Title :
Periodical poling of 3mm-thick MgO:LiNbO3 crystals for high-power nonlinear wavelength conversion
Author :
Ishizuki, H. ; Shoji, Ichiro ; Taira, T.
Author_Institution :
Laser Res. Center for Molecular Sci., Inst. for Molecular Sci., Okazaki, Japan
Abstract :
In this paper, we investigate field poling characteristics and demonstrate periodical poling in 3mm-thick MgO:LN crystals. LiNbO3 (LN) is an attractive material for quasiphase-matching (QPM) devices because of its large nonlinear coefficient. Although periodically poled LN (PPLN) devices can perform many kinds of wavelength conversion such as second harmonic generation, difference frequency generation and optical parametric oscillation, problems about photorefractive damage and high coercive field remain in PPLNs. MgO-doped LN (MgO:LN) has been investigated and developed because of its higher resistance to photorefractive damage and a lower coercive field than that of nondoped LN. Therefore, MgO:LN is a suitable material for large aperture QPM devices for high-power/short-pulse operation.
Keywords :
high-speed optical techniques; lithium compounds; magnesium compounds; niobium compounds; optical harmonic generation; optical materials; optical parametric oscillators; optical phase matching; optical wavelength conversion; 3 mm; LiNbO3:MgO; MgO:LN crystal; MgO:LiNbO3 crystal; attractive material; difference frequency generation; high coercive field; high-power nonlinear wavelength conversion; high-power operation; nonlinear coefficient; optical parametric oscillation; periodical poling; photorefractive damage; quasiphase-matching device; second harmonic generation; short-pulse operation; Crystalline materials; Crystals; Frequency conversion; Nonlinear optical devices; Optical frequency conversion; Optical harmonic generation; Optical materials; Optical wavelength conversion; Photorefractive effect; Photorefractive materials;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1312302
