Title | 4¯-quasi-phase-matched interactions in GaAs microdisk cavities |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | P. S. Kuo, W. Fang, and G. S. Solomon |
Journal | Optics Letters |
Volume | 34 |
Pagination | 3580 |
Date Published | nov |
ISSN | 0146-9592 |
Keywords | 2009, 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. |
URL | http://ol.osa.org/abstract.cfm?URI=ol-34-22-3580 |