In recent years, the need for a high-power laser has been of great interest for different applications, including direct-laser processing, light detection, medicine, and lighting. However, high-power lasers with high intensities give rise to fundamental problems for optical detectors and imaging systems with low threshold damage, which still need reliable solutions. Here we report and numerically demonstrate a hybrid system that synergistically combines a broadband OPL with a transmittance difference between on-state (70°C) and off-state (25°C) about 62.5%, and a diffraction-limited broadband metalens from 1534 to 1664 nm. Such a metalens power limiter could be used in any system requiring an intermediate focal plane in the optical path to the detector from damage by exposure to high-intensity lasers.

中文翻译：

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衍射极限宽带光中继功率限制器

近年来，对于高功率激光器的需求已引起不同应用的广泛兴趣，包括直接激光加工，光检测，药物和照明。然而，高强度的高功率激光器对于具有低阈值损坏的光学检测器和成像系统提出了基本问题，这仍然需要可靠的解决方案。在这里，我们进行报告并以数值方式演示了一种混合系统，该系统将宽带OPL与开态（70°C）和关态（25°C）之间约62.5％的透射率差相结合，并结合了1534年的衍射极限宽带金属元素到1664 nm 这种金属功率限制器可用于任何需要在通向检测器的光路中具有中间焦平面以免因暴露于高强度激光而造成损坏的系统中。