Harnessing second-order optical nonlinearities in compound semiconductors

A. S. Helmy; P. Abolghasem; B. Bijlani

doi:10.1117/12.813036

23 February 2009 Harnessing second-order optical nonlinearities in compound semiconductors

A. S. Helmy, P. Abolghasem, B. Bijlani

Proceedings Volume 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII; 71970Q (2009) https://doi.org/10.1117/12.813036
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

An overview of recent advances in exact phase matching technologies of second order nonlinear optical processes in compound semiconductors is reported. The technique used utilizes dispersion engineering in Bragg reflection waveguides (BRWs) or 1-dimensoinal photonic bandgap structures to achieve phase matching between the interacting waves. One of its distinguishing features in comparison to other techniques is that it does not involve any demanding technological steps such as oxidation, nor does it rely on periodic modulation of the optical properties of the materials used in the propagation direction. This in turn provides phase matching with significantly lower optical losses in comparison to other techniques. Nonlinear conversion efficiency matching what is achievable in periodically poled lithium niobate is obtained for ridge BRWs fabricated in GaAs/AlGaAs. Most notable applications that would benefit from integrable ultrafast second order optical nonlinearities include monolithically integrated optical parametric oscillators, correlated photon pair sources and monolithic tunable frequency conversion elements.

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A. S. Helmy, P. Abolghasem, and B. Bijlani "Harnessing second-order optical nonlinearities in compound semiconductors", Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 71970Q (23 February 2009); https://doi.org/10.1117/12.813036

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KEYWORDS

Waveguides

Phase matching

Cladding

Dispersion

Wave propagation

Nonlinear optics

Compound semiconductors

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