Spatial Beam Self-Cleaning in Second-Harmonic Generation

K. Krupa, R. Fona, A. Tonello, A. Labruyère, B. M. Shalaby, S. Wabnitz, F. Baronio, A. B. Aceves, G. Millot, V. Couderc

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

We experimentally demonstrate the spatial self-cleaning of a highly multimode optical beam, in the process of second-harmonic generation in a quadratic nonlinear potassium titanyl phosphate crystal. As the beam energy grows larger, the output beam from the crystal evolves from a highly speckled intensity pattern into a single, bell-shaped spot, sitting on a low energy background. We demonstrate that quadratic beam cleanup is accompanied by significant self-focusing of the fundamental beam, for both positive and negative signs of the linear phase mismatch close to the phase-matching condition.

Язык оригиналаанглийский
Номер статьи7204
Число страниц9
ЖурналScientific Reports
Том10
Номер выпуска1
DOI
СостояниеОпубликовано - 29 апр 2020

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    Krupa, K., Fona, R., Tonello, A., Labruyère, A., Shalaby, B. M., Wabnitz, S., Baronio, F., Aceves, A. B., Millot, G., & Couderc, V. (2020). Spatial Beam Self-Cleaning in Second-Harmonic Generation. Scientific Reports, 10(1), [7204]. https://doi.org/10.1038/s41598-020-64080-7