Nonlinear focal shift in an ultraintense light beam focused by a lens in air

Adrián Aupart-Acosta; Jesús Garduño-Mejía; Martha Rosete-Aguilar; Oscar G. Rodríguez-Herrera; Camilo Ruiz Mendez

doi:10.1117/12.2675758

28 September 2023 Nonlinear focal shift in an ultraintense light beam focused by a lens in air

Adrián Aupart-Acosta, Jesús Garduño-Mejía, Martha Rosete-Aguilar, Oscar G. Rodríguez-Herrera, Camilo Ruiz Mendez

Proceedings Volume 12664, Optical Modeling and Performance Predictions XIII; 126640B (2023) https://doi.org/10.1117/12.2675758
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The modeling of a Gaussian beam focused by a lens in air is presented assuming its waist is located at the lens. We study the nonlinear focal shift for ultraintense light beams where the Kerr effect is unavoidable. The modeling assumes that the propagation of the beam through the lens is linear and that the Kerr effect only becomes evident near the focal region of the lens. We will show that this approximation is valid for thin focusing lenses with a Fresnel number Nω > 8.17 and a truncation parameter α > 12.76. Under this approximation, we show that for input powers below the critical power, there is a shift of the focal point and that the nonlinear focal point moves further away from the lens as the input power increases.

Conference Presentation

Citation Download Citation

Adrián Aupart-Acosta, Jesús Garduño-Mejía, Martha Rosete-Aguilar, Oscar G. Rodríguez-Herrera, and Camilo Ruiz Mendez "Nonlinear focal shift in an ultraintense light beam focused by a lens in air", Proc. SPIE 12664, Optical Modeling and Performance Predictions XIII, 126640B (28 September 2023); https://doi.org/10.1117/12.2675758

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