Structural, thermal, and luminescent properties of Yb-doped Y3Al5O12 crystals

Xiaodong Xu; Zhiwei Zhao; Pingxin Song; Guoqing Zhou; Jun Xu; Peizhen Deng

doi:10.1364/JOSAB.21.000543

Structural, thermal, and luminescent properties of Yb-doped Y₃Al₅O₁₂ crystals

Xiaodong Xu, Zhiwei Zhao, Pingxin Song, Guoqing Zhou, Jun Xu, and Peizhen Deng

Journal of the Optical Society of America B
Vol. 21,
Issue 3,
pp. 543-547
(2004)
•https://doi.org/10.1364/JOSAB.21.000543

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Xiaodong Xu, Zhiwei Zhao, Pingxin Song, Guoqing Zhou, Jun Xu, and Peizhen Deng, "Structural, thermal, and luminescent properties of Yb-doped Y₃Al₅O₁₂ crystals," J. Opt. Soc. Am. B 21, 543-547 (2004)

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Abstract

Yb-doped $Y_{3} {Al}_{5} O_{12}$ (Yb:YAG) single crystals were grown by the Czochralski method. The effects of various ${Yb}^{3 +}$ concentrations on structural distortion, density, and thermal expansion of Yb:YAG laser crystals are discussed. The fluorescence spectra, fluorescence lifetimes, and color-center absorption spectra of as-grown and annealed Yb:YAG with various doping levels were measured at room temperature. The effects of color centers on the fluorescence intensity and lifetime of Yb:YAG were also investigated.

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${Yb}^{3 +}$ Concentration (at. %)	$a (nm)$	$V ({nm}^{3})$	ρ (g/cm³)
0	$1.201159 \pm 0.000034$	1.73301	4.55
5.4	$1.200424 \pm 0.000063$	1.72983	4.66
10.7	$1.200058 \pm 0.000043$	1.72825	4.77
16.3	$1.199765 \pm 0.000058$	1.72699	4.89
21.8	$1.199439 \pm 0.000042$	1.72558	5.00
27.1	$1.199214 \pm 0.000038$	1.72461	5.11
53.6	$1.197364 \pm 0.000065$	1.71664	5.65
100	$1.193799 \pm 0.000054$	1.70135	6.62

Temperature (K)	Expansion Coefficient of Yb:YAG $(\times 10^{- 6} / K)$
	5 at. % Yb	15 at. % Yb	25 at. % Yb
323	4.84	5.09	6.13
373	6.24	6.41	6.96
473	7.22	7.39	7.50
573	7.69	7.75	7.80
673	8.00	8.02	8.08
773	8.22	8.26	8.32
873	8.42	8.44	8.51
973	8.56	8.61	8.67
1073	8.78	8.82	8.87

${Yb}^{3 +}$ Concentration (at. %)	$a (nm)$	$V ({nm}^{3})$	ρ (g/cm³)
0	$1.201159 \pm 0.000034$	1.73301	4.55
5.4	$1.200424 \pm 0.000063$	1.72983	4.66
10.7	$1.200058 \pm 0.000043$	1.72825	4.77
16.3	$1.199765 \pm 0.000058$	1.72699	4.89
21.8	$1.199439 \pm 0.000042$	1.72558	5.00
27.1	$1.199214 \pm 0.000038$	1.72461	5.11
53.6	$1.197364 \pm 0.000065$	1.71664	5.65
100	$1.193799 \pm 0.000054$	1.70135	6.62

Temperature (K)	Expansion Coefficient of Yb:YAG $(\times 10^{- 6} / K)$
	5 at. % Yb	15 at. % Yb	25 at. % Yb
323	4.84	5.09	6.13
373	6.24	6.41	6.96
473	7.22	7.39	7.50
573	7.69	7.75	7.80
673	8.00	8.02	8.08
773	8.22	8.26	8.32
873	8.42	8.44	8.51
973	8.56	8.61	8.67
1073	8.78	8.82	8.87

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