Abstract
In this paper, we report on the analytical study of a first-order quasi-phase-matched structure based on a periodically switched nonlinearity. The general average equations describing parametric wave interaction for this structure are obtained. The theoretical results are then used to analyze the special case of a device based on a semiconductor AlxGa1-xAs waveguide for efficient frequency doubling in the mid-infrared to the far-infrared range. The necessary conditions to obtain an optimal configuration are discussed in both continuous wave and femtosecond-pulse regimes. Our analysis indicates that the conversion efficiency obtained should significantly exceed the efficiency obtained with a periodically poled lithium niobate crystal at long wavelengths. Finally, we include the preliminary results of the experimental demonstration of a waveguide device based on alternating domains of GaAs and Al0.4Ga0.6As.
Original language | English |
---|---|
Pages (from-to) | 1122-1130 |
Number of pages | 9 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 40 |
DOIs | |
Publication status | Published - Aug 2004 |
Keywords
- nonlinear optics
- parametric devices
- quasi-phase matching
- second-harmonic generation
- ultrafast optics
- MATCHED 2ND-HARMONIC GENERATION
- ORIENTATION-PATTERNED GAAS
- ALGAAS WAVE-GUIDES
- ION-IMPLANTATION
- LITHIUM-NIOBATE
- POLED LINBO3
- BLUE-LIGHT
- ALXGA1-XAS
- CRYSTAL
- SUSCEPTIBILITY