Exoplanet detection with photonic lanterns for focal-plane wavefront sensing and control
Exoplanet detection with photonic lanterns for focal-plane wavefront sensing and control
复制标题
使用光子灯进行系外行星探测,用于焦平面波前传感和控制
DOI:
10.1117/12.2630692
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Guyon, Olivier
中科院分区:
文献类型:
--
作者:
Lin, Jonathan;Xin, Yinzi;Norris, Barnaby R.;Kim, Yoo Jung;Sallum, Steph;Betters, Christopher;Leon-Saval, Sergio;Lozi, Julien;Vievard, Sebastian;Guyon, Olivier
Inner working angle is a key parameter for enabling scientific discovery in direct exoplanet imaging and characterization. Approaches to improving the inner working angle to reach the diffraction limit center on the sensing and control of wavefront errors, starlight suppression via coronagraphy, and differential techniques applied in post-processing. These approaches are ultimately limited by the shot noise of the residual starlight, placing a premium on the ability of the adaptive optics system to sense and control wavefront errors so that the coronagraph can effectively suppress starlight reaching the science focal plane. Photonic lanterns are attractive for use in the science focal plane because of their ability to spatially filter light using a finite basis of accepted modes and effectively couple the results to diffraction-limited spectrometers, providing a compact and cost-effective means to implement post-processing based on spectral diversity. We aim to characterize the ability of photonic lanterns to serve as focal-plane wavefront sensors, allowing the adaptive optics system to control aberrations affecting the science focal plane and reject additional stellar photon noise. By serving as focal-plane wavefront sensors, photonic lanterns can improve sensitivity to exoplanets through both direct and coronagraphic observations. We have studied the sensing capabilities of photonic lanterns in the linear and quadratic regimes with analytical and numerical treatments for different lantern geometries (including non-mode-selective, mode-selective, and hybrid geometries) as a function of port number. In this presentation we report on the sensitivity of such lanterns and comment on the relative suitability and sensitivity impacts of different lantern geometries for focal-plane wavefront sensing.
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DOI:
10.1364/josab.423664
发表时间:
2021
期刊:
Journal of the Optical Society of America B
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1117/12.2528555
发表时间:
2019
期刊:
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影响因子:
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DOI:
10.1117/12.2314407
发表时间:
2018
期刊:
Ground-based and Airborne Instrumentation for Astronomy VIII
影响因子:
--
作者:
E. Por;S. Haffert;V. M. Radhakrishnan;D. Doelman;M. V. van Kooten;S. Bos
通讯作者:
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
P. Martinez;C. Loose;E. A. Carpentier;M. Kasper
通讯作者:
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影响因子:
4.8
作者:
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