Anisotropic Two-Photon Transition in GaAs/AlGaAs Multiple Quantum Well Waveguides

C. C. Yang; A. Villeneuve; G. I. Stegeman; Cheng-Hui Lin; Hao-Hsiung Lin

doi:10.1364/NLO.1992.PD2

Nonlinear Optics: Materials, Fundamentals, and Applications
Technical Digest Series (Optica Publishing Group, 1992),
paper PD2
•https://doi.org/10.1364/NLO.1992.PD2

Anisotropic Two-Photon Transition in GaAs/AlGaAs Multiple Quantum Well Waveguides

C. C. Yang, A. Villeneuve, G. I. Stegeman, Cheng-Hui Lin, and Hao-Hsiung Lin

Nonlinear Optics 1992

Lahaina, Maui, Hawaii United States
17–21 August 1992
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C. C. Yang, A. Villeneuve, G. I. Stegeman, C. Lin, and H. Lin, "Anisotropic Two-Photon Transition in GaAs/AlGaAs Multiple Quantum Well Waveguides," in Nonlinear Optics: Materials, Fundamentals, and Applications, Technical Digest Series (Optica Publishing Group, 1992), paper PD2.

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Abstract

Two-photon transitions near the absorption edge in a multiple quantum well (MQW) structure are important because, on one hand, they provide information about the energy states involved in the forbidden direct transitions¹ and, on the other hand, the induced Kerr-like optical nonlinearity has potential for ultrafast nonlinear switching applications². In this paper, we report the first direct measurements of the two-photon absorption coefficient β₂ and nonlinear refractive-index n₂ in GaAs/AlGaAs MQW channel waveguides from 1490 to 1660 nm. We observed significant differences between TE and TM modes for both β₂ and n₂.

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