Optical waveguides were written in periodically poled lithium niobate using a femtosecond laser. Fundamental and second harmonic light is guided single mode at 1064 nm and 532 nm. A conversion efficiency of 66% was obtained.
© 2007 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.0230) Optical devices : Optical devices
(230.7370) Optical devices : Waveguides
J. Thomas, J. Burghoff, M. Heinrich, S. Nolte, A. Tünnermann, and A. Ancona, " Quasi-Phase-Matched Frequency Doubling in Femtosecond Laser-Written Waveguides in Lithium Niobate," in Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, OSA Technical Digest (CD) (Optical Society of America, 2007), paper JMC3.