Optical Refrigeration in the Solid State
Abstract
Operating at reduced temperature dramatically enhances the performance of many devices. Semiconductor laser diodes are more efficient and semiconductor photodetectors are more sensitive when cooled. Some devices, particularly those that depend on the phenomenon of superconductivity, only operate at cryogenic temperatures (less than approximately 150 K). Hence, the need for reliable refrigeration of electronic devices is well established. However, existing refrigeration technology is far from ideal. Vibrations produced by Sterling cycle refrigerators are detrimental to device performance. Magnetic salt cooling is not compatible with many applications. Cryogenic baths require a continuous supply of cryogenic liquids, which are difficult to make and transport. And the minimum temperature achievable via Peltier cooling is only about 220 K. Clearly, there is a need for a quiet, robust refrigerator that can achieve and maintain cryogenic temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1998
- Accession Number
- ADA365616
Entities
Organizations
- Office of Naval Research