800,000 (EUR) |
| Organisation | European Commission |
| Sector | Public |
| Country | Belgium |
| Start | 03/2012 |
| End | 03/2016 |