Title :
Gain without Inversion: An Approach for THz Quantum Cascade Laser?
Author :
Waldmueller, Inès ; Chow, Weng W. ; Gin, Aaron ; Young, Erik W. ; Wanke, Michael C.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM
Abstract :
Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the possibilities of optically driven QCLs. We show that in a four level cascaded-emission scheme, quantum coherence effects can yield gain without inversion
Keywords :
Maxwell equations; laser beams; laser transitions; light coherence; quantum cascade lasers; submillimetre wave lasers; Maxwell-semiconductor Bloch equations; THz quantum cascade laser; four level cascaded-emission scheme; gain without inversion; microscopic theory; optically driven QCL; quantum coherence effects; Laser modes; Laser transitions; Maxwell equations; Nonlinear optics; Optical pumping; Optical scattering; Power lasers; Quantum cascade lasers; Semiconductor lasers; Temperature dependence;
Conference_Titel :
Semiconductor Laser Conference, 2006. Conference Digest. 2006 IEEE 20th International
Conference_Location :
Kohala Coast, HI
Print_ISBN :
0-7803-9560-3
DOI :
10.1109/ISLC.2006.1708076
