Giant 64 m² passive green laser gyroscope: solution in Earth rotation sensing and geophysical detection.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-06-15 DOI:10.1364/OL.560688

Yuxuan Chen, Yuhong Zhong, Kui Liu, Yawen Liu, Yangsheng Cai, Zhanhao Liu, Lei Zheng, Zhiyuan Wang, Karl Ulrich Schreiber, Zehuang Lu, Jie Zhang, Liangcheng Tu, Jun Luo

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引用次数: 0

Abstract

Large-scale laser gyroscopes with high resolution are widely used in Earth rotation sensing and geophysical detection. We demonstrate a giant 64 m² green laser gyroscope in a passive running mode. By adopting a heterolithic architecture and using a 532 nm solid state laser as the light source, the gyroscope demonstrates a short wavelength, a large-scale factor, and currently the highest Q-factor of 6 × 10¹² among existing gyroscopes. A minimum sensitivity of 7×10^-11rad/s/Hz is achieved, which is the best performance among passive ring gyroscopes (PRGs) to the best of our knowledge. This high sensitivity allows detection of terrestrial secondary microseismic signal at about 0.25 Hz, demonstrating the application value of large-scale PRGs in the field of geophysics. With a theoretical shot-noise limit of 1×10^-12rad/s/Hz, the PRG offers a promising solution for future detection of Earth rotation with extreme sensitivity.

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巨型64m2无源绿色激光陀螺仪：地球自转传感和地球物理探测的解决方案。

大型高分辨率激光陀螺仪在地球自转传感和地球物理探测中有着广泛的应用。我们展示了一个巨大的64平方米的绿色激光陀螺仪在被动运行模式。该陀螺仪采用异质结构，以532 nm的固体激光器为光源，具有波长短、尺寸大的特点，目前在现有陀螺仪中q因子最高，达到6 × 1012。最小灵敏度达到7×10-11rad/s/Hz，据我们所知，这是无源环陀螺仪（prg）中性能最好的。这种高灵敏度可以探测0.25 Hz左右的地面次生微震信号，显示了大尺度PRGs在地球物理领域的应用价值。PRG的理论发射噪声极限为1×10-12rad/s/Hz，为未来以极高的灵敏度探测地球自转提供了一个有希望的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.