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Efficiency and threshold pump intensity of CW solar-pumped solid-state lasersThe authors consider the relation between the threshold pumping intensity, the material properties, the resonator parameters, and the ultimate slope efficiencies of various solid-state laser materials for solar pumping. They clarify the relation between the threshold pump intensity and the material parameters and the relation between the ultimate slope efficiency and the laser resonator parameters such that a design criterion for the solar-pumped solid-state laser can be established. Among the laser materials evaluated, alexandrite has the highest slope efficiency of about 12.6 percent; however, it does not seem to be practical for a solar-pumped laser application because of its high threshold pump intensity. Cr:Nd:GSGG is the most promising for solar-pumped lasing. Its threshold pump intensity is about 100 air-mass-zero (AM0) solar constants and its slope efficiency is about 12 percent when thermal deformation is completely prevented.
Document ID
19910072039
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hwang, In H.
(Hampton University VA, United States)
Lee, Ja H.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Publication Information
Publication: IEEE Journal of Quantum Electronics
Volume: 27
ISSN: 0018-9197
Subject Category
Lasers And Masers
Accession Number
91A56662
Funding Number(s)
CONTRACT_GRANT: NAG1-1091
Distribution Limits
Public
Copyright
Other

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