Space qualification studies of AOTF devices under the MISSE-11 mission

Narasimha S. Prasad; Sudhir B. Trivedi; Priyanthi Amarasinghe; Feng Jin; Mark Distler; Joo Soo Kim; Hayden Diener

doi:10.1117/12.3003450

12 March 2024 Space qualification studies of AOTF devices under the MISSE-11 mission

Narasimha S. Prasad, Sudhir B. Trivedi, Priyanthi Amarasinghe, Feng Jin, Mark Distler, Joo Soo Kim, Hayden Diener

Author Affiliations +

Proceedings Volume 12864, Solid State Lasers XXXIII: Technology and Devices; 1286408 (2024) https://doi.org/10.1117/12.3003450
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

The Acousto-Optic Tunable Filter (AOTF) devices are used in a variety of applications including hyperspectral and spectrapolarimetric based imaging. The AOTF devices provide several advantages including speed and random access to desired spectral bands and enable all-solid-state operation that are attractive for space applications. In this paper, the performance of Tellurium Dioxide (TeO₂) and Mercurous Bromide (Hg₂Br₂) AOTF devices in space environment carried out under the NASA’s Materials International Space Station Experiments 11 (MISSE-11) mission is discussed. The purpose of the MISSE-11 mission was to study materials and devices subjected to space conditions for long term while attached to the International Space Station (ISS). The TeO₂ AOTF was developed for Short Wavelength IR (SWIR) operation while the Hg₂Br₂ AOTF device was developed for Long Wavelength IR (LWIR) operation. These devices were attached to the ISS platform for more than a year. Pre-flight and post-flight performance characterization were performed on these devices. In the case of TeO₂ AOTF, the preflight efficiency was around 87% with a center frequency at 68MHz while the post-flight efficiency was around 83%. However, the optical transmission of Hg₂Br₂ AOTF had deteriorated considerably. The details of performance testing and analysis of both AOTF devices are discussed.

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Narasimha S. Prasad, Sudhir B. Trivedi, Priyanthi Amarasinghe, Feng Jin, Mark Distler, Joo Soo Kim, and Hayden Diener "Space qualification studies of AOTF devices under the MISSE-11 mission", Proc. SPIE 12864, Solid State Lasers XXXIII: Technology and Devices, 1286408 (12 March 2024); https://doi.org/10.1117/12.3003450

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