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1 April 2022 Polarization-shaped Bessel beam
Mostafa Hassan, Benjamin Sapaly, Matthieu Lancry, François Courvoisier
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Proceedings Volume PC11987, Laser Resonators, Microresonators, and Beam Control XXIV; PC119870K (2022) https://doi.org/10.1117/12.2609445
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
Bessel beams are important for light-sheet microscopy, optical trapping, nonlinear optics, or laser materials processing. For these applications, it could be very attractive to control polarization along propagation. We demonstrate, for the first time, polarization shaping of an optical pulse along its propagation. We use laser-induced nanogratings to create a polarization-shaping element, which controls the polarization distribution of a diffraction-free Bessel beam. We successfully generated femtosecond Bessel beams with a length exceeding 60 µm for a submicron focal spot diameter, where the axis of the linear polarization continuously rotates from zero up to 180 degrees.
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Mostafa Hassan, Benjamin Sapaly, Matthieu Lancry, and François Courvoisier "Polarization-shaped Bessel beam", Proc. SPIE PC11987, Laser Resonators, Microresonators, and Beam Control XXIV, PC119870K (1 April 2022); https://doi.org/10.1117/12.2609445
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KEYWORDS
Bessel beams
Polarization
Photonics
Nonlinear optics
Optical microscopy
Optical tweezers
Silica
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