Laser cooling of solids has advanced immensely in recent years and temperatures well below 100 K have been demonstrated in Yb:YLF crystals. We will discuss our progress towards developing a functional all-solid-state cryocooler based on this principle. We present data and analysis concerning laser coupling efficiency, thermal link between the cooling crystal and the cold-finger, shielding the load from the fluorescence, and overall thermal load management. Considerations for building a cooler prototype for specific applications will also be discussed.
Aram Gragossian, Junwei Meng, Mohammadreza Ghasemkhani, Alexander R. Albrecht, Eric Lee, Bernardo Farfan, Guy Symonds, Richard Epstein, and Mansoor Sheik-Bahae, "Recent advances in optical refrigeration of a load (Conference Presentation)," Proc. SPIE 10180, Tri-Technology Device Refrigeration (TTDR) II, 101800B (Presented at SPIE Defense + Security: April 11, 2017; Published: 7 June 2017); https://doi.org/10.1117/12.2266159.5458059487001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon