Proceedings ArticleDOI
Generation of Laguerre Gaussian beams using spiral phase diffractive elements fabricated on optical fiber tips using focused ion beam milling
R. S. Rodrigues Ribeiro,R. S. Rodrigues Ribeiro,Pabitra Dahal,Ariel Guerreiro,Pedro A. S. Jorge,Jaime Viegas +5 more
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TLDR
In this paper, spiral phase lenses fabricated on the tip of single mode optical fibers are reported, which allow tailoring the fundamental guided mode, a Gaussian beam, into a Laguerre - Gaussian profile without using additional optical elements.Abstract:
In this work, spiral phase lenses fabricated on the tip of single mode optical fibers are reported. This allows tailoring the
fundamental guided mode, a Gaussian beam, into a Laguerre - Gaussian profile without using additional optical
elements. The lenses are fabricated using Focused Ion Beam milling, enabling high resolution in the manufacturing
process. The phase profiles are evaluated and validated using an implementation of the Finite Differences Time Domain.
The output optical intensity profiles matching the numerical simulations are presented and analyzed. Finally, results on
cell trapping and manipulation are briefly described.read more
Citations
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Proceedings ArticleDOI
Photonics on a fiber for wavefront manipulation
Alexander Koshelev,Giuseppe Carlo Calafiore,Carlos Pina-Hernandez,Frances I. Allen,Scott Dhuey,Simone Sassolini,Edward Wong,Paul Lum,Stefano Cabrini,Keiko Munechika +9 more
TL;DR: In this article, a method to fabricate 3D free-form photonic structures directly on the optical fiber using nanoimprint Lithography is presented. But the method is limited to the case of single-input single-output (SISO) devices.
Proceedings ArticleDOI
Nanostencil lithography with scanning optical fiber tip
TL;DR: In this article, a nanostencil inscribed on an optical fiber tip is presented, with features as small as 160 nm beign obtained, replicating the original stencil with excellent agreement.
References
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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
Observation of a single-beam gradient force optical trap for dielectric particles
TL;DR: Optical trapping of dielectric particles by a single-beam gradient force trap was demonstrated for the first reported time, confirming the concept of negative light pressure due to the gradient force.
Journal ArticleDOI
Tweezers with a twist
Miles J. Padgett,Richard Bowman +1 more
TL;DR: The fact that light carries both linear and angular momentum is well-known to physicists as discussed by the authors, and one application of the linear momentum of light is for optical tweezers, in which the refraction of a laser beam through a particle provides a reaction force that draws the particle towards the centre of the beam.
Journal ArticleDOI
Mechanical Detection and Measurement of the Angular Momentum of Light
TL;DR: In this article, the electromagnetic theory of the torque exerted by a beam of polarized light on a doubly refracting plate which alters its state of polarization is summarized, and the results of about 120 determinations by two observers working independently show the magnitude and sign of the effect to be correct and show that it varies as predicted by the theory with each of three experimental variables which could be independently adjusted.
Journal ArticleDOI
The wave motion of a revolving shaft, and a suggestion as to the angular momentum in a beam of circularly polarised light
TL;DR: In this article, it was shown that the wave length of a spiral of constant pitch can be expressed as the length of the turn of a screw along the axis of the spiral.