Dynamic array of dark optical traps
نویسندگان
چکیده
A dynamic array of dark optical traps is generated for simultaneous trapping and arbitrary manipulation of multiple low-index microstructures. The dynamic intensity patterns forming the dark optical trap arrays are generated using a nearly loss-less phase-to-intensity conversion of a phase-encoded coherent light source. Two-dimensional input phase distributions corresponding to the trapping patterns are encoded using a computer-programmable spatial light modulator, enabling each trap to be shaped and moved arbitrarily within the plane of observation. We demonstrate the generation of multiple dark optical traps for simultaneous manipulation of hollow ‘‘air-filled’’ glass microspheres suspended in an aqueous medium. © 2004 American Institute of Physics. @DOI: 10.1063/1.1642752#
منابع مشابه
Two-dimensional lattice of blue-detuned atom traps using a projected Gaussian beam array
We describe a blue-detuned optical lattice for atom trapping which is intrinsically two-dimensional, while providing three-dimensional atom localization. The lattice is insensitive to optical phase fluctuations since it does not depend on field interference between distinct optical beams. The array is created using an arrangement of weakly overlapping Gaussian beams that creates a two-dimension...
متن کاملCavity-enhanced toroidal dipole force traps for dark-field seeking species
Dipole force traps for dark-field seeking states of atoms and molecules require regions of low intensity that are completely surrounded by a brighter optical field. Confocal cavities allow the resonant enhancement of these interesting transverse mode superpositions, and put deep far-off-resonance traps within reach of low-power diode lasers. In this paper, we show how an array of dark-field rin...
متن کاملAnalytical Study of Optical Bi-Stability of a Single-Bus Resonator Based on InGaAs Micro-Ring Array
In this paper, for the first time to our knowledge, we investigate the optical bi-stability in a compact parallel array of micro- ring resonators with 5μm radius, induced by optical nonlinearity. Due to the nature of perfect light confinement, resonance and accumulation process in a ring resonator, optical nonlinear effects, even at small optical power of a few milliwatts in this structure are ...
متن کاملExtending dark optical trapping geometries.
New counterpropagating geometries are presented for localizing ultracold atoms in the dark regions created by the interference of Laguerre-Gaussian laser beams. In particular dark helices, an "optical revolver," axial lattices of rings, and axial lattices of ring lattices of rings are considered and a realistic scheme for achieving phase stability is explored. The dark nature of these traps wil...
متن کاملA microfabrication-based dynamic array cytometer.
We have developed a microfabricated device for use in parallel luminescent single-cell assays that can sort populations upon the basis of dynamic functional responses to stimuli. This device is composed of a regular array of noncontact single-cell traps. These traps use dielectrophoresis to stably confine cells and hold them against disrupting fluid flows. Using quantitative modeling, we have d...
متن کامل