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Applications of Acoustic Waves in Micro-Droplet Technologies. [PDF]

open access: yesBiosensors (Basel)
Liu J   +6 more
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Reconstruction of orbital angular momentum eigenstates of light. [PDF]

open access: yesNat Commun
Li L   +6 more
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Structure of Optical Vortices

Physical Review Letters, 2003
Helical modes of light can be focused into toroidal optical traps known as optical vortices, which are capable of localizing and applying torques to small volumes of matter. Measurements of optical vortices created with the dynamic holographic optical tweezer technique reveal an unsuspected dependence of their structure and angular momentum flux on ...
Jennifer E, Curtis, David G, Grier
openaire   +2 more sources

Modulated optical vortices

Optics Letters, 2003
Single-beam optical gradient force traps created by focusing helical modes of light are known as optical vortices. Modulating the helical pitch of such a mode's wave front yields a new class of optical traps whose dynamically reconfigurable intensity distributions provide new opportunities for controlling motion in mesoscopic systems. An implementation
Jennifer E, Curtis, David G, Grier
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Plasmonic tomography of optical vortices

Optics Letters, 2010
We present a method for analyzing the wavefront of optical vortices that does not involve interferometry but rather uses surface plasmon polaritons (SPPs). We employ a subwavelength slit in a gold film to cut slices from an optical vortex beam and measure the diffraction of the generated SPPs by scattering them off a second slit.
Philip F, Chimento   +2 more
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Femtosecond Optical Vortices in Air

Physical Review Letters, 2005
We examine the robustness of ultrashort optical vortices propagating freely in the atmosphere. We first approximate the stability regions of femtosecond spinning pulses as a function of their topological charge. Next, we numerically demonstrate that atmospheric optical vortices are capable of conveying high power levels in air over hundreds of meters ...
Antoine, Vinçotte, Luc, Bergé
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Nonlinear Optical Vortices

Nonlinear Optics: Materials, Fundamentals, and Applications, 1992
Dark soliton stripes (DSS’s) and grids were recently discovered in the cross-section of a laser beam [1] which propagates through a self-defocusing medium. Now we find that a dark soliton stripe can spawn optical vortex pairs of opposite topological charge when subjected to transverse modulations whose period exceeds the soliton size.
G. A. Swartzlander, C. T. Law
openaire   +1 more source

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