Spatial-Spectral Complexity in Kerr Beam Self-Cleaning

We report on a comprehensive experimental investigation into the spatial-spectral complexity of the laser beam during Kerr-induced beam self-cleaning in graded-index multimode fibers. We demonstrate the self-cleaning of beams using both transform-limited and chirped femtosecond pulses. By utilizing...

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Bibliographic Details
Published inarXiv.org
Main Authors Labaz, Moshe, Sidorenko, Pavel
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 20.03.2024
Subjects
Cleaning
Complexity
Femtosecond pulses
Homogeneity
Imaging techniques
Laser beams
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Summary:We report on a comprehensive experimental investigation into the spatial-spectral complexity of the laser beam during Kerr-induced beam self-cleaning in graded-index multimode fibers. We demonstrate the self-cleaning of beams using both transform-limited and chirped femtosecond pulses. By utilizing the spectrally resolved imaging technique, we examine variations in beam homogeneity during the beam cleanup process and reveal correlations observed among spatial beam profiles at different wavelengths for the various cleaned pulses. Our results significantly advance our understanding of Kerr-induced self-cleaning with chirped ultrafast pulses and offer new possibilities for diverse applications.
ISSN:2331-8422