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题名:
Opt-mechanical and thermal integrated analysis of a new cryogenic refractometer
作者: Ni, Lei1,2; Ren, Qi-Feng1; Liao, Sheng1; Xing, Ting-Wen1
出版日期: 2012
会议名称: Proceedings of SPIE: Optical System Alignment, Tolerancing, and Verification VI
会议日期: 2012
DOI: 10.1117/12.929170
通讯作者: Ni, L.
中文摘要: Cryogenic optical systems have a good capability and sensitivity in IR detection for its low thermal radiation and background noise. In the past, most of the cryogenic optical systems were reflective. It is very difficult to design refractive cryogenic optical systems because there is lack of cryogenic, infrared refractive index data. In order to make the refractive optical systems designing at cryogenic temperature possible, a cryogenic refractometer is very necessary. In this paper, a new cryogenic refractometer is described. It is obvious that this new refractometer should be integrated designed of structure, thermal and optical analysis. Based on the previous research, the integrated structure, thermal and optical analysis procedure is established. The cooling process of sample prism and acquired the temperature field of the sample prism and sample chamber are simulated. According to the results of FEA, 3 changes might happen during the cooling: the optical surface shape change of sample prism, the rigid-body movements of sample chamber, and the stress birefringence of sample prism. The changed optical surface can be fitted by a 36-terms Zernike polynomials, then the wavefront aberration of cooled sample prism can be estimated. It may cause the stress birefringence in the sample prism during its cooling, so it is very essential to estimate the change of refractive index which is due to the thermal stress. According to the final results of the analysis, the refractometer can be optimized. © 2012 SPIE.
英文摘要: Cryogenic optical systems have a good capability and sensitivity in IR detection for its low thermal radiation and background noise. In the past, most of the cryogenic optical systems were reflective. It is very difficult to design refractive cryogenic optical systems because there is lack of cryogenic, infrared refractive index data. In order to make the refractive optical systems designing at cryogenic temperature possible, a cryogenic refractometer is very necessary. In this paper, a new cryogenic refractometer is described. It is obvious that this new refractometer should be integrated designed of structure, thermal and optical analysis. Based on the previous research, the integrated structure, thermal and optical analysis procedure is established. The cooling process of sample prism and acquired the temperature field of the sample prism and sample chamber are simulated. According to the results of FEA, 3 changes might happen during the cooling: the optical surface shape change of sample prism, the rigid-body movements of sample chamber, and the stress birefringence of sample prism. The changed optical surface can be fitted by a 36-terms Zernike polynomials, then the wavefront aberration of cooled sample prism can be estimated. It may cause the stress birefringence in the sample prism during its cooling, so it is very essential to estimate the change of refractive index which is due to the thermal stress. According to the final results of the analysis, the refractometer can be optimized. © 2012 SPIE.
收录类别: Ei
语种: 英语
卷号: 8491
ISSN号: 0277786X
文章类型: 会议论文
页码: 84910Q
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7471
Appears in Collections:应用光学研究室(二室)_会议论文

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作者单位: 1. Institute of Optics and Electronics, Chinese Academic of Science, Chengdu 610209, China
2. School of Chinese Academic of Science, Beijing 100039, China

Recommended Citation:
Ni, Lei,Ren, Qi-Feng,Liao, Sheng,et al. Opt-mechanical and thermal integrated analysis of a new cryogenic refractometer[C]. 见:Proceedings of SPIE: Optical System Alignment, Tolerancing, and Verification VI. 2012.
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