K. Mizuuchi et K. Yamamoto, GENERATION OF 340-NM LIGHT BY FREQUENCY-DOUBLING OF A LASER-DIODE IN BULK PERIODICALLY POLED LITAO3, Optics letters, 21(2), 1996, pp. 107-109
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 uni
form periodicity and optimum duty cycle was fabricated over a 10-mm in
teraction length in a 200-mu m-thick LiTaO3 substrate. A 340-nm wavele
ngth of harmonic ultraviolet light was generated in a single pass thro
ugh the domain-inverted structure. (C) 1996 Optical Society of America