Journal
OPTICS LETTERS
Volume 29, Issue 1, Pages 89-91Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.29.000089
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We demonstrate quasi-phase-matched (QPM) second-harmonic generation (SHG) at the optical communication wavelengths with side-chain polymer waveguides. A ridge waveguide structure is designed to support fundamental mode guiding at both the pump and the second harmonics, leading to a high field overlap integral of the guided modes. The nonlinearity contrast in the +/0 type QPM waveguide is maximized under a QPM poling electrode width of nearly half the coherence length. Using these configurations, we record a normalized SHG efficiency of 2.2% W(-1)cm(-2) in the polymer waveguide. (C) 2004 Optical Society of America.
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