Second-order hyperpolarizability and all-optical-switching of intensity-modulated spatial self-phase modulation in CsPbBr1.5I1.5 perovskite quantum dot
نویسندگان
چکیده
• Characterization of the nonlinear refraction coefficient CsPbBr 1.5 I QD. Investigation averaged second-order hyperpolarizability perovskite Analyses SSPM diffraction symmetry from Demonstration SSPM-mediated all-optical switching. The (CsPbBr ) quantum dots (QDs) was characterized using intensity-dependent spatial self-phase modulation (SSPM). radial intensity variation Gaussian beam displayed profile concentric rings at far-field due to coherent superposition transverse wave vectors with characteristic phases. number as a function input-intensity revealed coefficients QDs. or real part third-order susceptibility concentration QDs which is single vertically asymmetric ring indicates phase distortion optical field heat convection. All-optical switching characteristics attributable intensity-modulated SSPM. input by estimated be ~1.05 MW/m 2 .
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ژورنال
عنوان ژورنال: Optics and Laser Technology
سال: 2021
ISSN: ['0030-3992', '1879-2545']
DOI: https://doi.org/10.1016/j.optlastec.2021.107090