Title :
Optical refrigeration cools below 100K
Author :
Melgaard, Seth D. ; Albrecht, Alexander ; Hehlen, Markus ; Seletskiy, D.V. ; Sheik-Bahae, Mansoor
Author_Institution :
Phys. & Astron. Dept., Univ. of New Mexico, Albuquerque, NM, USA
Abstract :
We report a milestone in optical refrigeration, cooling a 10% Yb:YLF crystal to 93K (ΔT~180K); obtaining the coldest solid-state temperature to date. Identification of transition metal impurities via mass spectrometry allows further cooling through purification.
Keywords :
impurities; laser cooling; laser materials processing; lithium compounds; mass spectroscopy; purification; ytterbium; YLF:Yb; mass spectrometry; optical cooling; optical refrigeration; purification; solid-state temperature; temperature 93 K; transition metal impurity Identification; Absorption; Cooling; Crystals; Heating; Impurities; Laser excitation; Optical saturation;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
