Abstract Light, sound, and microwave are important tools for many interdisciplinary applications in a multi-physical environment, and they usually are inefficient to be detected simultaneously in the same physical platform. However, at the microscopic scale, these waves can unexpectedly interact with the same microstructure through resonant enhancement, making it a unique hybrid micro-system for new applications across multiple physical channels. Here we experimentally demonstrate an optomechanical microdevice based on Brillouin lasing operation in an optical microcavity as a sensitive unit to sense external light, sound, and microwave signals in the same platform. These waves can induce modulations to the microcavity Brillouin laser (MBL) in a resonance-enhanced manner through either the pressure forces including radiation pressure force or thermal absorption, allowing several novel applications such as broadband non-photovoltaic detection of light, sound-light wave mixing, and deep-subwavelength microwave imaging. These results pave the way towards on-chip integrable optomechanical solutions for sensing, free-space secure communication, and microwave imaging.

中文翻译：

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微腔布里渊激光器中光、声和微波的多物理传感

摘要 光、声和微波是多物理环境中许多跨学科应用的重要工具，在同一物理平台上同时检测通常效率低下。然而，在微观尺度上，这些波可以通过共振增强意外地与相同的微观结构相互作用，使其成为跨多个物理通道的新应用的独特混合微系统。在这里，我们通过实验证明了一种基于布里渊激光操作的光机微器件，在光学微腔中作为敏感单元在同一平台上感知外部光、声音和微波信号。这些波可以通过包括辐射压力或热吸收在内的压力以共振增强的方式对微腔布里渊激光器 (MBL) 进行调制，从而实现多种新应用，例如宽带非光伏检测光、声光波混合和深亚波长微波成像。这些结果为用于传感、自由空间安全通信和微波成像的片上可集成光机械解决方案铺平了道路。