Utilizing a novel implementation of differential luminescence thermometry we accurately measure laser cooling efficiency spectra of solids. Cooling to 110K is shown in Yb:YLF at the E4-E5 Stark manifold resonance as predicted by theory.
© 2011 OSA
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.3320) Lasers and laser optics : Laser cooling
(160.5690) Materials : Rare-earth-doped materials
S. Melgaard, D. Seletskiy, A. Di Lieto, M. Tonelli, and M. Sheik-Bahae, "High Sensitivity Optical Refrigeration Spectroscopy: Local Cooling of Yb:YLF Crystal to 110 K," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper QWI4.
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