在2D多层结构中激发-极子激光的高效率
Yuening Fan1, Qiaochu Wan2, Qi Yao2
1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China.
ACS photonics
|July 22, 2024
概括
研究人员在微腔内使用二硫化 (WS2) 层的范德瓦尔斯同结构实现了超低值激光发射. 这一突破表明了高效极子激光器的潜力,其输入功率最小.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
背景情况:
- 刺激子-极子子是光质准粒子,对于先进的光学设备至关重要.
- 微空洞增强是实现高效极子激光的关键.
- 二维材料为量子和光学应用提供了新的平台.
研究的目的:
- 调查范德瓦尔斯同性结构在极子激光应用中的潜力.
- 使用WS2/hBN异构结构实现超低值的激光发射.
- 为了描述制造的极子激光系统的激光效率.
主要方法:
- 范德瓦尔斯同质结构的制造,包括三个WS2层,由六角化 (hBN) 层分开.
- 将WS2/hBN同型结构集成到光学微腔中.
- 对极子辐射的值功率和激光效率的实验测量.
主要成果:
- 来自基于WS2的极子系统的激光发射的观测.
- 达到约59nW/μm2.2的超低值功率.
- 测量了3.82%的激光效率.
结论:
- 范德瓦尔斯的同性结构是有效创建高效的极子激光器.
- 超低值表明了低功耗光学设备的潜力.
- 这项工作为使用基于二维材料的极立子的新型光电子应用开辟了道路.
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