Effect of self-phase modulation on the instabilities of quantum-cascade lasers

被引:4
|
作者
Bai, Jing [1 ]
机构
[1] Univ Minnesota, Dept Elect & Comp Engn, Duluth, MN 55812 USA
关键词
quantum-cascade lasers; instability; self-phase modulation; Kerr nonlinearity; MODE-LOCKING; RESONANCE;
D O I
10.1117/1.3518086
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Theoretical analysis of lasing instability in quantum-cascade lasers was carried out. A mid-infrared quantum-cascade laser structure with triple resonance levels was chosen as the prototype of the lasing medium with high Kerr nonlinearity from optical transitions. The self-phase modulation effect induced by Kerr nonlinearity was found to possibly change the unstable frequency domain significantly, i.e., not only broaden the unstable domain but also drive it from single-mode to multi-mode. The instability mechanisms of quantum-cascade lasers include one like the coherent multi-mode Rishen-Nummedal-Graham-Haken instability and the spatial-hole-burning-induced single-mode instability.
引用
收藏
页数:8
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