Results 51 to 60 of about 192,487 (281)
Numerical Analysis of Optical Trapping Force Affected by Lens Misalignments
Photonics, 2021 Geometrical optics approximation is a classic method for calculating the optical trapping force on particles whose sizes are larger than the wavelength of the trapping light.
Hanlin Zhang +3 more
doaj +1 more source
Nanoscale Optical Trapping by Means of Dielectric Bowtie
Photonics, 2022 Plasmonic and dielectric tweezers represent a common paradigm for an innovative and efficient optical trapping at the micro/nanoscale. Plasmonic configurations provide subwavelength mode confinement, resulting in very high optical forces, at the expense ...
Giuseppe Brunetti +3 more
doaj +1 more source
A two-dimensional lattice of blue detuned atom traps using a projected Gaussian beam array
, 2013 We describe a new type of blue detuned optical lattice for atom trapping which is intrinsically two dimensional, while providing three-dimensional atom localization.
Isenhower, L. +6 more
core +1 more source
Optically programmable excitonic traps [PDF]
Scientific Reports, 2013 With atomic systems, optically programmed trapping potentials have led to remarkable progress in quantum optics and quantum information science. Programmable trapping potentials could have a similar impact on studies of semiconductor quasi-particles, particularly excitons.
Mathieu Alloing +3 more
openaire +2 more sources
, 2016 We demonstrated a frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms.
Ando, S. +24 more
core +1 more source
Plasmon-assisted optical trapping and anti-trapping
Light: Science & Applications, 2016 The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied science. Nanophotonic and plasmonic structures enable superior performance in optical trapping via highly confined near-fields.
Ivinskaya, Aliaksandra +5 more
openaire +2 more sources
Optical Trapping of Absorbing Particles [PDF]
, 1998 Radiation pressure forces in a focussed laser beam can be used to trap microscopic absorbing particles against a substrate. Calculations based on momentum transfer considerations show that stable trapping occurs before the beam waist, and that trapping is more effective with doughnut beams.
Rubinsztein-Dunlop, H. +3 more
openaire +4 more sources
Scientific Reports, 2022 Recent theoretical and experimental studies have shed light on how laser trapping dynamics under femtosecond pulsed excitation are fine-tuned by optical and thermal nonlinearities.
Anita Devi, Sumit Yadav, Arijit K. De
doaj +1 more source
Optical trapping of nanoparticles by full solid-angle focusing
, 2016 Optical dipole-traps are used in various scientific fields, including classical optics, quantum optics and biophysics. Here, we propose and implement a dipole-trap for nanoparticles that is based on focusing from the full solid angle with a deep ...
Bramati, Alberto +5 more
core +1 more source
Low-cost optical manipulation using hanging droplets of PDMS [PDF]
, 2015 We propose and demonstrate a low-cost optical micromanipulation system that makes use of simple microfrabricated components coupled to a smartphone camera for imaging. Layering hanging droplets of polydimethylsiloxane (PDMS) on microscope coverslips, and
Ashkin +20 more
core +3 more sources