Petrov Nikolai, Pustovoit Vladislav
Scientific and Technological Centre of Unique Instrumentation of the Russian Academy of Sciences, 15 Butlerova str., 117342 Moscow, Russia.
Sensors (Basel). 2021 Mar 8;21(5):1877. doi: 10.3390/s21051877.
It is highly desirable to have a compact laser interferometer for detecting gravitational waves. Here, a small-sized tabletop laser interferometer with Fabry-Perot resonators consisting of two spatially distributed "mirrors" for detecting gravitational waves is proposed. It is shown that the spectral resolution of 10 cm can be achieved at a distance between mirrors of only 1-3 m. The influence of light absorption in crystals on the limiting resolution of such resonators is also studied. A higher sensitivity of the interferometer to shorter-wave laser radiation is shown. A method for detecting gravitational waves is proposed based on the measurement of the correlation function of the radiation intensities of non-zero-order resonant modes from the two arms of the Mach-Zehnder interferometer.
拥有一台紧凑的用于探测引力波的激光干涉仪是非常理想的。在此，提出了一种小型桌面式激光干涉仪，它带有法布里 - 珀罗谐振器，该谐振器由两个用于探测引力波的空间分布“镜子”组成。结果表明，在镜子间距仅为1 - 3米时，就能实现10厘米的光谱分辨率。还研究了晶体中的光吸收对这种谐振器极限分辨率的影响。结果表明该干涉仪对短波激光辐射具有更高的灵敏度。提出了一种基于测量马赫 - 曾德尔干涉仪两臂非零阶谐振模式辐射强度相关函数来探测引力波的方法。
