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arXiv physics/0612075physics.optics
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快增益恢复半导体激光器的相干不稳定性

Coherent instabilities in a semiconductor laser with fast gain recovery

C. Y. Wang, L. Diehl, A. Gordon, C. Jirauschek, F. X. Kaertner, A. Belyanin, D. Bour, S. Corzine, G. Hoefler, M. Troccoli, J. Faist, F. Capasso

摘要:

我们报告了在量子级联激光器(QCL)中观察到的相干多模不稳定性,这是由拉比振荡的基本机制驱动的,正如40年前对环形激光器预测的难以捉摸的Risken-Nummedal-Graham-Haken(RNGH)不稳定性一样。所观察到的不稳定性的阈值是显着低于在原来的RNGH不稳定性,我们归因于饱和吸收非线性激光。相干效应,这不能再现的标准激光速率方程,因此可以发挥关键作用,在多模动力学的QCL,并在激光器的快速增益恢复一般。

英文摘要:

We report the observation of a coherent multimode instability in quantum cascade lasers (QCLs), which is driven by the same fundamental mechanism of Rabi oscillations as the elusive Risken-Nummedal-Graham-Haken (RNGH) instability predicted 40 years ago for ring lasers. The threshold of the observed instability is significantly lower than in the original RNGH instability, which we attribute to saturable-absorption nonlinearity in the laser. Coherent effects, which cannot be reproduced by standard laser rate equations, can play therefore a key role in the multimode dynamics of QCLs, and in lasers with fast gain recovery in general.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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