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Realization of an all-solid-state cryocooler using optical refrigeration
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Paper Abstract

Optical refrigeration of rare-earth-doped solids has reached the boiling point of argon, 87 K, and is expected to cool to that of nitrogen, 77 K, in the near future. This technology is poised to pave the way to compact, reliable, and vibrationfree all-solid-state optical cryocoolers. By attaching the Yb:YLF cooling crystal to a cold finger via a double 90° kink thermal link, we have cooled a silicon temperature sensor to below 151 K. An advanced design of the thermal link and the clamshell surrounding the cooled assembly successfully controlled the flow of heat and radiation to allow cooling of a payload to cryogenic temperatures. Key elements of the design were a low-absorption thermal link material, an optimized thermal link geometry, and a spectrally-selective coating of the clamshell.

Paper Details

Date Published: 9 May 2018
PDF: 9 pages
Proc. SPIE 10626, Tri-Technology Device Refrigeration (TTDR) III, 106260B (9 May 2018); doi: 10.1117/12.2305195
Show Author Affiliations
Junwei Meng, The Univ. of New Mexico (United States)
Alexander R. Albrecht, The Univ. of New Mexico (United States)
Aram Gragossian, The Univ. of New Mexico (United States)
Eric Lee, The Univ. of New Mexico (United States)
Azzurra Volpi, The Univ. of New Mexico (United States)
Mohammadreza Ghasemkhani, The Univ. of New Mexico (United States)
Markus P. Hehlen, Los Alamos National Lab. (United States)
Richard I. Epstein, ThermoDynamic Films LLC (United States)
Mansoor Sheik-Bahae, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 10626:
Tri-Technology Device Refrigeration (TTDR) III
Mansoor Sheik-Bahae; Richard I. Epstein; Bjørn F. Andresen; Tonny Benschop; Joseph P. Heremans; Sergey V. Riabzev, Editor(s)

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