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Title: SBIR Grant:No-Vibration Agile Cryogenic Optical Refrigerator

Abstract

Optical refrigeration is currently the only all-solid-state cryocooling technology that has been demonstrated. Optical cryocoolers are devices that use laser light to cool small crystal or glass cooling elements. The cooling element absorbs the laser light and reradiates it at higher energy, an example of anti-Stokes fluorescence. The dif-ference between the energy of the outgoing and incoming light comes from the thermal energy of the cooling element, which in turn becomes colder. Entitled No-Vibration Agile Cryocoolers using Optical Refrigeration, this Phase I proposal directly addressed the continued development of the optical refrigerator components necessary to transition this scientific breakthrough into National Nu-clear Security Administration (NNSA) sensor applications in line with the objectives of topic 50b. ThermoDynamic Films LLC (TDF), in collaboration with the University of New Mexico (UNM), cooled an optical-refrigerator cooling element comprised of an ytterbium-doped yttrium lithium fluoride (Yb:YLF) crystal from room tempera-ture to 123 K with about 2% efficiency. This is the world record in optical refrigera-tion and an important step toward revolutionizing cryogenic systems for sensor ap-plications. During this period, they also designed and analyzed the crucial elements of a prototype optical refrigerator including the thermal link that connects the cool-ing element with the load.

Authors:
Publication Date:
Research Org.:
ThermoDynamic Films LLC
Sponsoring Org.:
USDOE
OSTI Identifier:
1073050
Report Number(s):
DOE F.241.3
DOE Contract Number:  
SC0006450
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; optical cooling; optical refrigeration; cryocooling; solid-state cooling; lasers; anti-Stokes luminescence; sensor cooling; space-borne IR sensor cooling

Citation Formats

Epstein, Richard. SBIR Grant:No-Vibration Agile Cryogenic Optical Refrigerator. United States: N. p., 2013. Web. doi:10.2172/1073050.
Epstein, Richard. SBIR Grant:No-Vibration Agile Cryogenic Optical Refrigerator. United States. https://doi.org/10.2172/1073050
Epstein, Richard. Tue . "SBIR Grant:No-Vibration Agile Cryogenic Optical Refrigerator". United States. https://doi.org/10.2172/1073050. https://www.osti.gov/servlets/purl/1073050.
@article{osti_1073050,
title = {SBIR Grant:No-Vibration Agile Cryogenic Optical Refrigerator},
author = {Epstein, Richard},
abstractNote = {Optical refrigeration is currently the only all-solid-state cryocooling technology that has been demonstrated. Optical cryocoolers are devices that use laser light to cool small crystal or glass cooling elements. The cooling element absorbs the laser light and reradiates it at higher energy, an example of anti-Stokes fluorescence. The dif-ference between the energy of the outgoing and incoming light comes from the thermal energy of the cooling element, which in turn becomes colder. Entitled No-Vibration Agile Cryocoolers using Optical Refrigeration, this Phase I proposal directly addressed the continued development of the optical refrigerator components necessary to transition this scientific breakthrough into National Nu-clear Security Administration (NNSA) sensor applications in line with the objectives of topic 50b. ThermoDynamic Films LLC (TDF), in collaboration with the University of New Mexico (UNM), cooled an optical-refrigerator cooling element comprised of an ytterbium-doped yttrium lithium fluoride (Yb:YLF) crystal from room tempera-ture to 123 K with about 2% efficiency. This is the world record in optical refrigera-tion and an important step toward revolutionizing cryogenic systems for sensor ap-plications. During this period, they also designed and analyzed the crucial elements of a prototype optical refrigerator including the thermal link that connects the cool-ing element with the load.},
doi = {10.2172/1073050},
url = {https://www.osti.gov/biblio/1073050}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {4}
}