Abstract
Passively Q-switched microchip lasers are very attractive for several applications, such as microprocessing, MALDI spectroscopy, LIBS, LIDAR, etc., because of their very simple, compact and rugged structure [1]. Because of their small cavity length, microchip lasers can provide sub-nanosecond pulse width, resulting in high peak power even at small pulse energy. We have used this feature to generate the second, third, fourth and ninth harmonic of Nd:YAG with very high nonlinear conversion efficiency [2-4].
© 2015 IEEE
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