28 April 2016 Self-organized light bullets in type-I intracavity second-harmonic generation
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We study the formation of three-dimensional structures in type-I intracavity second harmonic generation model where polarization degrees of freedom due to the birefringence of the χ(2) crystal is not considered. The device consists of an optical cavity filled with a quadratic nonlinear material and driven by an external beam at the fundamental frequency. The transmitted part of this field is coupled into the cavity where it undergoes second-harmonic conversion. These dissipative structures consist of regular or localized 3D lattices of bright spots travelling at the group velocity of light in the material. We show evidence of stable three dimensional structures such as stripes and cylinders.
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S. Blaha, S. Blaha, E. Averlant, E. Averlant, K. Panajotov, K. Panajotov, M. Tlidi, M. Tlidi, "Self-organized light bullets in type-I intracavity second-harmonic generation", Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 989227 (28 April 2016); doi: 10.1117/12.2230311; https://doi.org/10.1117/12.2230311

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