Ho Concentration Dependence of Yb, Ho Upconversion Energy Transfer in KYF4

X.X. Zhang; M. Bass; B.H.T. Chai

doi:10.1364/CBGL.1993.JWC.3

Compact Blue-Green Lasers
Technical Digest Series (Optica Publishing Group, 1993),
paper JWC.3
•https://doi.org/10.1364/CBGL.1993.JWC.3

Ho Concentration Dependence of Yb, Ho Upconversion Energy Transfer in KYF₄

X.X. Zhang, M. Bass, and B.H.T. Chai

Compact Blue-Green Lasers 1993

New Orleans United States
2–4 February 1993
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Joint Poster Session (JWC)

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X. X. Zhang, M. Bass, and B. H. T. Chai, "Ho Concentration Dependence of Yb, Ho Upconversion Energy Transfer in KYF4," in Compact Blue-Green Lasers, Technical Digest Series (Optica Publishing Group, 1993), paper JWC.3.

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Abstract

We have found that the Yb → Ho upconversion process in KYF₄ (KYF) is much more efficient than in either BaY₂F₈ or YLiF₄ [1] under the same doping conditions. Long lifetime, low phonon energy, weak self-absorption, and some other unique spectroscopic features make KYF a promising host for an Yb, Ho upconversion green laser. In order to optimize the upconversion efficiency, we have carried out a detailed study on the Ho concentration dependence of the Yb → Ho transfer processes in KYF.

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