Delay time calculation for dual-wavelength quantum cascade lasers

被引：7
作者：
Hamadou, A. [1 ]
Lamari, S. [1 ]
Thobel, J. -L. [2 ]
机构：
[1] Lab Etud Surfaces & Interfaces Mat Solides, Setif 19000, Algeria
[2] Univ Lille 1, UMR 8520, Inst Elect Microelect & Nanotechnol, F-59652 Villeneuve Dascq, France
来源：
JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 20期
关键词：
BOUND-TO-CONTINUUM; OPERATION;
D O I：
10.1063/1.4829914
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we calculate the turn-on delay (t(th)) and buildup (Delta t) times of a midinfrared quantum cascade laser operating simultaneously on two laser lines having a common upper level. The approach is based on the four-level rate equations model describing the variation of the electron number in the states and the photon number present within the cavity. We obtain simple analytical formulae for the turn-on delay and buildup times that determine the delay times and numerically apply our results to both the single and bimode states of a quantum cascade laser, in addition the effects of current injection on tth and Dt are explored. (C) 2013 AIP Publishing LLC.
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页数：7
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