Multimode regimes and instabilities in quantum-cascade lasers

被引：0
|
作者：
Kartner, Franz X. [1 ]
Gordon, Ariel [1 ]
机构：
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
来源：
NOVEL IN-PLANE SEMICONDUCTOR LASERS VII | 2008年 / 6909卷
关键词：
quantum cascade laser; Risken-Nummedal-Graham-Haken; coherent instability; mode-locking;
D O I：
10.1117/12.768142
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A theoretical study of multimode operation regimes in quantum cascade lasers (QCLs) is presented. It is shown that the fast gain recovery of QCLs promotes two multimode regimes: One is spatial hole burning (SHB), and the other one is related to the Risken-Nummedal-Graham-Haken (RNGH) instability predicted in the sixties. A model that can account for coherent phenomena, a saturable absorber and SHB is developed and studied in detail both analytically and numerically.
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页数：12
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