Results 261 to 270 of about 441,106 (295)
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Tight focusing polychromatic structured light
Laser Beam Shaping XXI, 2021Manuel F. Ferrer-Garcia +4 more
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Tight focusing of radially polarized Gaussian and Bessel-Gauss beams
Optics Letters, 2007We examine the effects of tightly focusing a radially polarized beam with uniform, Gaussian, or Bessel-Gauss pupil functions. The resulting FWHM is smallest for the case of a uniform amplitude profile, while the Bessel-Gauss beam results in the largest FWHM.
Yew, E.Y.S., Sheppard, C.J.R.
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Tight Focusing of Fractional Ellipse Field Polarization Singularities
Frontiers in Optics + Laser Science 2024 (FiO, LS)We study the tight focusing of fractional ellipse field polarization singularities. For these optical fields, the strengths of transverse components at the focal plane depend on the value of the orbital angular momentum of the vortex beam.
Sushanta Kumar Pal, Leslie A. Rusch
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Tight focusing of femtosecond elliptically polarised vortex light pulses
Chinese Physics B, 2011This paper studies the tight focusing properties of femtosecond elliptically polarised vortex light pulses. Based on Richards—Wolf vectorial diffraction integral, the expressions for the electric field, the velocity of the femtosecond light pulse and the total angular momentum of focused pluses are derived.
Li-Min Hua +3 more
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Tight focusing properties of radially polarized Lorentz–Gaussian beam
Optik, 2014Abstract Focusing properties of radially polarized Lorentz–Gauss beam with one on-axis optical vortex was investigated by vector diffraction theory. Results show that intensity distribution in the focal region can be altered considerably by charge number of the optical vortex and the beam parameters.
R.C. Saraswathi +3 more
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High-field harmonic generation in the tight-focusing limit
Journal of the Optical Society of America B, 1996We report measurements of seventh-harmonic generation in xenon, using a femtosecond Ti:sapphire laser operating at ∼763 nm, at intensities of as much as 2 × 1014 W/cm2. Several atomic levels in xenon are nearly resonant with the seventh harmonic; as a consequence, the phase mismatch exhibits strong variations as a function of frequency.
D. M. Mittleman +5 more
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Boosting MIR to THz conversion with tight focusing
2022 International Conference Laser Optics (ICLO), 2022I.A. Nikolaeva +3 more
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Paracellular permeability and tight junction regulation in gut health and disease
Nature Reviews Gastroenterology and Hepatology, 2023Arie Horowitz +2 more
exaly
Filamentation of femtosecond laser pulses under tight focusing
2021Andrey Ionin +2 more
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