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MEMS-metasurface-enabled模式可切换的旋激光器可以在地面上使用

Chuanshuo Wang^1,2, Chao Meng², Xianglong Mei¹

¹State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.

Science advances

|November 20, 2024

概括

研究人员开发了一种新型的光纤激光器,使用基于微电机械系统 (MEMS) 的光学元表面,在高斯和波激光束之间快速,高纯度的模式切换. 这一创新为先进的光子应用提供了紧而高效的解决方案.

科学领域:

光子学和激光技术的发展
微电子机械系统 (MEMS) 是一种微电子机械系统.
光学元表面是指光学元表面.

背景情况:

传统的激光器仅限于静态模式,限制了连贯光生成的灵活性.
当前可切换模式的激光器通常依赖于重和缓慢的光学元件,阻碍了实际应用.
需要紧,快速和多功能激光源,能够进行动态模式控制.

研究的目的:

展示一款能够在不同激光模式之间快速切换的光纤激光系统.
将基于微电子机械系统 (MEMS) 的光学超表面 (OMS) 集成到激光腔中进行模式控制.
为了实现高纯度的高斯式和状激光模式,并具有电调性.

主要方法:

基于内腔微电子机械系统 (MEMS) 的光学元表面 (MEMS-OMS) 的制造.
将MEMS-OMS集成到在~1030nm运行的光纤激光腔中.
电动启动MEMS镜子来控制激光模式输出 (高斯式和状模式).

主要成果:

成功演示了基本高斯 (l=0) 和 (l=1,2,3,5) 激光模式之间的模式切换.
在所有已证明的模式中,实现了高模式纯度超过95%.
显示的快速切换响应时间约为100微秒.

结论:

拟议的内腔MEMS-OMS支持的光纤激光器为生成快速切换的高纯度激光模式提供了源头解决方案.
与传统激光相比,这种技术显著提高了连贯光源的灵活性和多功能性.
潜在的应用包括先进的光学成像,光学,光学加工和智能光子学.

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