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Second-harmonic generation in a doubly resonant semiconductor microcavity.

C Simonneau, J P Debray, J C Harmand

|January 12, 2008

Summary

We demonstrate efficient second-harmonic generation using a novel semiconductor microcavity. This technology utilizes dispersion-engineered mirrors for quasi-phase matching in nonlinear optics.

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Area of Science:

Nonlinear Optics
Semiconductor Physics
Photonics

Background:

Semiconductor microcavities are crucial for nonlinear optical processes.
Efficient second-harmonic generation (SHG) is vital for frequency conversion applications.
Traditional Bragg reflectors face limitations in broadband applications.

Purpose of the Study:

To demonstrate second-harmonic generation in a doubly resonant semiconductor microcavity.
To engineer novel dual-wavelength mirrors accounting for dispersion.
To achieve quasi-phase matching by controlling phase addition at reflection.

Main Methods:

Fabrication of a monolithic AlGaAs microcavity.
Design of dispersion-engineered AlGaAs/AlAs dual-wavelength mirrors.
Utilizing quasi-phase matching by compensating dephasing through phase addition.

Main Results:

Successful demonstration of second-harmonic generation.
The microcavity exhibited doubly resonant behavior.
Engineered mirrors provided effective phase compensation for quasi-phase matching.

Conclusions:

The developed semiconductor microcavity enables efficient nonlinear frequency conversion.
Dispersion engineering of mirrors is key for achieving quasi-phase matching.
This work advances the development of integrated photonic devices for nonlinear optics.