Upconversion in La<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">F</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>: <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Tm</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span>

Shihua Huang; Shui T. Lai; Liren Lou; Weiyi Jia; W. M. Yen

doi:10.1103/PhysRevB.24.59

Upconversion in La $F_{3}$ : ${Tm}^{3 +}$

Shihua Huang, Shui T. Lai, Liren Lou, Weiyi Jia, and W. M. Yen

Phys. Rev. B 24, 59 – Published 1 July 1981

Abstract

When excited by the 6471-Å line from a krypton laser, blue and uv fluorescence has been observed in La $F_{3}$ : ${Tm}^{3 +}$ at room temperature. The main emission features have been identified as originating from the ${}^{1}D_{2}$ and ${}^{1}G_{4}$ levels, reached by a stepwise excitation process. A set of accurate Judd-Ofelt $Ω$ parameters for La $F_{3}$ : ${Tm}^{3 +}$ has been derived from the measured lifetime of the ${}^{1}D_{2}$ , ${}^{1}G_{4}$ , ${}^{3}H_{4}$ , and ${}^{3}F_{4}$ levels.

Received 9 December 1980

DOI:https://doi.org/10.1103/PhysRevB.24.59

Authors & Affiliations

Shihua Huang^*, Shui T. Lai, Liren Lou^†, Weiyi Jia^‡, and W. M. Yen

Department of Physics, University of Wisconsin, Madison, Wisconsin 53706

^*Permanent address: Institute of Physics, Academia Sinica, Changchun, Jilin, China.
^†Permanent address: Dept. of Physics, China Univ. of Science and Technology, Hefei, Anhui, China.
^‡Permanent address: Institute of Physics, Academia Sinica, Beijing, China.

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Vol. 24, Iss. 1 — 1 July 1981

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Physical Review B

covering condensed matter and materials physics