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Direct wavefront sensing from extended objects: a general sensor
Li CW(李常伟); Lu YT(陆彦婷); Zhang SJ(张思炯)
2021-07
Source PublicationOptical Engineering
Volume60Issue:7Pages:073107-1~073107-17
Abstract

Wavefront sensing from an extended object is a challenging task since the phase to be sensed is disturbed by the one generated from the structure of the extended object. Toaddress this problem, a general wavefront sensor is proposed. The configuration of the pro-posed sensor consists of a field lens, a collimating lens, a lenslet array, and a camera. The field lens, the first element of this sensor, ensures that each lenslet collects the same information of the extended object, which is a basis for the reconstruction of the distorted wavefront from the extended object using the proposed sensor. The fundamental strategy of the sensor is converting the scenario of wavefront sensing from an extended object into the traditional one from a point source by eliminating the Fourier spatial spectrum of the extended object in the frequency domain. As a result, the distorted wavefront can be reconstructed using the algorithm of the Shack–Hartmann wavefront sensor. Numerical simulations and experiments both verify the feasibility and accuracy of the proposed sensor for direct wavefront sensing from any types of extended objects. 

Keywordwavefront sensing extended objects Fourier spatial spectrum
Subject Area天文技术与方法
Document Type期刊论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/1954
Collection中国科学院南京天文光学技术研究所_期刊论文
中科院天文光学技术重点实验室_期刊论文
中国科学院南京天文光学技术研究所
Affiliation南京天文光学技术研究所
Recommended Citation
GB/T 7714
Li CW,Lu YT,Zhang SJ. Direct wavefront sensing from extended objects: a general sensor[J]. Optical Engineering,2021,60(7):073107-1~073107-17.
APA Li CW,Lu YT,&Zhang SJ.(2021).Direct wavefront sensing from extended objects: a general sensor.Optical Engineering,60(7),073107-1~073107-17.
MLA Li CW,et al."Direct wavefront sensing from extended objects: a general sensor".Optical Engineering 60.7(2021):073107-1~073107-17.
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