电气的紧型拓散装激光器是由连续体中带反向束状态驱动的
Song Han1, Jieyuan Cui2, Yunda Chua2
1Centre for Optoelectronics and Biophotonics, School of Electrical and Electronic Engineering & The Photonics Institute, Nanyang Technological University, Singapore, Singapore. song.han@zju.edu.cn.
Light, science & applications
|June 12, 2023
概括
我们展示了一种新型的拓激光在太赫兹范围内运行. 这种拓式批量量子级联激光器 (QCL) 使用连续性的束状态 (BIC) 进行强大的,紧的和单模激光.
科学领域:
- 拓光子学和量子级联激光器 (QCL).
- 在拓光子系统中探索散带物理.
背景情况:
- 拓光子学提供了强大的功能,特别是在拓激光器中.
- 研究主要集中在拓边缘状态上,忽视了散带现象.
研究的目的:
- 为了演示在太赫兹 (THz) 频率范围内运行的电拓散装激光器.
- 研究在拓激光器中连续体 (BIC) 中的散带和受束状态的作用.
主要方法:
- 基于拓散装原理的小型THz QCL的制造和表征.
- 对波段反转,平面内反射和BIC特征的分析.
- 对激光发射模式和远场辐射模式的实验观测.
主要成果:
- 成功演示了在THz范围内的电拓散装QCL.
- 观察激光模式在飞机内和飞机外的紧密封闭.
- 实现了单模式激光,侧模式抑制比 (SMSR) 为~20dB.
- 观测到圆柱形向量束辐射,证实了拓大批量BIC激光操作.
结论:
- 这项工作突出了拓散量状态和BIC在先进激光设计中的潜力.
- 微型的单模THz QCL适用于成像,传感和通信领域的应用.
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