Study of transmittance fluctuation of Glan-Foucault prisms

XU Zhaopeng; ZHU Huafeng; LIU Xin; WANG Tianyang; LIU Pei; LI Chao

doi:10.7510/jgjs.issn.1001-3806.2015.03.027

With continuous change of the incidence angle, the transmittance of a Glan-Foucault prism fluctuates a lot. In order to suppress such fluctuation, experiments were carried out for measurement of the transmittance of the Glan-Foucault prism based on a polarized light experimental system. The transmittance was simulated under the assumption that there was multiple beam interference between the prism air gaps. Simulation results and experimental results matched very well. The relative quantitative reason of the transmittance fluctuating with the incidence angle was put forward for the first time. Two methods were proposed to inhibit the fluctuation. The results showed that the reason of fluctuation is the strengthened or weakened multiple beam interference induced by the change of path difference of interference beam between the air gap with the rotation of the stepping motor with the prism as depolarizer. The fluctuations are stronger just because the transmitted beam for the Glan-Foucault prisms is s component on the incident plane which has greater reflectance. The study is helpful for suppressing the transmittance fluctuation of a Glan-Foucault prism.

Study of transmittance fluctuation of Glan-Foucault prisms

Corresponding author: ZHU Huafeng, zhuhf@upc.edu.cn;

1. College of Science, China University of Petroleum(Huadong), Qingdao 266580, China

Received Date: 2014-03-20

Accepted Date: 2014-06-30

Available Online: 2015-05-25

Abstract: With continuous change of the incidence angle, the transmittance of a Glan-Foucault prism fluctuates a lot. In order to suppress such fluctuation, experiments were carried out for measurement of the transmittance of the Glan-Foucault prism based on a polarized light experimental system. The transmittance was simulated under the assumption that there was multiple beam interference between the prism air gaps. Simulation results and experimental results matched very well. The relative quantitative reason of the transmittance fluctuating with the incidence angle was put forward for the first time. Two methods were proposed to inhibit the fluctuation. The results showed that the reason of fluctuation is the strengthened or weakened multiple beam interference induced by the change of path difference of interference beam between the air gap with the rotation of the stepping motor with the prism as depolarizer. The fluctuations are stronger just because the transmitted beam for the Glan-Foucault prisms is s component on the incident plane which has greater reflectance. The study is helpful for suppressing the transmittance fluctuation of a Glan-Foucault prism.

HTML

Reference (14)

[1]	WANG T,WU F Q,MA L L. Effect of air-gap polarizing prism on distribution of light intensity of single-mode gaussian beam[J]. Acta Optica Sinica,2006,26(9):1335-1339(in Chinese).
[2]	ZUBOV V A. Polarization analyzes operating in a wide spectral range[J].Journal of Russian Laser Research,1997,18(1):17-38.
[3]	WANG T,WU F Q,MA L L. Transmitting characteristics of deferent girding radios single mode Gaussian beam[J].Journal of Qufu Normal University (Nature Science Edition), 2006,32(4):72-74(in Chinese).
[4]	LI H X, FAN J Y, SU F F, et al. Suppressing the disturbance in the transmission of Glan-Thompson-type prism polarizers[J].Chinese Optics Letters,2010,8(4):428-430.
[5]	MENG X Sh,WANG T, WU F Q, et al. The measurement of the Glan-Foucault prisms air-gap. [M]. Laser Technology,2010,34(3):413-416(in Chinese).
[6]	ZHU H F, SONG L K, CHEN J W, et al. Modified formula of Malus'law for Glan-Taylor polarizing prisms. Optics Communication,2004, 245(1/6): 1-9.
[7]	FAN J Y, LI H X, WU F Q.A study on transmitted intensity of disturbance for air-spaced Glan-type polarizing prisms[J].Optics Communication,2003, 223(1):11-16.
[8]	LI H X,WU F Q,FAN J Y. Thermodynamic effect on transmitted intensity perturbance of air-gaped Glan-type polarizing prisms [J].Acta Physica Sinica, 2003,52(8): 2081-2085(in Chinese).
[9]	WANG C M,SONG L K,WANG L,et al. Effect of incident angles on splitting ratio of Glan polarizing splitting prisms[J]. Laser Technology,2008,32(2):102-104(in Chinese).
[10]	LI J Zh, LI G H. Spectrophotometer polarization spectrum measurement [J].Spectroscopy and Spectral Analysis, 1994,14(5):121-126.
[11]	LI J Zh. Handbook of optics[M].Xi'an: Technology and Science Press of Shanxi,1986:497-521(in Chinese).
[12]	BENNETT J M. Handbook of optics[M].New York,USA: McGraw-Hill,1995:3.1-3.19.
[13]	ZHU J K, WU F Q, REN Sh F. Forward and backward splitting angles of Wollaston prisms and their symmetry[J]. Laser Technology, 2012, 36(5): 636-638(in Chinese).
[14]	ZHU H F, LI D L, SONG L K, et al. Precise analysis of formation and suppression of intensity transmittance fluctuations of glan-taylor prisms.Laser Optoelectronics Progress,2013(5):052302(in Chinese).

Study of transmittance fluctuation of Glan-Foucault prisms

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views