Comparisons between an on-axis three-mirror anastigmat telescope and an off-axis one: Polarization aberrations

doi:10.1364/AO.432016

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	Comparisons between an on-axis three-mirror anastigmat telescope and an off-axis one: Polarization aberrations
	J. Luo; C. You; X. He and X. Zhang
	2021
发表期刊	Applied Optics
ISSN	1559128X
卷号	60 期号:22 页码:6438-6447
摘要	Due to the ability to achieve a wide-diffraction-limited field of view, three-mirror anastigmat (TMA) telescopes are widely used in many applications that demand high imaging quality and detection accuracy, in which polarization aberrations play increasingly important roles. In this paper, polarization properties of on-axis elements and those of off-axis elements are analyzed and compared via polarization aberration theory. Then, an on-axisTMA(OTMA) telescope and an off-axis TMA (FTMA) telescope are designed and optimized to be diffraction-limited systems in parallel. Their constructional parameters and first-order parameters are set to be identical. Via polarization ray tracing, polarization aberrations of the 2 telescopes are obtained and compared in terms of diattenuation map, retardance map, Jones pupil, Pauli pupil, and amplitude response matrix. Results demonstrate that polarization aberrations are closely related to the structural features of mirrors and telescopes. The diattenuation and retardance maps of power mirrors in the OTMA telescope are rotationally symmetric, while those in the FTMA telescope are not. AMaltese cross appears in off-diagonal elements of the Jones pupil of the OTMA telescope and disappears in the FTMA telescope. Amplitude response matrices of polarization crosstalk components in the OTMA telescope are with a four-peak structure, while those in the FTMA telescope are with a two-peak structure. After quantitative comparisons, it is found that diattenuation in the OTMA telescope is smaller than that in the FTMA telescope as well as in the cases of retardance and polarization crosstalk. There are also similarities between the 2 TMA telescopes. Polarization aberrations of secondary mirrors (SM) are greater than those of both primary mirrors (PM) and tertiary mirrors (TM). What is more, polarization aberrations of TM are so small that they can be ignored safely. The numerical sum of Pauli coefficients of PM, SM, andTMis nearly identical to the cumulative Pauli coefficients. Hence, theTMAtelescopes can be treated asweak polarization elements. This work compares polarization aberration performance of on- and off-axisTMAtelescopes and can provide important references for designing and optimizing telescopes in which polarization aberrations matter. 2021 Optical Society of America.
DOI	10.1364/AO.432016
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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/181722/65105
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	J. Luo,C. You,X. He and X. Zhang. Comparisons between an on-axis three-mirror anastigmat telescope and an off-axis one: Polarization aberrations[J]. Applied Optics,2021,60(22):6438-6447.
APA	J. Luo,C. You,&X. He and X. Zhang.(2021).Comparisons between an on-axis three-mirror anastigmat telescope and an off-axis one: Polarization aberrations.Applied Optics,60(22),6438-6447.
MLA	J. Luo,et al."Comparisons between an on-axis three-mirror anastigmat telescope and an off-axis one: Polarization aberrations".Applied Optics 60.22(2021):6438-6447.

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