Periodically poled second harmonic green light generation in near-stoichiometric MgO-doped LiNbO3 crystal

YAO Jiang-hong; YAN Bo-xia; CHEN Ya-hui; DENG Hao-liang; CHEN Shao-lin; XU Jing-jun; ZHANG Guang-yin

LASER TECHNOLOGY > 2004 > 28(2): 141-143.

YAO Jiang-hong, YAN Bo-xia, CHEN Ya-hui, DENG Hao-liang, CHEN Shao-lin, XU Jing-jun, ZHANG Guang-yin. Periodically poled second harmonic green light generation in near-stoichiometric MgO-doped LiNbO3 crystal[J]. LASER TECHNOLOGY, 2004, 28(2): 141-143.

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Periodically poled second harmonic green light generation in near-stoichiometric MgO-doped LiNbO3 crystal

1.
Photonics Research Center, College of Physical Science, Nankai University, Tianjin 300071, China;
2.
TEDA Applied Physics College, Nankai University, Tianjin 300060, China

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Received Date: May 22, 2003
Revised Date: November 18, 2003
Published Date: March 24, 2004

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LiNbO3 crystal with different MgO doped concentration were processed by vapor transport equilibration.The processed crystals doped 2%(mole fraction) MgO increased the photoreactive damage resistance by at least 4 orders of magnitude compared with congruent crystal.By applying an external electric field of 4.5kV/mm,we obtained a periodically poled domain structure with a 6.8μm period and 1.0mm thickness in the doped MgO2%(mole fraction) near-stoichioment LiNbO3 crystal.A Q-switched Nd:YAG laser was used as the fundamental beam source at 1.064μm.When input power was 230mW,the green SHG at 0.532μm was obtained with 1.22% conversion efficiency.
- second harmonic generation,
- quasi phase matched,
- near-stoichiometric,
- MgO2doped LiNbO3,
- periodical poling

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Periodically poled second harmonic green light generation in near-stoichiometric MgO-doped LiNbO3 crystal

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