Difference Frequency Generation by Quasi-Phase Matching in Periodically Intermixed Semiconductor Superlattice Waveguides

Author

Wagner, Sean J. ; Holmes, Barry M. ; Younis, Usman ; Sigal, Iliya ; Helmy, Amr S. ; Aitchison, Stewart J. ; Hutchings, David C.

Author_Institution

Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada

Volume

47

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

834

Lastpage

840

Abstract

Wavelength conversion by difference frequency generation is demonstrated in domain-disordered quasi-phase-matched waveguides. The waveguide structure consisted of a GaAs/AlGaAs superlattice core that was periodically intermixed by ion implantation. For quasi-phase-matching periods of 3.0-3.8 μm, degeneracy pump wavelengths were found by second-harmonic generation experiments for fundamental wavelengths between 1520 and 1620 nm in both type-I and type-II configurations. In the difference frequency generation experiments, output powers up to 8.7 nW were generated for the type-I phase matching interaction and 1.9 nW for the type-II interaction. The conversion bandwidth was measured to be over 100 nm covering the C, L, and U optical communications bands, which agrees with predictions.

Keywords

III-V semiconductors; aluminium compounds; gallium arsenide; ion implantation; optical communication equipment; optical phase matching; optical waveguides; optical wavelength conversion; semiconductor superlattices; C band; GaAs-AlGaAs; L band; U band; difference frequency generation; domain disordered quasiphase matched waveguide; ion implantation; optical communications band; periodically intermixed semiconductor superlattice waveguides; quasi phase matching; superlattice core; wavelength 1520 nm to 1620 nm; wavelength conversion; Gratings; Laser beams; Laser excitation; Optical frequency conversion; Optical waveguides; Wavelength measurement; Difference frequency generation; nonlinear optics; quantum-well intermixing; semiconductor superlattice;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2011.2126562

Filename

5757078