Highly efficient SHG in buried waveguides formed using annealed and reverse proton exchange in PPLN

Optical frequency mixers use near-degenerate three-wave mixing in guided-wave quasi-phasematched interactions, where the waveguides were made by annealed proton exchange (APE) in periodically poled lithium niobate (PPLN). We present measurements of linear and nonlinear optical properties of buried w...

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Bibliographic Details
Main Authors: Parameswaran, K.R., Route, R.K., Kurz, J.R., Roussev, R.V., Fejer, M.M., Fujimura, M.
Format: Conference Proceeding
Language:English
Subjects:
Annealing
Frequency
Image converters
Lithium niobate
Nonlinear optics
Optical harmonic generation
Optical mixing
Optical tuning
Optical waveguides
Protons
Online Access:Request full text
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Summary:Optical frequency mixers use near-degenerate three-wave mixing in guided-wave quasi-phasematched interactions, where the waveguides were made by annealed proton exchange (APE) in periodically poled lithium niobate (PPLN). We present measurements of linear and nonlinear optical properties of buried waveguides formed by APE followed by reverse proton exchange in PPLN. The symmetry of the buried waveguides results in a four-fold improvement in conversion efficiency over that of APE guides. A spatial mode image is presented, along with a second harmonic generation tuning curve, where a peak efficiency of 150%/W-cm/sup 2/ is observed.
ISSN:1092-8081
2766-1733
DOI:10.1109/LEOS.2001.969033