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

doi:10.1007/s12200-009-0067-z

Front Optoelec Chin

2009, Vol. 2

Issue (4) : 410-413 https://doi.org/10.1007/s12200-009-0067-z

RESEARCH ARTICLE

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

School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China

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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

Corresponding Author(s): GAO Chunqing,Email:gao@bit.edu.cn

Issue Date: 05 December 2009

Cite this article:

Zhifeng LIN,Chunqing GAO,Mingwei GAO, et al. Diode-pumped single-frequency Tm:YAG NPRO laser by using different pumping spot sizes[J]. Front Optoelec Chin, 2009, 2(4): 410-413.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-009-0067-z
https://academic.hep.com.cn/foe/EN/Y2009/V2/I4/410

Fig.1 Composite cavity Tm:YAG NPRO laser end-pumped by two polarization-coupled continuous-wave laser diode (LD: laser diode)

Fig.2 Output powers of Tm:YAG NPRO laser as a function of pump power

Fig.3 Wavelength of Tm:YAG NPRO laser

Fig.4 Transmitted signal from scanning FPI showing single-frequency operation (a) and multimode operation (b) in different laser powers

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