DocumentCode
2693981
Title
Terahertz quantum cascade lasers and video-rate THz imaging
Author
Hu, Qing
Author_Institution
Dept. of EECS, MIT, Cambridge, MA, USA
fYear
2009
fDate
22-24 June 2009
Firstpage
211
Lastpage
211
Abstract
Transitions between subbands in semiconductor quantum wells were suggested as a method to generate long wavelength radiation at customizable frequencies. The recently developed THz quantum-cascade lasers (QCL) hold great promise to bridge the so-called "THz gap" between conventional electronic and photonic devices.Using the high-power THz QCL and a 240x320 focal-plane array camera, we are now able to perform real-time THz imaging at video rate, that is, taking movies in "T-rays".
Keywords
focal planes; quantum cascade lasers; terahertz wave imaging; T-rays; cw laser; focal-plane array camera; frequency 1 THz to 10 THz; high-power THz QCL; metal-metal waveguides; mode confinement; pulsed laser; real-time THz imaging; resonant phonon assisted depopulation; temperature 117 K; terahertz quantum cascade lasers; video-rate THz imaging; Bridges; Cameras; Frequency; Laser transitions; Motion pictures; Optical arrays; Optical imaging; Quantum cascade lasers; Quantum well lasers; Semiconductor laser arrays;
fLanguage
English
Publisher
ieee
Conference_Titel
Device Research Conference, 2009. DRC 2009
Conference_Location
University Park, PA
Print_ISBN
978-1-4244-3528-9
Electronic_ISBN
978-1-4244-3527-2
Type
conf
DOI
10.1109/DRC.2009.5354977
Filename
5354977
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