Calibration and stability control for photoelastic modulator using feedback optical path

LI Kewu;WANG Shuang

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    Published By: Journal of Applied Optics

    CN 61-1171/O4

Journal of Applied Optics ›› 2022, Vol. 43 ›› Issue (5) : 935-942. DOI: 10.5768/JAO202243.0503002

Calibration and stability control for photoelastic modulator using feedback optical path

  • LI Kewu1,2,3, WANG Shuang2
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Abstract

In order to achieve the accurate calibration and long-time stable operation for photoelastic modulator (PEM), a calibration and control scheme of phase retardation amplitude which using feedback optical path was established, and the spatial distribution of phase retardation amplitude on the PEM optical aperture was theoretically calculated and simulated. An integrated calibration feedback optical path was designed deviating from the center of PEM. Combined with the phase retardation amplitude calibration method using the ratio of harmonic terms, the digital phase lock technology was used to simultaneously extract the harmonic terms of the modulated light intensity signals from the feedback optical path, and then the phase retardation amplitude of PEM was solved. According to the proposed scheme, the PEM physical object was processed, and the calibration experiment and stability control experiment were both carried out. The experimental results show that, the relative deviation between the calibration value and measured value of phase retardation amplitude of PEM center does not exceed 0.22%. With the use of feedback optical path to control the PEM about 100 minutes, the standard deviation of PEM phase retardation amplitude is 0.001 8 rad and the maximum deviation is lower than 0.42%, which realizes the accurate and real-time calibration of PEM phase retardation amplitude and the long-time stable control of PEM is also verified.

Key words

photoelastic modulator / phase retardation amplitude / accurate calibration / stable control

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LI Kewu, WANG Shuang. Calibration and stability control for photoelastic modulator using feedback optical path. Journal of Applied Optics. 2022, 43(5): 935-942 https://doi.org/10.5768/JAO202243.0503002

References

张瑞, 王志斌, 李晓, 等. 单弹光调制傅里叶偏振光谱测量研究[J]. 应用光学,2014,35(1):95-99.
李克武, 王志斌, 陈友华, 等. 基于弹光调制的高灵敏旋光测量[J]. 物理学报,2015,64(18):293-298.
李克武, 王黎明, 王志斌, 等. 弹光和电光级联的组合相位调制型椭偏测量术[J]. 光学精密工程,2016,24(4):690-697.
王爽, 王志斌, 李晓, 等. 弹光调制测晶体电光系数的数字锁相实现[J]. 光子学报,2017,46(10):164-169.
张敏娟, 刘文敬, 王志斌, 等. 弹光调制器的频率漂移特性及其傅里叶变换光谱的稳定性研究[J]. 红外与激光工程,2020,49(10):219-226.
WANG S, HAN X, WANG Y N, et al. Dispersion of the retardation of a photoelastic modulator[J]. Applied Sciences,2019,9(2):341.
ZHANG Rui, WANG Zhibin, LI Xiao, et al. Spectropolarimeter measurement based on photoelastic-modulator and Fourier transform[J]. Journal of Applied Optics,2014,35(1):95-99.
LI K W, ZHANG R, JING N, et al. Fast and full range measurements of ellipsometric parameters using a 45° dual-drive symmetric photoelastic modulator[J]. Optics Express,2017,25(5):5725-5733.
WANG B L, LIST J. Basic optical properties of the photoelastic modulator part I: useful aperture and acceptance angle[C]//Proceedings of Polarization Science and Remote Sensing II. San Diego: SPIE, 2005, 5888: 436-443.
LI Kewu, WANG Zhibin, CHEN Youhua, et al. High sensitive measurement of optical rotation based on photo-elastic modulation[J]. Acta Physica Sinica,2015,64(18):293-298.
PHAL Y, YEH K, BHARGAVA R. Concurrent vibrational circular dichroism measurements with infrared spectroscopic imaging[J]. Analy

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