High-efficiency Nd:YVO 4 laser end-pumped with a diode laser bar
Yihong Chen, Zhengjun Xiong, Gnian Cher Lim, HongYu Zheng, Xiaoyuan Peng
Abstract
Yihong Chen, Zhengjun Xiong, Gnian Cher Lim, HongYu Zheng, Xiaoyuan Peng
Abstract
Diode end-pumped solid-state lasers have the potential to yield high quality laser beams with high efficiency. However, its limited pump volume results in limited output power, usually under 1W. This paper presents a high- efficiency Nd:YVO4 laser end-pumped by a 15W diode laser bar. An optical-optical efficiency as high as 42 percent and an output laser power of over 3W were obtained with a beam quality factor, M2 of less than 1.2 and an output stability of +/- 0.5 percent. Theoretical calculations and experimental data showed that the pumping laser beam was well-matched to the intracavity laser mode.
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Diode end-pumped solid-state lasers have the potential to yield high quality laser beams with high efficiency. However, its limited pump volume results in limited output power, usually under 1W. This paper presents a high- efficiency Nd:YVO4 laser end-pumped by a 15W diode laser bar. An optical-optical efficiency as high as 42 percent and an output laser power of over 3W were obtained with a beam quality factor, M2 of less than 1.2 and an output stability of +/- 0.5 percent. Theoretical calculations and experimental data showed that the pumping laser beam was well-matched to the intracavity laser mode.
Key concepts: Laser, Laser beam quality, Materials science, Bar (unit), Optics, Slope efficiency, Laser power scaling, Laser pumping