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Noncritical quasi-phase-matched second harmonic generation in an annealed proton-exchanged LiNbO3 waveguide

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6 Author(s)
Bortz, M.L. ; Focused Res., Sunnyvale, CA, USA ; Field, S.J. ; Fejer, M.M. ; Nam, D.W.
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We report the demonstration of dimensional noncritical phase matching, a phase-matched interaction length exceeding 10 mm, and an internal conversion efficiency of 204%/W for second harmonic generation of 976 nm radiation in a periodically poled, annealed proton-exchanged LiNbO3 waveguide. Using models for the linear and nonlinear optical properties of annealed proton-exchanged LiNbO3 waveguides and the observed ferroelectric domain grating, the phase-matching wavelength was predicted to within several nm and the conversion efficiency to within ≈20% of the measured values. Optimization of waveguide second harmonic generation devices is discussed

Published in:

Quantum Electronics, IEEE Journal of  (Volume:30 ,  Issue: 12 )

Date of Publication:

Dec 1994

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