Thermo-optical Analysis and Correction Method for an Optical Window in Low Temperature and Vacuum

doi:10.3807/COPP.2023.7.2.213

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	Thermo-optical Analysis and Correction Method for an Optical Window in Low Temperature and Vacuum
	R. Wang, R. Ni, Z. Gao, L. Wang and Q. Yuan
	2023
发表期刊	Current Optics and Photonics
ISSN	25087266
卷号	7 期号:2 页码:213-221
摘要	The optical window, as a part of the collimator system, is the connector between the outside light source and the optical system inside a vacuum tank. The temperature and pressure difference between the two sides of the optical window cause not only thermoelastic deformation, but also refractive-index irregularities. To suppress the influence of these two changes on the performance of the collimator sys-tem, thermo-optical analysis is employed. Coefficients that characterize the deformations and refractive-index distributions are derived through finite-element analysis, and then imported into the collimator system using a user-defined surface in ZEMAX. The temperature and pressure difference imposed on the window seriously degrade the system performance of the collimator. A decentered and tilted lens group is designed to correct both field aberrations and the thermal effects of the window. Through lens-interval adjustment of the lens group, the diffraction-limited performance of the collimator can be main-tained with a vacuum level of 10−5 Pa and inside temperature ranging from −100 ℃ to 20 ℃. © 2023 Current Optics and Photonics.
DOI	10.3807/COPP.2023.7.2.213
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收录类别	sci ; ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67954
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	R. Wang, R. Ni, Z. Gao, L. Wang and Q. Yuan. Thermo-optical Analysis and Correction Method for an Optical Window in Low Temperature and Vacuum[J]. Current Optics and Photonics,2023,7(2):213-221.
APA	R. Wang, R. Ni, Z. Gao, L. Wang and Q. Yuan.(2023).Thermo-optical Analysis and Correction Method for an Optical Window in Low Temperature and Vacuum.Current Optics and Photonics,7(2),213-221.
MLA	R. Wang, R. Ni, Z. Gao, L. Wang and Q. Yuan."Thermo-optical Analysis and Correction Method for an Optical Window in Low Temperature and Vacuum".Current Optics and Photonics 7.2(2023):213-221.

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