温度变化对金属Ag膜反射镜偏振特性的影响研究

蒋丽媛; 刘定权; 马冲; 蔡清元; 高凌山

doi:10.3788/CO.20181104.0604

Volume 11 Issue 4

Jul. 2018

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Article Contents

Chinese Optics > 2018 > 11(4): 604-609.

JIANG Li-yuan, LIU Ding-quan, MA Chong, CAI Qing-yuan, GAO Ling-shan. Influence of temperature variation on polarization characteristics of silver thin film mirror[J]. Chinese Optics, 2018, 11(4): 604-609. doi: 10.3788/CO.20181104.0604

Citation:

JIANG Li-yuan, LIU Ding-quan, MA Chong, CAI Qing-yuan, GAO Ling-shan. Influence of temperature variation on polarization characteristics of silver thin film mirror[J]. Chinese Optics, 2018, 11(4): 604-609. doi: 10.3788/CO.20181104.0604

Citation:

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Influence of temperature variation on polarization characteristics of silver thin film mirror

doi: 10.3788/CO.20181104.0604

JIANG Li-yuan^{1, 2, 3
,},
LIU Ding-quan^{1, 2, 3
,
,},
MA Chong¹,
CAI Qing-yuan^{1, 3},
GAO Ling-shan^{1, 3}

1.
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
2.
School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, China
3.
University of Chinese Academy of Sciences, Beijing 100039, China

Funds:

National Natural Science Foundation of China 61675223

More Information

Corresponding author: LIU Ding-quan, E-mail:dqliu@mail.sitp.ac.cn
Received Date: 09 Feb 2018
Rev Recd Date: 06 Mar 2018
Publish Date: 01 Aug 2018

Abstract

Abstract

Optical payloads in space remote sensing applications impose increasingly high requirements on system polarization control. As a wide spectral reflector, the polarization characteristics of silver thin film mirror usually changes with the ambient temperature. In this paper, silver thin film mirrors with low polarization sensitivity are designed and fabricated. The changes of polarization characteristics and reflection spectrum of the mirrors with room temperature from 25℃ to 150℃ are investigated at 45° and 60° incident angles. The refractive index of silver thin film increases in spectral range of 350 nm to 1 200 nm with the increase of temperature. The phase difference Δ between the s and p light in the reflected light of the silver film mirror is reduced in the wavelength range of 350 to 600 nm, keep stable in 600-650 nm, and increases in the wavelength range of 650 to 1 200 nm. The surface morphology of the silver film and mirror changes, and the surface scattering and absorption increases when temperature reaches 125℃, resulting in a decrease in reflectivity in the 350-900 nm band and even a decrease of about 25% in the wavelength of 350 nm.
- Ag thin film,
- mirrors,
- temperature variation,
- polarization characteristics,
- reflectance

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References(15)

References

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