164W LD side-pumped quasi-continuous-wave Nd：YAG/HGTR-KTP green laser

LI Cheng-rong; CHEN Xiu-yan; LI Xiu; ZHENG Xin-liang; WANG Jun; CHEN Hao-wei; REN Zhao-yu; BAI Jin-tao

In order to investigate more than one hundred Watt green laser,two serial rods pumped by laser diodes and two Q-switched V-shaped resonators were used.Based on the transmission matrixes,when single and double rods were placed in the cavity respectively,the stable condition of cavity,the light distribution in the folded arm,along with the sagittal and tangential spot size on the nonlinear crystal influenced by the thermal lens effect were analyzed and compared.A high gray tracking resistivity (HGTR)-KTP crystal with type Ⅱ critical phase-matching was adopted as intracavity frequency doubler.When the pump power of two diode lasers was 1200W and the repetition rate was 27.2kHz,164W green laser with the pulse width of 130ns was obtained.The optical-optical conversion efficiency was 13.7%.The beam quality factor was M32=10.46,M32=10.59.The result shows that one hundred Watt green laser could be obtained in the two-rod and two Q-switched V-shaped resonator configuration.

1. Department of Physics and Electrical Engineering, Yulin College, Yulin 719000, China;

2. Provincial Key Laboratory of Photo electronic Technology, Institute of Photonics and Photo-technology, Northwest University, Xi'an 710069, China;

3. Department of Physics, Northwest University, Xi'an 710069, China;

4. College of Information Science and Technology, Northwest University, Xi'an 710069, China

Received Date: 2008-02-22

Accepted Date: 2008-04-02

Available Online: 2009-06-25

Abstract: In order to investigate more than one hundred Watt green laser,two serial rods pumped by laser diodes and two Q-switched V-shaped resonators were used.Based on the transmission matrixes,when single and double rods were placed in the cavity respectively,the stable condition of cavity,the light distribution in the folded arm,along with the sagittal and tangential spot size on the nonlinear crystal influenced by the thermal lens effect were analyzed and compared.A high gray tracking resistivity (HGTR)-KTP crystal with type Ⅱ critical phase-matching was adopted as intracavity frequency doubler.When the pump power of two diode lasers was 1200W and the repetition rate was 27.2kHz,164W green laser with the pulse width of 130ns was obtained.The optical-optical conversion efficiency was 13.7%.The beam quality factor was M32=10.46,M32=10.59.The result shows that one hundred Watt green laser could be obtained in the two-rod and two Q-switched V-shaped resonator configuration.

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Reference (13)

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164W LD side-pumped quasi-continuous-wave Nd：YAG/HGTR-KTP green laser

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References

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通讯作者: 陈斌, bchen63@163.com

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