光注入对量子阱中点(QDWELL)激光动力学的影响

B. Lembrikov, Y. Ben-Ezra
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引用次数: 1

摘要

具有井中点结构的QD激光器(QDWELL激光器)具有发射波长增加和低阈值电流密度的特点。然而,QDWELL激光器在高达7 GHz的脉冲重复频率下表现出高性能。半导体激光器的光注入锁定特性大大提高了激光器的性能。我们首次从理论上研究了光注入对QDWELL激光动力学的影响,同时考虑了量子阱和量子点中的电子和空穴行为。结果表明,最大调制频率增加到30 GHz,电子和空穴动力学同步,振荡发生在强注入水平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optical injection influence on quantum dot-in-a-well (QDWELL) laser dynamics
A QD laser with the dots-in-a-well structure (QDWELL laser) is characterized by the increased emission wavelength and low threshold current density. However, QDWELL laser manifests a high performance for the pulse repetition frequencies up to 7 GHz. The optical injection locking of semiconductor lasers substantially improves their performance. We, for the first time, investigated theoretically the influence of the optical injection on the QDWELL laser dynamics taking into account both the electron and the hole behavior in QW and in QDs. The results show that the maximum modulation frequency increases up to 30 GHz, the electron and hole dynamics is synchronized, and the oscillations occur at the strong injection level.
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