Title :
Ultrafast gain dynamics in a quantum cascade laser
Author :
Choi, Hyunyong ; Wu, Zong-Kwei ; Norris, Theodore B. ; Gresch, Tobias ; Giovannini, Marcella ; Faist, Jérôme ; Diehl, Laurent ; Capasso, Federico
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI
Abstract :
Time-resolved mid-infrared pump-probe measurements in a quantum cascade laser operating above threshold reveal gain recovery dynamics to be two-fold: relaxation within a stage on a sub-picosecond scale and transport between stages on a picosecond scale.
Keywords :
high-speed optical techniques; infrared sources; quantum cascade lasers; gain recovery dynamics; midinfrared measurements; pump-probe measurements; quantum cascade laser; time-resolved measurements; ultrafast gain dynamics; Laser excitation; Nonlinear optics; Optical pumping; Probes; Pulse amplifiers; Quantum cascade lasers; Stimulated emission; Temperature measurement; Tunneling; Ultrafast optics; (140.5960) Semiconductor lasers; (320.7100) Ultrafast measurement;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4628692
