Title :
Microcavity-enhanced surface-emitted second-harmonic generation for ultrafast all-optical signal processing
Author :
Ulmer, Todd G. ; Hanna, Marc ; Washburn, Brian R. ; Ralph, Stephen E. ; SpringThorpe, Anthony J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
By incorporating an integrated microcavity into an optical waveguide structure with vertical quasi-phase-matching, we have realized surface-emitted second-harmonic generation devices that significantly enhance the conversion efficiency for optical pulses in the picosecond and sub-picosecond regimes. We demonstrate both theoretically and experimentally that nonlinear interactions involving short optical pulses can be enhanced by a microcavity, even when the resonance width is substantially narrower than the spectral content of the pulse. The resulting enhancement enables practical signal processing functions such as ultrafast optical time-division demultiplexing at 1.55 μm in multilayer AlGaAs structures
Keywords :
III-V semiconductors; aluminium compounds; demultiplexing; gallium arsenide; high-speed optical techniques; integrated optics; micro-optics; optical harmonic generation; optical information processing; optical multilayers; optical phase matching; optical waveguides; surface phenomena; time division multiplexing; 1.55 micron; AlGaAs; conversion efficiency; integrated microcavity; microcavity-enhanced surface-emitted second-harmonic generation; multilayer AlGaAs structures; nonlinear interactions; optical pulses; optical waveguide structure; picosecond regimes; practical signal processing functions; resonance width; short optical pulses; spectral content; sub-picosecond regimes; surface-emitted second-harmonic generation; ultrafast all-optical signal processing; ultrafast optical time-division demultiplexing; vertical quasi-phase-matching; Integrated optics; Microcavities; Nonlinear optical devices; Nonlinear optics; Optical devices; Optical pulses; Optical signal processing; Optical surface waves; Optical waveguides; Ultrafast optics;
Journal_Title :
Quantum Electronics, IEEE Journal of
