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

Junwei Meng; Alexander R. Albrecht; Aram Gragossian; Eric Lee; Azzurra Volpi; Mohammadreza Ghasemkhani; Markus P. Hehlen; Richard I. Epstein; Mansoor Sheik-Bahae

doi:10.1117/12.2305195

9 May 2018 Realization of an all-solid-state cryocooler using optical refrigeration

Junwei Meng, Alexander R. Albrecht, Aram Gragossian, Eric Lee, Azzurra Volpi, Mohammadreza Ghasemkhani, Markus P. Hehlen, Richard I. Epstein, Mansoor Sheik-Bahae

Author Affiliations +

Proceedings Volume 10626, Tri-Technology Device Refrigeration (TTDR) III; 106260B (2018) https://doi.org/10.1117/12.2305195
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

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.

Conference Presentation

Citation Download Citation

Junwei Meng, Alexander R. Albrecht, Aram Gragossian, Eric Lee, Azzurra Volpi, Mohammadreza Ghasemkhani, Markus P. Hehlen, Richard I. Epstein, and Mansoor Sheik-Bahae "Realization of an all-solid-state cryocooler using optical refrigeration", Proc. SPIE 10626, Tri-Technology Device Refrigeration (TTDR) III, 106260B (9 May 2018); https://doi.org/10.1117/12.2305195

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