|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|
|Keywords||2009, Harmonic generation and mixing, Semiconductor materials, Semiconductor nonlinear optics including MQW, Single Fellow|
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.
4¯-quasi-phase-matched interactions in GaAs microdisk cavities
Subscribe to A Quantum Bit
Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...
Sign Up Now
Sign up to receive A Quantum Bit in your email!