Generation of 340-nm light by frequency doubling of a laser diode in bulk periodically poled LiTaO(3).

@article{Mizuuchi1996GenerationO3,
  title={Generation of 340-nm light by frequency doubling of a laser diode in bulk periodically poled LiTaO(3).},
  author={Kiminori Mizuuchi and Kazuhisa Yamamoto},
  journal={Optics letters},
  year={1996},
  volume={21 2},
  pages={107-9}
}
Frequency doubling of a 680-nm laser diode in periodically poled LiTaO(3) is presented. By selective proton exchange followed by high-voltage pulse application, a second-order periodic domain inversion having uniform periodicity and optimum duty cycle was fabricated over a 10-mm interaction length in a 200-microm-thick LiTaO(3) substrate. A 340-nm wavelength of harmonic ultraviolet light was generated in a single pass through the domain-inverted structure.