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  • The photonic lantern wavefront sensor and imager: focal plane wavefront sensing and optimal imaging at the diffraction limit and beyond
Title: The photonic lantern wavefront sensor and imager: focal plane wavefront sensing and optimal imaging at the diffraction limit and beyond
Award ID(s):
2308360 2109231
PAR ID:
10648375
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Editor(s):
Schmidt, Dirk; Vernet, Elise; Jackson, Kathryn J
Publisher / Repository:
SPIE
Date Published:
Page Range / eLocation ID:
54
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  1. ; ; (, Measurement Science and Technology)
  2. ; ; ; ; ; ; ; ; ; ; et al (, Proceedings of the SPIE)
    Schmidt, Dirk; Schreiber, Laura; Vernet, Elise (Ed.)
    The MMTO Adaptive optics exoPlanet characterization System (MAPS) is an ongoing upgrade to the 6.5-meter MMT Observatory on Mount Hopkins in Arizona. MAPS includes an upgraded adaptive secondary mirror (ASM), upgrades to the ARIES spectrograph, and a new AO system containing both an optical and near-infrared (NIR; 0.9-1.8 μm) pyramid wavefront sensor (PyWFS). The NIR PyWFS will utilize an IR-optimized double pyramid coupled with a SAPHIRA detector: a low-read noise electron Avalanche Photodiode (eAPD) array. This NIR PyWFS will improve MAPS's sky coverage by an order of magnitude by allowing redder guide stars (e.g. K & M-dwarfs or highly obscured stars in the Galactic plane) to be used. To date, the custom designed cryogenic SAPHIRA camera has been fully characterized and can reach sub-electron read noise at high avalanche gain. In order to test the performance of the camera in a closed-loop environment prior to delivery to the observatory, an AO testbed was designed and constructed. In addition to testing the SAPHIRA's performance, the testbed will be used to test and further develop the proposed on-sky calibration procedure for MMTO's ASM. We will report on the anticipated performance improvements from our NIR PyWFS, the SAPHIRA's closed-loop performance on our testbed, and the status of our ASM calibration procedure. 
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  3. ; ; ; (, IEEE International Conference on Computational Photography (ICCP))
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    Schmidt, Dirk; Schreiber, Laura; Vernet, Elise (Ed.)
  5. ; ; ; (, Conference on Lasers & Electro-Optics)
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