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2 March 2020 Laser induced modifications in transparent materials using azimuthally modulated axicon beams
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Abstract
Nondiffracting beams are known for their long line of focus, which has various applications in laser materials processing. Zeroth order Bessel beam is usually generated with an axicon and has a distinct circular spatial spectra. The nature of higher order Bessel beams, elliptical and parabolic nondiffracting beams is also conical and their spatial spectra have their own azimuthal modulation. We study numerically and verify experimentally generation of vortical Bessel beams, their superpositions along with elliptical and parabolical beams using an axicon. Laser induced modifications in glasses for various durations and beam powers using generated pulsed beams are analyzed.
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Paulius Slevas, Sergej Orlov, Ernestas Nacius, Orestas Ulcinas, Pavel Gotovski, Justas Baltrukonis, and Vytautas Jukna "Laser induced modifications in transparent materials using azimuthally modulated axicon beams", Proc. SPIE 11267, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXV, 112670B (2 March 2020); https://doi.org/10.1117/12.2546580
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