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4¯-quasi-phase-matched interactions in GaAs microdisk cavities

Title4¯-quasi-phase-matched interactions in GaAs microdisk cavities
Publication TypeJournal Article
Year of Publication2009
AuthorsP. S. Kuo, W. Fang, and G. S. Solomon
JournalOptics Letters
Volume34
Pagination3580
Date Publishednov
ISSN0146-9592
Keywords2009, Harmonic generation and mixing, Semiconductor materials, Semiconductor nonlinear optics including MQW, Single Fellow
Abstract

We describe quasi-phase-matched nonlinear interactions in materials that possess 4¯ symmetry, such as GaAs. 4¯ symmetry together with curved propagation geometries produce quasi phase matching (QPM) without need of external domain inversions. To improve efficiency of nonlinear optical mixing, 4¯-QPM can be combined with resonant microcavities such as whispering-gallery-mode microdisks. All interacting waves must be resonant with the cavity, which leads to stringent tuning requirements. We show tuning behavior for second-harmonic generation in a GaAs microdisk cavity and estimate that, with milliwatt-level external pumping, approximately 0.1% power-conversion efficiency can be obtained with negligible higher-order nonlinear effects.

URLhttp://ol.osa.org/abstract.cfm?URI=ol-34-22-3580