TITLE

Second-harmonic generation in two-dimensional periodically poled lithium niobate using second-order quasiphase matching

AUTHOR(S)
Ni, Peigen; Ma, Boqin; Wang, Xuehua; Cheng, Bingying; Zhang, Daozhong
PUB. DATE
June 2003
SOURCE
Applied Physics Letters;6/16/2003, Vol. 82 Issue 24, p4230
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Two-dimensional nonlinear photonic crystals of lithium niobate with square lattices were fabricated. In these crystals, efficient quasiphase-matched second-harmonic generation was demonstrated by using second-order quasiphase matching. As a mode-locked Nd:yttritium-aluminum-garnet laser at 1064 nm with 35 ps pulse was used, we obtained an average power of 0.86 mW at 532 nm with 2.73 mW input, which corresponds to 42% internal conversion efficiency. The variations of second-harmonic output with crystal temperature and incident angle were measured. In addition, the relation between the second-harmonic output and reversed duty cycle was studied. All the experimental results are well consistent with simulations.
ACCESSION #
9987413

 

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