19 February 2014 Optical cooling in multi-level systems
Author Affiliations +
Proceedings Volume 9000, Laser Refrigeration of Solids VII; 90000G (2014) https://doi.org/10.1117/12.2040073
Event: SPIE OPTO, 2014, San Francisco, California, United States
A theoretical model for optical cooling is developed, which yields the overall efficiency of a single endpumped cooling system. This model includes the effects of background absorption and pump saturation, while in multi-level systems, the model accounts for the important energy transfer processes. Two-level efficiency is evaluated for the case of Yb:YAG and compared with a hypothetical three-level material with identical spectral properties. This model is readily modified to include more levels and different materials.
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Steven R. Bowman, Steven R. Bowman, Joseph Ganem, Joseph Ganem, Christopher G. Brown, Christopher G. Brown, "Optical cooling in multi-level systems", Proc. SPIE 9000, Laser Refrigeration of Solids VII, 90000G (19 February 2014); doi: 10.1117/12.2040073; https://doi.org/10.1117/12.2040073


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