Results 41 to 50 of about 49,768 (287)
Evaporative cooling by pulse width modulation (PWM) of optical dipole traps
Physical Review ResearchWe introduce a method for cooling atoms in an optical dipole trap using pulse-width modulation (PWM) technique, without reducing the laser power of the dipole trap. The PWM technique involves digital modulation of the trap at a fixed frequency.
S. Sagar Maurya +6 more
doaj +1 more source
Laser frequency stabilization using a commercial wavelength meter
, 2018 We present the characterization of a laser frequency stabilization scheme using a state-of-the-art wavelength meter based on solid Fizeau interferometers. For a frequency-doubled Ti-sapphire laser operated at 461 nm, an absolute Allan deviation below $10^
Chen, Peng +7 more
core +1 more source
Cooling atomic motion with quantum interference [PDF]
, 2002 We theoretically investigate the quantum dynamics of the center of mass of trapped atoms, whose internal degrees of freedom are driven in a $\Lambda$-shaped configuration with the lasers tuned at two-photon resonance.
A. Aspect +30 more
core +3 more sources
Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere
Advanced Engineering Materials, EarlyView.A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz +4 more
wiley +1 more source
Single-atom trapping and transport in DMD-controlled optical tweezers
New Journal of Physics, 2018 We demonstrate the trapping and manipulation of single neutral atoms in reconfigurable arrays of optical tweezers. Our approach offers unparalleled speed by using a Texas instruments digital micro-mirror device as a holographic amplitude modulator with a
Dustin Stuart, Axel Kuhn
doaj +1 more source
Optical transfer cavity stabilization using current-modulated injection-locked diode lasers [PDF]
, 2006 It is demonstrated that RF current modulation of a frequency stabilized injection-locked diode laser allows the stabilization of an optical cavity to adjustable lengths, by variation of the RF frequency.
Hall J. L. +3 more
core +2 more sources
Fast and Robust Laser Cooling of Trapped Systems
Physical Review Letters, 2010 We present a robust and fast laser cooling scheme suitable for trapped ions, atoms, or cantilevers. Based on quantum interference, generated by a special laser configuration, it is able to rapidly cool the system such that the final phonon occupation vanishes to zeroth order in the Lamb-Dicke parameter in contrast to existing cooling schemes ...
Cerrillo Moreno, Javier +2 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Grating magneto-optical traps with complicated level structures
New Journal of Physics, 2023 We study the forces and optical pumping within grating magneto-optical traps (MOTs) operating on transitions with non-trivial level structure. In contrast to the standard six-beam MOT configuration, rate equation modeling predicts that the asymmetric ...
Daniel S Barker +6 more
doaj +1 more source
Transport of Atom Packets in a Train of Ioffe-Pritchard Traps
, 2006 We demonstrate transport and evaporative cooling of several atomic clouds in a chain of magnetic Ioffe-Pritchard traps moving at a low speed ($
A. Couvert +6 more
core +1 more source