Journal ArticleDOI
Generating radially polarized beams interferometrically.
Reads0
Chats0
TLDR
Two interferometric techniques for converting a linearly polarized laser beam into a radially polarized beam with uniform azimuthal intensity are described.Abstract:
Two interferometric techniques for converting a linearly polarized laser beam into a radially polarized beam with uniform azimuthal intensity are described. The techniques are based on the linear combination of orthogonally polarized beams, which have tailored intensity and phase profiles. Linearly polarized beams with intensity profiles tailored using a modified laser or an apodization filter are combined in separate experiments to produce radially polarized light. A beam with an extinction ratio of −21.7 dB and azimuthal intensity variations of less than ±12% is produced using the modified laser output. The second technique uses circularly polarized light and a unique spiral phase delay plate to produce the required phase profile. When focused, a radially polarized beam has a net longitudinal field useful for particle acceleration and, perhaps, other unique applications.read more
Citations
More filters
Book
Principles of nano-optics
Lukas Novotny,Bert Hecht +1 more
TL;DR: In this paper, the authors proposed a method for propagating and focusing of optical fields in a nano-optics environment using near-field optical probes and probe-sample distance control.
Journal ArticleDOI
Cylindrical vector beams: from mathematical concepts to applications
TL;DR: An overview of the recent developments in the field of cylindrical vector beams is provided in this paper, where the authors also discuss the potential of using these beams in other fields.
Journal ArticleDOI
Focusing of high numerical aperture cylindrical-vector beams.
TL;DR: It is shown that, in the particular case of a tightly focused, radially polarized beam, the polarization shows large inhomogeneities in the focal region, while the azimuthally polarized beam is purely transverse even at very high numerical apertures.
Journal ArticleDOI
Linearly polarized light with axial symmetry generated by liquid-crystal polarization converters
M. Stalder,M Schadt +1 more
TL;DR: It is shown that one can in principle generate fields of any integral order P by cascading such elements and devices that generate P = 1 fields are achromatic and can be used as polarization axis finders or as versatile tools for studying birefringent or polarizing materials.
Journal ArticleDOI
Tailoring of arbitrary optical vector beams
TL;DR: In this article, a robust interferometric method was proposed to generate vector beam modes by diffracting a Gaussian laser beam from a spatial light modulator consisting of a high-resolution reflective nematic liquid crystal display.
References
More filters
Book
Solid-state laser engineering
TL;DR: In this article, the characteristics, design, construction and performance of solid-state lasers are discussed from an industrial perspective, focusing on engineering and practical considerations; phenomenological aspects using models are preferred to abstract mathematical derivations.
Journal ArticleDOI
Diffraction-free beams.
TL;DR: The first experimental investigation of nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space, is reported.
Journal ArticleDOI
Polarization analysis of optical systems
TL;DR: In this article, the authors consider methods suitable for analyzing systems for which the assumption of uniform amplitude and constant polarization state is not valid, and define the basic classes of polarization phenomena and a review of the Jones calculus are included to form a basis for the discussion.
Journal ArticleDOI
A high‐energy, laser accelerator for electrons using the inverse Cherenkov effect
J. R. Fontana,Richard H. Pantell +1 more
TL;DR: In this paper, a laser method for accelerating electrons is described, based on the inverse Cherenkov effect in a gas, where the laser fields are in the form of a cylindrical cone of plane waves on whose axis travel the electrons, with the cone angle and the gas refraction index such that each electron sees constant fields in time.