Optical Refrigeration to 119 K, below National Institute of Standards and Technology Cryogenic Temperature
Abstract
We report on bulk optical refrigeration of Yb:YLF crystal to a temperature of 124 K, starting from the ambient. This is achieved by pumping the E4-E5 Stark multiplet transition at 1020 nm. A lower temperature of 119 +/- 1 K ( 154C) with available cooling power of 18 mW is attained when the temperature of the surrounding crystal is reduced to 210 K. This result is within only a few degrees of the minimum achievable temperature of our crystal and signifies the bulk solid-state laser cooling below the National Institute of Standards and Technology (NIST)- defined cryogenic temperature of 123 K.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2013
- Accession Number
- ADA599634
Entities
People
- Alberto Di Lieto
- Denis V. Seletskiy
- Mansoor Sheik-bahae
- Mauro Tonelli
- Seth D. Melgaard
Organizations
- Air Force Research Laboratory