A compact three-sided reflective pyramid wavefront sensor: optical design and closed-loop adaptive optics testbed characterization

Dominic F. Sanchez; Yuhui Wang; Philip M. Hinz

doi:10.1117/12.3019485

27 August 2024 A compact three-sided reflective pyramid wavefront sensor: optical design and closed-loop adaptive optics testbed characterization

Dominic F. Sanchez, Yuhui Wang, Philip M. Hinz

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 130971R (2024) https://doi.org/10.1117/12.3019485
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The next generation of extremely large telescopes (ELTs) will require sensitive low order wavefront sensor (WFS), such as the pyramid wavefront sensor (PWFS), for first stage adaptive optics (AO) correction. Traditional PWFS utilize glass prisms to produce four pupils for wavefront measurement. Alternative optical designs have been realized to achromatize these sensors and increase their effective spectral range. Current WFSs optical designs are optimized for a specific bandpass, such as the visible and near-infrared. This may require deploying more than one WFS that is optically designed for its respective wavelength regime. To mitigate this challenge with transmissive WFSs, a three-sided reflective pyramid wavefront sensor (3-RPWFS) has recently been demonstrated on-sky using Shane Telescope at Lick Observatory. Because of its reflective design and wavelength independence, this WFS can operate at much larger spectral range, encompassing both the visible and near-infrared. In this paper, we present a new compact 3-RPWFS design optimizes space and characterize closed-loop adaptive optics performance.

Conference Presentation

Citation Download Citation

Dominic F. Sanchez, Yuhui Wang, and Philip M. Hinz "A compact three-sided reflective pyramid wavefront sensor: optical design and closed-loop adaptive optics testbed characterization", Proc. SPIE 13097, Adaptive Optics Systems IX, 130971R (27 August 2024); https://doi.org/10.1117/12.3019485

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