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Energy transfer processes between Tm(3+) and Ho(3+) in LiYF4The spectroscopic properties of the crystal LiYF4 doped with Thulium (Tm) and Holmium (Ho) ions are studied. The basic processes are discussed that regulate the transfer of energy between these two ions in this crystal. In this system Tm is considered the donor ion and the Ho the acceptor ion. Spectral data were obtained on three samples available: LiYF4:Tm(3+) (0.5 percent), LiYF4:Ho(3+) (1 percent), and LiYF4:Tm(3+) (5 percent), Ho(3+) (0.2 percent). Spectral data, which include absorption, luminescence, excitation, and the response to pulsed excitation in a wide range of temperatures, allowed to look at the energy transfer processes by considering the kinetic evolution of the emission of the two ions (donor and acceptor) involved in the process and the basic spectroscopic properties related to them. This inclusive approach has led to the validation of the physical model.
Document ID
19910018216
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Oezen, Goenuel (Boston Coll. Chestnut Hill, MA, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1991
Subject Category
Lasers And Masers
Report/Patent Number
NASA-CR-187578
NAS 1.26:187578
Accession Number
91N27530
Funding Number(s)
CONTRACT_GRANT: NAG1-955
PROJECT: RTOP 590-31-31-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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