Modeling beam propagation in a moving nonlinear medium
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929267311378432 |
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| author | Hogan, Ryan Marcucci, Giulia Safari, Akbar Black, A. Nicholas Braverman, Boris Upham, Jeremy Boyd, Robert W. |
| author_facet | Hogan, Ryan Marcucci, Giulia Safari, Akbar Black, A. Nicholas Braverman, Boris Upham, Jeremy Boyd, Robert W. |
| contents | Fully describing light propagation in a rotating, anisotropic medium with thermal nonlinearity requires modeling the interplay between nonlinear refraction, birefringence, and the nonlinear group index. Incorporating these factors into a generalized nonlinear Schrödinger equation and fitting them to recent experimental results reveals two key relationships: the photon drag effect can have a nonlinear component that is dependent on the motion of the medium, and the temporal dynamics of the moving birefringent nonlinear medium create distorted figure-eight-like transverse trajectories at the output. The beam trajectory can be accurately modelled with a full understanding of the propagation effects. Efficiently modeling these effects and accurately predicting the beam's output position has implications for optimizing applications in velocimetry and beam-steering. Understanding the roles of competitive nonlinearities gives insight into the creation or suppression of nonlinear phenomena like self-action effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_04238 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modeling beam propagation in a moving nonlinear medium Hogan, Ryan Marcucci, Giulia Safari, Akbar Black, A. Nicholas Braverman, Boris Upham, Jeremy Boyd, Robert W. Optics Fully describing light propagation in a rotating, anisotropic medium with thermal nonlinearity requires modeling the interplay between nonlinear refraction, birefringence, and the nonlinear group index. Incorporating these factors into a generalized nonlinear Schrödinger equation and fitting them to recent experimental results reveals two key relationships: the photon drag effect can have a nonlinear component that is dependent on the motion of the medium, and the temporal dynamics of the moving birefringent nonlinear medium create distorted figure-eight-like transverse trajectories at the output. The beam trajectory can be accurately modelled with a full understanding of the propagation effects. Efficiently modeling these effects and accurately predicting the beam's output position has implications for optimizing applications in velocimetry and beam-steering. Understanding the roles of competitive nonlinearities gives insight into the creation or suppression of nonlinear phenomena like self-action effects. |
| title | Modeling beam propagation in a moving nonlinear medium |
| topic | Optics |
| url | https://arxiv.org/abs/2403.04238 |