Abstract
We report the observation of light-enhanced electro-optic spectral tuning in annealed proton-exchanged, asymmetric domain-duty-cycle periodically poled lithium niobate (PPLN) channel waveguides for second-harmonic generation. The spectral tuning rate was increased rapidly from to a saturated value of in a 30%/70% domain-duty-cycle PPLN waveguide when the fundamental pump power near was increased from 0.6 to . The second-harmonic laser power at was identified to be the source enhancing the spectral tuning.
© 2006 Optical Society of America
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