We demonstrate periodic twins propagating with high aspect ratio of 11.2 and 3rd- and 2nd-order QPM SHG of a Nd:YAG laser. The normalized conversion efficiency is 0.63 %/W/cm2 in 2nd-order QPM with 4.9 nsec pulsewidth.
© 2004 Optical Society of America
(160.0160) Materials : Materials
(160.4330) Materials : Nonlinear optical materials
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4000) Optical design and fabrication : Microstructure fabrication
T. Yamada, K. Hayashi, S. Kurimura, N. Yu, K. Kitamura, and M. M. Fejer, "High-aspect-ratio periodical twin structure for QPM SHG in quartz," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2004), paper CThKK1.
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