Title :
Blue light generated by frequency doubling of laser diode light in a lithium niobate channel waveguide
Author :
Webjörn, Jonas ; Laurell, Fredrik ; Arvidsson, Gunnar
Author_Institution :
Inst. of Opt. Res., Stockholm, Sweden
Abstract :
Blue light was generated in a LiNbO/sub 3/ channel waveguide by frequency doubling radiation from a laser diode in a guided to guided wave interaction, utilizing first-order quasi-phase-matching in a periodically domain inverted structure. A fabrication method that does not depend on the use of titanium was used. A periodic pattern of silicon oxide on the positive c-face of LiNbO/sub 3/ was used in combination with a heat treatment to achieve a periodic outdiffusion and domain reversal in the surface layer. A channel guide was subsequently formed by proton exchange.<>
Keywords :
lithium compounds; optical harmonic generation; optical materials; optical waveguides; optical workshop techniques; LiNbO/sub 3/ channel waveguide; blue light; channel guide; domain reversal; fabrication method; first-order quasi-phase-matching; frequency doubling; heat treatment; laser diode light; periodic outdiffusion; periodic pattern; periodically domain inverted structure; positive c-face; proton exchange; surface layer; Diode lasers; Frequency conversion; Lithium niobate; Optical device fabrication; Optical frequency conversion; Optical waveguides; Silicon; Titanium; Waveguide lasers; Wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
