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Proceedings Paper

Calculation of quasi phasematching in optical parametric GaAs/AlGaAs waveguides
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Paper Abstract

Quasi phasematched domain periods for bulk and waveguide GaAs nonlinear frequency conversion were calculated. Waveguide beam confinement resulted in a decrease in effective refractive index and the magnitude of this index change was found to increase supralinearly with wavelength. Domain periodicity required for a 2.056-μm pumped, 10x10 μm2 GaAs core, Al0.5Ga0.5As cladding waveguide OPO at degeneracy decreased from 60.4 μm for bulk GaAs to 57.9 μm for a rib waveguide and 49.8 μm for a buried waveguide in a GaAs OPO. Careful accounting for waveguide effects is necessary to fabricate a periodic waveguide structure with the desired function.

Paper Details

Date Published: 23 February 2009
PDF: 7 pages
Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 719708 (23 February 2009); doi: 10.1117/12.808035
Show Author Affiliations
Kenneth L. Schepler, Air Force Research Lab. (United States)
Justin B. Spring, U.S. Air Force Academy (United States)


Published in SPIE Proceedings Vol. 7197:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII
Peter E. Powers, Editor(s)

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