Thermal Lens Determination of End-Pumped Solid-state Lasers by a Simple Direct Approach

Chin. Phys. Lett.

1999, Vol. 16

Issue (3): 181-183 DOI:

Original Articles

Thermal Lens Determination of End-Pumped Solid-state Lasers by a Simple Direct Approach

LIU Jun-hai;LU Jian-ren; LÜ Jun-hua;SHAO Zong-shu;JIANG Min-hua

National Laboratory of Crystal Materials, Shandong University, Ji’nan 250100

Cite this article:

LIU Jun-hai, LU Jian-ren, LÜ et al 1999 Chin. Phys. Lett. 16 181-183

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Abstract The stability of linear planar resonators involved in solid-state lasers is entirely decided by the thermal lens of the laser crystal. There exists a critical point between stable state and unstable state at which the thermal focal length equals the distance from the center of the crystal to one end mirror. Based on this fact, a new method for measuring the thermal focal length of the laser crystal has been presented and applied to a Nd³⁺:YVO₄ crystal at various absorbed pump power levels up to 10 W. The results have shown to be in good agreement with theoretical calculation.

Keywords: 42.55.Rz

Published: 01 March 1999

PACS:

42.55.Rz

(Doped-insulator lasers and other solid state lasers)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I3/0181

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	LU Jian-ren
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	SHAO Zong-shu
	JIANG Min-hua

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