Observation of continuous-wave second-harmonic generation in semiconductor waveguide directional couplers | Zendy

Po Dong | Zendy; Jeremy Upham | Zendy; A. S. Jugessur | Zendy; Andrew G. Kirk | Zendy

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Observation of continuous-wave second-harmonic generation in semiconductor waveguide directional couplers

Author(s) -

Po Dong,

Jeremy Upham,

A. S. Jugessur,

Andrew G. Kirk

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.002256

Subject(s) - optics , second harmonic generation , power dividers and directional couplers , waveguide , harmonic , semiconductor , coupled mode theory , resonance (particle physics) , nonlinear optics , range (aeronautics) , energy conversion efficiency , physics , optoelectronics , materials science , refractive index , acoustics , laser , atomic physics , composite material

We report the observation of continuous-wave second-harmonic generation in waveguide directional couplers. We employ a GaAs/AlGaAs system and observe four resonance peaks in a ~15nm spectral range, with a maximal conversion efficiency of 1.6%W(-1)cm(-2). This observation is theoretically explained by the coupled-mode theory. This new configuration has the potential to open a new range of applications for nonlinear frequency conversion.

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