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Spectroscopic Investigation of Ce(3+) Doped Fluoride CrystalsDoping of the trivalent rare-earth cerium ion into fluoride crystals is of interest in producing turnable ultra-violet solid state lasers. These lasers are desirable for many applications in medicine, industry, and scientific research, including remote sensing. High absorption and stimulated emission cross sections of the dipole allowed 4f-5d transitions show promise in cerium as a laser ion in crystals. Several research groups have already reported the observation of stimulated emission of cerium in LiYF4, LiSrAlF6, and LiCaAlF6. However, the color center formation in the crystals due to the excited state absorption of ultra-violet pump light adds difficulty to achieving laser action. We have investigated the spectroscopic properties of cerium such as absorption and emission spectra, and lifetimes in four different fluoride crystals, including LiCaAlF6, LiSrAlF6, KyF4 and LiYF4. We have derived the polarized absorption and stimulated emission cross sections from transmission and fluorescence emission measurements for each of the host crystals. we have measured the lifetime of the lowest 5d level; moreover, investigated the temperature dependence of this lifetime and color center formation. Our results on absorption and stimulated emission cross sections for LiCaAlF6 and LiSrAlF6 are similar to the results already published.
Document ID
19960003457
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Reinhart, Donald H.
(Bucknell Univ. Lewisburg, PA., United States)
Armagan, Guzin
(College of William and Mary Hampton, VA., United States)
Marsh, Waverly
(Science Applications International Corp. Hampton, VA., United States)
Barnes, James
(NASA Langley Research Center Hampton, VA, United States)
Chai, B. H. T.
(University of Central Florida Orlando, FL., United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1995
Publication Information
Publication: Second Annual Research Center for Optical Physics (RCOP) Forum
Subject Category
Solid-State Physics
Accession Number
96N13466
Funding Number(s)
CONTRACT_GRANT: NSF PHY-93-00205
CONTRACT_GRANT: NAS1-19656
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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