2021/01/04 by Jing-Hui Huang, Xue-Ying Duan, Xiangyun Hu +1
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Angular velocity #Astronomical interferometer #Classical mechanics #Geophysics and Sensor Technology #Intensity interferometer #Interferometry #Laser #Limit (mathematics) #Mechanical and Optical Resonators #Optical path #Optical path length #Optical rotation #Optics #Path length #Physics #Ring laser gyroscope #Rotation (mathematics) #SIGNAL (programming language) #Sagnac effect #quant-ph
paper · pdf · doi:10.1140/epjd/s10053-021-00117-4
published as Eur. Phys. J. D 75, 114 (2021) · arXiv admin note: text overlap with arXiv:1203.0827 by other authors
arxiv created 2021/01/04 · openalex publication_date 2021/03/01 · arxiv updated 2021/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the amplification of rotation velocity with the Sagnac interferometer based on the concept of weak-value amplification. By using a different scheme to perform the Sagnac interferometer with the probe in momentum space, we have demonstrated the new weak measure protocol to detect the small rotation velocity by amplifying the phase shift of the Sagnac effect. At the given the maximum incident intensity of the initial spectrum, the detection limit of the intensity of the spectrometer and the accuracy of angular velocity measurement, we can theoretical give the appropriate potselection and the minimum of optical path area before experiment. In addition, we put forward a new optical design to increase the optical path area and decrease the size of the interferometer to overcome the limit of instrument size. Finally, our modified Sagnac's interferometer based on weak measurement is innovative and efficient probing the small rotation velocity signal.