AI 中文总结
针对光学参考腔薄膜涂层布朗噪声限制精密计量的问题，研究人员研发出基于全内反射的无涂层单片熔融石英谐振器，模式体积达现有同类最大，可用于激光稳频及精密计量，为突破频率稳定极限提供新路径。
AI 中文摘要
光学参考腔的薄膜反射镜涂层中的布朗噪声是精密计量领域（包括引力波探测器和光学原子钟）的一项根本性限制。我们展示了一种单片熔融石英谐振器，它通过全内反射（TIR）工作，无需使用薄膜涂层，实现了1225的精细度和50 mm³的光学模式体积。据我们所知，这是所有已报道的无涂层单片谐振器中最大的模式体积，可与最先进的参考腔相媲美。我们使用该腔对Nd:YAG激光器进行频率稳定，并通过将其工作在被动环形陀螺仪构型下，展示了其在精密计量中的应用。该平台规避了传统参考腔的主要噪声源，并为研发可超越当前频率稳定极限的低温硅TIR谐振器提供了路径。
英文摘要
Brownian noise in the thin-film mirror coatings of optical reference cavities is a fundamental limitation in precision metrology, including gravitational-wave detectors and optical atomic clocks. We demonstrate a monolithic fused silica resonator that eliminates the use of thin-film coatings by operating via total internal reflection (TIR), achieving a finesse of 1225 and an optical mode volume of \qty{50}{mm^3}. To our knowledge, this is the largest mode volume reported for any coating-free monolithic resonator, comparable to state-of-the-art reference cavities. We use the cavity to frequency-stabilize an Nd:YAG laser, and demonstrate its application to precision metrology by operating it in a passive ring gyroscope configuration. This platform circumvents the dominant noise source of conventional reference cavities and provides a pathway toward cryogenic silicon TIR resonators that could surpass current frequency stabilization limits.
Comments13 pages, 10 figures
