Title :
Longitudinal holograms in terahertz lasers: Electronic tuning and frequency control
Author :
Khairuzzaman, M. ; Chakraborty, S. ; Marshall, O. ; Hsin, C.-W. ; Beere, H. ; Ritchie, D.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
A longitudinal computer-generated hologram is incorporated into the Fabry-Pérot cavity of a terahertz quantum cascade laser which displays two distinct spectral gain peaks. The combined cavity and hologram feedback mechanisms lead to digitally selective dual-mode emission with a difference frequency which may be electronically tuned from 190 GHz to 267 GHz.
Keywords :
computer-generated holography; frequency control; laser cavity resonators; laser tuning; quantum cascade lasers; submillimetre wave lasers; Fabry-Perot cavity; combined cavity; digitally selective dual-mode emission; electronic tuning; frequency control; hologram feedback; longitudinal computer-generated hologram; terahertz lasers; terahertz quantum cascade laser; two distinct spectral gain peaks; Cavity resonators; Frequency measurement; Milling; Quantum cascade lasers; Resonant frequency; Switches;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380274
