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Integrated intracavity quasi-phase-matched second harmonic generation based on periodically poled Nd:LiTaO3

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4 Author(s)
Abedin, Kazi Sarwar ; Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-77, Japan ; Tsuritani, T. ; Sato, Manabu ; Ito, Hiromasa

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Integrated intracavity quasi-phase-matched second harmonic generation (QPM-SHG) has been demonstrated in a periodically domain inverted Nd:LiTaO3 crystal which functions simultaneously as a gain and nonlinear medium. Lasing at 1.082 μm and simultaneous QPM-SHG at 541 nm has been established by pumping near 806 nm. The effect of doping on the domain reversal voltage of LiTaO3 and the photorefractive effect have also been investigated. It is found that optical damage can be avoided by heating above 80 °C. © 1997 American Institute of Physics.

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Applied Physics Letters  (Volume:70 ,  Issue: 1 )