Quantitative measurement of thermal lens in diode-laser pumped self-frequency-doubled Nd,Lu:YAl3(BO3)4 laser under lasing and non-lasing conditions

Masayuki Shimosegawa, Takashige Omatsu, Akira Hasegawa, Mitsuhiro Tateda, Iwao Ogura, Pu Wang, Judith M. Dawes

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4 Citations (Scopus)

Abstract

We present a quantitative comparison between thermal lenses under lasing and non-lasing conditions in a diode-laser pumped self-frequency-doubled Nd,Lu:YAl3(BO3)4 laser using an interferometric technique. At the pump power of 1.5 W, the thermal lens under the non-lasing condition attained 8 m-1 and this corresponded to 170% of that under the lasing condition. Validity of the measured thermal lenses was confirmed by investigating the dependence of output power on the cavity length. The difference between thermal lenses under lasing and non-lasing conditions is caused by the nonradiative loss process of the upper level due to the cross-relaxation.

Original languageEnglish
Pages (from-to)6335-6339
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number11
Publication statusPublished - Nov 1999

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