Geometry-dependent two-photon absorption followed by free-carrier absorption in AlGaAs waveguides

• Published in: arXiv.org
• Main Authors: Espinosa, Daniel H G, Harrigan, Stephen R, Awan, Kashif M, Rasekh, Payman, Dolgaleva, Ksenia
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 26.10.2021
• Subjects: Absorption cross sections; Absorptivity; Aluminum gallium arsenides; Design factors; Design parameters; Electric fields; Heterostructures; Nanowires; Parameter estimation; Photon absorption; Photons; Physics - Optics; Strip; Transmittance; Waveguides

Nonlinear absorption can limit the efficiency of nonlinear optical devices. However, it can also be exploited for optical limiting or switching applications. Thus, characterization of nonlinear absorption in photonic devices is imperative. This work used the nonlinear transmittance technique to meas...