End-pumped Nd:YAG Q-switched laser with high energy and narrow pulse for glass carving

Ming Ling; Guang-yong Jin; Xue-chun Tan; Zhi-chao Wu; Zhu Liang

doi:10.1117/12.830908

21 May 2009 End-pumped Nd:YAG Q-switched laser with high energy and narrow pulse for glass carving

Ming Ling, Guang-yong Jin, Xue-chun Tan, Zhi-chao Wu, Zhu Liang

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72822A (2009) https://doi.org/10.1117/12.830908
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

In order to raise the accuracy of glass carving and improve deep cutting, a novel diode end-pumed solid-state laser is researched. Selecting proper volume of laser crytal, one continue wave laser diode which longitudinally pumped Nd:YAG crystal is performed and an applied optics coupling system is designed with self focusing.Computing with ray trace software and MATLAB software, the best parameter is obtained, so pumping beam is coupled efficiently to Nd:YAG.Used a Cr⁴⁺:YAG crystal with the singnal transmission of 82% and a line plane-concave cavity, nanosecond narrow pulse is gotten. After two thermal-electrical coolers kept the laser to work at constant temperature instead of water cooling, the volume of laser is markedly reduced. The method of thermal-electrical cooling could increase the system efficiency,achieve the effect of low mode output.Experimental results indicate that the maximum laser output energy in 1064 nm is 118mJ,pulse width is 5 ns, conversion efficiency from light to light is 15.7% under the condition of the incident power of 5 W and the diameter of the output laser spot is less than 1 mm. This end-pumped Nd:YAG Q-switched laser with the light output of high quality and long life, which has 0.01 mm accuracy after lens focusing can satisfy the glass carving with higher precision, rapid speed as well as easy control. It can be used in carving all kinds of glass and replace current CO₂ laser.

Citation Download Citation

Ming Ling, Guang-yong Jin, Xue-chun Tan, Zhi-chao Wu, and Zhu Liang "End-pumped Nd:YAG Q-switched laser with high energy and narrow pulse for glass carving", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72822A (21 May 2009); https://doi.org/10.1117/12.830908

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