Supersymmetric microring laser arrays
Supersymmetric microring laser arrays
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DOI：
10.1364/prj.7.000363
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发表时间：
2019-03-01
影响因子：
7.6
通讯作者：
Feng, Liang
中科院分区：
文献类型：
--
作者：
Midya, Bikashkali;Zhao, Han;Feng, Liang
在同一芯片上工作的耦合半导体激光器阵列的发射功率的相干组合具有重要的基础和技术意义。通常，阵列超模之间的非线性竞争会导致非相干和光谱展宽，导致时空不稳定和多模发射模式，从而导致较差的光束质量。在这里，通过利用超对称(SUSY)量子力学的概念，我们报告了III-V类半导体微环激光器阵列与其耗散超伙伴之间的战略耦合可以用来将可用于激光作用的超模的数量限制为1。为了极大地简化超伙伴阵列工程，我们提出了一种基于二阶超对称变换的新方法。与具有多模谱的传统激光器阵列相比，观察到超对称激光器阵列能够工作在单(横向)超模。与单一激光器和常规激光阵列相比，超对称激光阵列的峰值输出强度得到了提高，具有较高的效率和较低的激光阈值。我们的实验发现为以可扩展和稳定的方式实现大范围和高功率的光产生铺平了道路。(三)2019中国激光出版社
A coherent combination of emission power from an array of coupled semiconductor lasers operating on the same chip is of fundamental and technological importance. In general, the nonlinear competition among the array supermodes can entail incoherence and spectral broadening, leading to a spatiotemporally unstable and multimode emission pattern and thus poor beam quality. Here, by harnessing notions from supersymmetric (SUSY) quantum mechanics, we report that the strategic coupling between a class III-V semiconductor microring laser array with its dissipative superpartner can be used to limit the number of supermodes available for laser actions to one. We introduce a novel approach based on second-order SUSY transformation in order to drastically simplify the superpartner array engineering. Compared to a conventional laser array, which has a multimode spectrum, a SUSY laser array is observed to be capable of operating in a single (transverse) supermode. Enhancement of the peak output intensity of the SUSY laser array has been demonstrated with high efficiency and lower lasing threshold, compared with a single laser and a conventional laser array. Our experimental findings pave the way towards broad-area and high-power light generation in a scalable and stable fashion. (C) 2019 Chinese Laser Press