Spatial characterization of Bessel-like beams for strong-field physics
- Kansas State Univ., Manhattan, KS (United States). J. R. Macdonald Lab.
- Kansas State Univ., Manhattan, KS (United States). Dept. of Industrial and Manufacturing Systems
- Ecole Centrale de Marseille, Marseille (France)
We present a compact, simple design for the generation and tuning of both the spot size and effective focal length of Bessel-like beams. In particular, this setup provides an important tool for the use of Bessel-like beams with high-power, femtosecond laser systems. Using a shallow angle axicon in conjunction with a spherical lens, we show that it is possible to focus Bessel-like modes to comparable focal spot sizes to sharp axicons while maintaining a long effective focal length. The resulting focal profiles are characterized in detail using an accurate high dynamic range imaging technique. Quantitatively, we introduce a metric (R0.8) which defines the spot-size containing 80% of the total energy. Our setup overcomes the typical compromise between long working distances and small spot sizes. This is particularly relevant for strong-field physics where most experiments must operate in vacuum.
- Research Organization:
- Krell Univ., Ames, IA (United States); Kansas State Univ., Manhattan, KS (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF)
- Grant/Contract Number:
- FG02-86ER13491
- OSTI ID:
- 1465202
- Alternate ID(s):
- OSTI ID: 1418638
- Journal Information:
- Optics Express, Vol. 25, Issue 3; ISSN 1094-4087
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Non-diffraction-length, tunable, Bessel-like beams generation by spatially shaping a femtosecond laser beam for high-aspect-ratio micro-hole drilling
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journal | January 2018 |
Lens-axicon separation to tailor aberration free focused Bessel-Gaussian beams in the paraxial regime
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journal | January 2019 |
Vortex γ rays from scattering laser bullets off ultrarelativistic electrons
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journal | January 2020 |
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