Cryogenic assessment of an absorptive baffle for capturing stray photons from the PRIMA FIRESS laser displacement metrology system

Citation

A. Christiansen, B. Gom, D. Naylor, A. Cournoyer^*, M. Larouche, É. Carbonneau, H. Bourque, and N. Milaniak. "Cryogenic assessment of an absorptive baffle for capturing stray photons from the PRIMA FIRESS laser displacement metrology system". In: Optica ImageSense Congress 2026, 2026. Maastricht, Netherlands.
Conference Proceedings Submitted

Abstract

Future far-infrared space observatories using FTS need precise laser displacement metrology, which risks stray photons reaching the science detectors. We present a cryogenic detection method to characterize a photon-trapping system for PRIMA FIRESS.