Title :
A novel method for laser-induced periodic domain reversal in LiNbO/sub 3/ [nonlinear optical waveguide]
Author :
Daneshvar, Kasra ; Kang, Dong Hee
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina Univ., Charlotte, NC, USA
Abstract :
An intense laser light in conjunction with a strong localized field is used to reverse the polarity of the ferroelectric domain at the location of a laser beam. The focus beam from an argon laser raises the temperature of a moving z-cut LiNbO/sub 3/ plate close to the Curie point when a bipolar square wave electric field is applied. This technique has been used to construct a nonlinear periodic optical waveguide structure. This waveguide can be used for quasi-phase-matched second-harmonic generation. The applications of such waveguides are well documented in the literature.
Keywords :
electric domains; ferroelectric materials; lithium compounds; optical harmonic generation; optical phase matching; optical waveguides; periodic structures; Curie point; LiNbO/sub 3/; bipolar square wave electric field; ferroelectric domain polarity reversal; focused Ar laser beam; intense laser light; laser-induced periodic domain reversal; moving z-cut LiNbO/sub 3/ plate; nonlinear periodic optical waveguide structure; quasi-phase-matched second-harmonic generation; strong localized field; Biomedical optical imaging; Frequency conversion; Nonlinear optical devices; Nonlinear optics; Optical devices; Optical frequency conversion; Optical harmonic generation; Optical pumping; Optical waveguides; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
