Identification of parasitic losses in Yb:YLF and prospects for optical refrigeration down to 80K

Seth Melgaard; Denis Seletskiy; Victor Polyak; Yemane Asmerom; Mansoor Sheik-Bahae

doi:10.1364/OE.22.007756

Identification of parasitic losses in Yb:YLF and prospects for optical refrigeration down to 80K

Opt Express. 2014 Apr 7;22(7):7756-64. doi: 10.1364/OE.22.007756.

Authors

Seth Melgaard, Denis Seletskiy, Victor Polyak, Yemane Asmerom, Mansoor Sheik-Bahae

PMID: 24718151
DOI: 10.1364/OE.22.007756

Abstract

Systematic study of Yb doping concentration in the Yb:YLF cryocoolers by means of optical and mass spectroscopies has identified iron ions as the main source of the background absorption. Parasitic absorption was observed to decrease with Yb doping, resulting in optical cooling of a 10% Yb:YLF sample to 114K ± 1K, with room temperature cooling power of 750 mW and calculated minimum achievable temperature of 93 K.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.