Faithin Omaha eBook Collection

Download or read book All Solid-State Optical Cryocoolers written by and published by . This book was released on 2004 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report on the research performed under AFOSR grant F4962O-O2-OO59. In conjunction with another AFOSR grant (F49620-02-0057), we undertook a comprehensive research program to address the fundamental issues of optical refrigeration in solids important for the development of practical solid-state cryocoolers. We pursued two main avenues of research: First, we explored new rare-earth-doped glasses and crystals that have improved cooling efficiencies and/or lower operating temperatures. This phase also investigated the fundamental physics of optical refrigeration as well as limitations imposed by the structure and composition of the glass for reaching cryogenic temperatures. Second, we studied semiconductor-based optical refrigerators that are much more compact and may achieve appreciably lower operating temperatures than devices based on rare-earth-doped glasses or crystals.