Selective Pump Focusing on Individual Laser Modes in Microcavities,ACS Photonics

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Selective Pump Focusing on Individual Laser Modes in Microcavities
ACS Photonics ( IF 6.5 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1021/acsphotonics.8b00648
Jae-Hyuck Choi ₁ , Sehwan Chang ₁ , Kyoung-Ho Kim ₁ , Wonjun Choi _{1,

2} , Soon-Jae Lee ₁ , Jung Min Lee ₁ , Min-Soo Hwang ₁ , Jungkil Kim ₁ , Seungwon Jeong _{1,

2} , Min-Kyo Seo ₃ , Wonshik Choi _{1,

2} , Hong-Gyu Park _{1,

4}

Affiliation

We demonstrate selective pump focusing for highly isolated single-mode lasers in microdisk and microring cavities, and achieve lasing action from a microdisk cavity underneath a scattering medium. The spatial profile of the pumping light evolves by an iterative feedback process and is optimized to maximize the field overlap with a selected cavity mode. The high order of mode selectivity and high resolving power are obtained in a multimode cavity in the presence of significant modal overlaps. As a result of the adaptive optical pumping, we successfully achieve the efficient energy transfer to a microdisk underneath a random scattering medium and observe lasing action through the scattering medium. We believe that our selective pumping procedure will pave the way for the development of low-threshold, single-mode nanolasers embedded in various materials.

中文翻译：

选择性泵聚焦于微腔中的单个激光模式

我们演示了选择性泵浦聚焦，用于微盘和微环腔中的高度隔离的单模激光器，并从散射介质下方的微盘腔中实现激光作用。抽运光的空间轮廓是通过迭代反馈过程演变而来的，并经过优化以使选定的腔模式下的场重叠最大化。在存在明显的模态重叠的情况下，在多模腔中可获得高阶模选择性和高分辨能力。自适应光学泵浦的结果是，我们成功地实现了将能量有效地转移到随机散射介质下的微型磁盘，并观察了通过散射介质的激光作用。我们相信，我们的选择性泵送程序将为低阈值的发展铺平道路，

更新日期：2018-06-20

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