RT Journal Article T1 Extremely high-aspect-ratio ultrafast Bessel beam generation and stealth dicing of multimillimeter thick glass A1 Meyer, Remi A1 Froehly, L. A1 Giust, R. A1 Del Hoyo Muñoz, Jesús A1 Furfaro, L. A1 Billet, C. A1 Courvoisier, F. AB We report on the development of an ultrafast beam shaper capable of generating Bessel beams of high cone angle that maintain a high intensity hot spot with subwavelength diameter over a propagation distance in excess of 8 mm. This generates a high intensity focal region with extremely high aspect ratio exceeding 10 000:1. The absence of intermediate focusing in the shaper allows for shaping very high energies, up to Joule levels. We demonstrate a proof of principle application of the Bessel beam shaper for stealth dicing of thick glass, up to 1 cm. We expect that this high energy Bessel beam shaper will have applications in several areas of high intensity laser physics. PB American Institute of Physics SN 0003-6951 YR 2019 FD 2019-05-23 LK https://hdl.handle.net/20.500.14352/115667 UL https://hdl.handle.net/20.500.14352/115667 LA eng NO Meyer, R.; Froehly, L.; Giust, R.; Del Hoyo, J.; Furfaro, L.; Billet, C.; Courvoisier, F. Extremely High-Aspect-Ratio Ultrafast Bessel Beam Generation and Stealth Dicing of Multi-Millimeter Thick Glass. Applied Physics Letters 2019, 114, 201105, doi:10.1063/1.5096868. NO European Commission NO Région Bourgogne-Franche-Comté (France) NO University of Bourgogne-Franche-Comté DS Docta Complutense RD 6 abr 2025