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Proceedings Paper

Emission cross section and quantum efficiency for the 1.55-um laser transition in Er3+-doped sodium Beta"-alumina crystal
Author(s): Hongxing Dai; Oscar M. Stafsudd
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Paper Abstract

The polarized emission cross section and quantum efficiency for the 1.55 micrometers laser transition (4I13/2 yields 4I15/2) in Er:SBA single crystal have been investigated through a spectroscopic approach based on a Judd-Ofelt analysis and a polarized fluorescence measurement. The effect of crystal orientation on the emission cross section has been studied. It has been found that the (pi) -polarized orientation has a cross section of about 3 times larger than the (sigma) -polarized counterpart. The total emission cross section for the transition of interest is 1.1 X 10-20 cm2 at 77 K and 7.5 X 10-21 cm2 at room temperature, respectively. Fluorescence decay measurements suggest that a nearly 100% quantum efficiency is possible for this laser line in an Er:SBA system.

Paper Details

Date Published: 21 July 1993
PDF: 9 pages
Proc. SPIE 1863, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals II, (21 July 1993); doi: 10.1117/12.149273
Show Author Affiliations
Hongxing Dai, Univ. of California/Los Angeles (Canada)
Oscar M. Stafsudd, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 1863:
Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals II
Bruce H. T. Chai, Editor(s)

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