Journal ArticleDOI
High-order Laguerre-Gaussian laser modes for studies of cold atoms
TLDR
In this paper, high-order Laguerre-Gaussian (LG) laser modes at 780 nm from a simple external-cavity diode laser are demonstrated.About:
This article is published in Optics Communications.The article was published on 1998-11-15. It has received 131 citations till now. The article focuses on the topics: Laser & Laser cooling.read more
Citations
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Journal ArticleDOI
Controlled rotation of optically trapped microscopic particles.
Lynn Paterson,Michael P. MacDonald,Jochen Arlt,Wilson Sibbett,Peter E. Bryant,Kishan Dholakia +5 more
TL;DR: In this paper, the authors demonstrate controlled rotation of optically trapped objects in a spiral interference pattern, which is generated by interfering an annular shaped laser beam with a reference beam.
Book ChapterDOI
Chapter 4 - Singular optics
M.S. Soskin,M.V. Vasnetsov +1 more
TL;DR: In this paper, an isolated dark ring is created within a light beam, with an analytical description of the field, and a screw wave-front dislocation has a feature that the spatial structure of the wave front has the form of a helicoid around the dislocation axis.
Journal ArticleDOI
Three-dimensional structure and multistable optical switching of triple-twisted particle-like excitations in anisotropic fluids
TL;DR: These localized chiro-elastic particle-like excitations--dubbed 'triple-twist torons'--are generated by vortex laser beams and embed the localized three-dimensional twist into a uniform background.
Journal ArticleDOI
Generation of high-quality higher-order Laguerre-Gaussian beams using liquid-crystal-on-silicon spatial light modulators
TL;DR: Correlation analyses between observed beam patterns and theoretical mode profiles reveal that higher beam quality is achieved for output LG beams generated from a top-hat input beam than from a Gaussian input beam.
Journal ArticleDOI
Optical vortex trap for resonant confinement of metal nanoparticles
TL;DR: This letter experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region.
References
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Journal ArticleDOI
Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes.
TL;DR: Laser light with a Laguerre-Gaussian amplitude distribution is found to have a well-defined orbital angular momentum and an astigmatic optical system may be used to transform a high-order LaguERre- Gaussian mode into aHigh-order Hermite-Gaussia mode reversibly.
Journal ArticleDOI
Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase Singularity
TL;DR: Black or reflective particles can be trapped in the dark central minimum of a doughnut laser beam produced using a high efficiency computer generated hologram to carry angular momentum transferred from the central phase singularity beam.
Journal ArticleDOI
Astigmatic laser mode converters and transfer of orbital angular momentum
TL;DR: In this paper, a mode converter based on the Gouy phase was proposed to transform a Hermite-gaussian mode of arbitrarily high order to a Laguerre-Gaussian mode and vice versa.
Journal ArticleDOI
Mechanical equivalence of spin and orbital angular momentum of light: an optical spanner.
TL;DR: It is shown that the spin angular momentum of +/-?per photon associated with circularly polarized light can add to, or subtract from, the orbital angular momentum to give a total angular momentum.
Journal ArticleDOI
Novel Optical Trap of Atoms with a Doughnut Beam
TL;DR: In this article, a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition was used to trap neutral atoms in the dark core of the doughnut beam with the help of two additional laser beams.