Emission cross section and quantum efficiency for the 1.55-um laser transition in Er3+-doped sodium Beta"-alumina crystal

Hongxing Dai; Oscar M. Stafsudd

doi:10.1117/12.149273

21 July 1993 Emission cross section and quantum efficiency for the 1.55-um laser transition in Er3+-doped sodium Beta"-alumina crystal

Hongxing Dai, Oscar M. Stafsudd

Author Affiliations +

Proceedings Volume 1863, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals II; (1993) https://doi.org/10.1117/12.149273
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The polarized emission cross section and quantum efficiency for the 1.55 micrometers laser transition (⁴I_13/2 yields ⁴I_15/2) 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.

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Hongxing Dai and Oscar M. Stafsudd "Emission cross section and quantum efficiency for the 1.55-um laser transition in Er3+-doped sodium Beta"-alumina crystal", Proc. SPIE 1863, Growth, Characterization, and Applications of Laser Host and Nonlinear Crystals II, (21 July 1993); https://doi.org/10.1117/12.149273

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