Computer modeling and analysis of thermal link performance for an optical refrigerator

Kevin Byram; David Mar; John Parker; Steven Von der Porten; John Hankinson; Chris Lee; Kai Mayeda; Richard C. Haskell; Qimin Yang; Scott R. Greenfield; Richard I. Epstein

doi:10.1117/12.764287

4 February 2008 Computer modeling and analysis of thermal link performance for an optical refrigerator

Kevin Byram, David Mar, John Parker, Steven Von der Porten, John Hankinson, Chris Lee, Kai Mayeda, Richard C. Haskell, Qimin Yang, Scott R. Greenfield, Richard I. Epstein

Author Affiliations +

Proceedings Volume 6907, Laser Refrigeration of Solids; 69070C (2008) https://doi.org/10.1117/12.764287
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

We have used the thermal modeling tool in COMSOL Multiphysics to investigate factors that affect the thermal performance of the optical refrigerator. Assuming an ideal cooling element and a non-absorptive dielectric trapping mirror, the three dominant heating factors are blackbody radiation from the surrounding environment, conductive heat transfer through mechanical supports, and the absorption of fluoresced photons transmitted through the thermal link. Laboratory experimentation coupled with computer modeling using Code V optical software have resulted in link designs capable of reducing the transmission to 0.04% of the fluoresced photons emitted toward the thermal link. The ideal thermal link will have minimal surface area, provide complete optical isolation for the load, and possess high thermal conductivity. Modeling results imply that a 1cm³ load can be chilled to 102 K with currently available cooling efficiencies using a 100 W pump laser on a YB:ZBLANP system, and using an ideal link that has minimal surface area and no optical transmission. We review the simulated steady-state cooling temperatures reached by the heat load for several link designs and system configurations as a comparative measure of how well particular configurations perform.

Citation Download Citation

Kevin Byram, David Mar, John Parker, Steven Von der Porten, John Hankinson, Chris Lee, Kai Mayeda, Richard C. Haskell, Qimin Yang, Scott R. Greenfield, and Richard I. Epstein "Computer modeling and analysis of thermal link performance for an optical refrigerator", Proc. SPIE 6907, Laser Refrigeration of Solids, 69070C (4 February 2008); https://doi.org/10.1117/12.764287

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