Diode-pumped single-frequency Tm:YAG NPRO laser by using different pumping spot sizes

Zhifeng LIN; Chunqing GAO; Mingwei GAO; Yunshan ZHANG; Lingni ZHU; Yan ZHENG

doi:10.1007/s12200-009-0067-z

Front. Optoelectron. ›› 2009, Vol. 2 ›› Issue (4) : 410 -413. DOI: 10.1007/s12200-009-0067-z

RESEARCH ARTICLE

Diode-pumped single-frequency Tm:YAG NPRO laser by using different pumping spot sizes

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Abstract

This paper presents the experimental results of the monolithic Tm:YAG nonplanar ring oscillator (NPRO) pumped by two kinds of laser diodes with different pumping spot sizes. By longitudinal pumping in continuous-wave operation, a single-frequency output power of 404 mW was obtained at room temperature, with a slope efficiency of 48.2%. The influences of the pumping spot sizes on the beam properties were also discussed.

Keywords

nonplanar ring oscillator (NPRO) / Tm:YAG laser / laser diode / pumping spot size

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Zhifeng LIN,Chunqing GAO,Mingwei GAO,Yunshan ZHANG,Lingni ZHU,Yan ZHENG. Diode-pumped single-frequency Tm:YAG NPRO laser by using different pumping spot sizes. Front. Optoelectron., 2009, 2(4): 410-413 DOI:10.1007/s12200-009-0067-z