Title :
Terahertz quantum cascade lasers and video-rate THz imaging
Author_Institution :
Dept. of EECS, MIT, Cambridge, MA, USA
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;
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
DOI :
10.1109/DRC.2009.5354977
