Transfer printing of AlGaAs-on-SOI micro-disk resonators for selective mode coupling and low-power non-linear processes

McPhillimy, John and May, Stuart and Klitis, Charalambos and Guilhabert, Benoit and Dawson, Martin D. and Sorel, Marc and Strain, Michael J. (2020) Transfer printing of AlGaAs-on-SOI micro-disk resonators for selective mode coupling and low-power non-linear processes. Optics Letters, 45 (4). pp. 881-884. ISSN 0146-9592

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    Abstract

    The transfer printing of aluminum gallium arsenide (AlGaAs) microdisk resonators onto a silicon-on-insulator (SOI) waveguide platform is demonstrated. The integrated resonators exhibit loaded Q-factors reaching 4 × 10 4, and the vertical assembly approach allows selective coupling to different spatial mode families. The hybrid platform’s nonlinearity is characterized by four-wave mixing with a measured nonlinear coefficient of γ = 325 (Wm) −1, with the devices demonstrating minimal two-photon absorption and free-carrier absorption losses that are inherent to SOI at telecommunications wavelengths.