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Updated: Jun 20, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
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Published on: May 27, 2020

Solitons and two-photon absorption.

Y Silberberg

    Optics Letters
    |September 23, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Weak two-photon absorption causes fundamental solitons to broaden and attenuate gradually. Higher-order solitons split into two fundamental solitons under these conditions, impacting nonlinear optics.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

    Area of Science:

    • Nonlinear Optics
    • Quantum Optics
    • Photonics

    Background:

    • Solitons are self-reinforcing wave packets that maintain their shape while propagating.
    • Two-photon absorption is a nonlinear optical process where two photons are absorbed simultaneously.
    • Understanding soliton propagation dynamics is crucial for optical communications and laser technologies.

    Purpose of the Study:

    • To investigate the influence of weak two-photon absorption on optical soliton propagation.
    • To derive analytical expressions for the evolution of fundamental solitons under two-photon absorption.
    • To characterize the breakup dynamics of higher-order solitons in the presence of two-photon absorption.

    Main Methods:

    • Numerical simulations were employed to model soliton propagation.
    • Perturbation theory was used to derive analytical expressions for soliton parameters.
    • Parameter scans were performed to explore the regime of higher-order soliton breakup.

    Main Results:

    • Fundamental solitons exhibit adiabatic evolution, characterized by predictable broadening and attenuation.
    • Expressions quantifying the rate of broadening and attenuation for fundamental solitons were derived.
    • Higher-order solitons were observed to break into two distinct fundamental solitons across a broad range of initial parameters.

    Conclusions:

    • Weak two-photon absorption leads to predictable, albeit gradual, changes in fundamental soliton behavior.
    • The breakup of higher-order solitons into fundamental solitons is a robust phenomenon under these conditions.
    • These findings have implications for designing optical systems that utilize soliton propagation in the presence of nonlinear absorption.