Cryocooling arbitrary payloads: optical refrigeration coming of age (Conference Presentation)

Junwei Meng; Alexander R. Albrecht; Azzurra Volpi; Markus P. Hehlen; Richard I. Epstein; Mansoor Sheik-Bahae

doi:10.1117/12.2508825

4 March 2019 Cryocooling arbitrary payloads: optical refrigeration coming of age (Conference Presentation)

Junwei Meng, Alexander R. Albrecht, Azzurra Volpi, Markus P. Hehlen, Richard I. Epstein, Mansoor Sheik-Bahae

Proceedings Volume 10936, Photonic Heat Engines: Science and Applications; 109360C (2019) https://doi.org/10.1117/12.2508825
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Optical refrigeration of Yb:YLF crystals is used to cool an arbitrary payload (HgCdTe IR sensor) for the first time to below 135K in a completely vibration free environment. This milestone is made possible by the design and fabrication of a specialty thermal link that efficiently shields the payload from the intense fluorescence while sustaining frequent thermal cycling. We also show the latest advances in the design and implementation of novel thermal links that promise sub-100K payload temperatures. This investigation considers thermal link materials that are CTE-matched to YLF and includes rigorous optical and thermal modeling under various geometries.

Conference Presentation

Citation Download Citation

Junwei Meng, Alexander R. Albrecht, Azzurra Volpi, Markus P. Hehlen, Richard I. Epstein, and Mansoor Sheik-Bahae "Cryocooling arbitrary payloads: optical refrigeration coming of age (Conference Presentation)", Proc. SPIE 10936, Photonic Heat Engines: Science and Applications, 109360C (4 March 2019); https://doi.org/10.1117/12.2508825

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