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9th International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering
Ultrasonic Doppler Methods The ultrasound Doppler method
2013/10/30
On behalf of the organising committee, I am pleased to invite you to come to ISUD-9 to be held in Strasbourg.The ultrasound Doppler method has been successfully established for fluid flow measurements...
Doppler-compensated three-photon electromagnetically induced transparency
Doppler-compensated three-photon electromagnetically transparency Atomic Physics
2012/5/31
We demonstrate Doppler-compensated bright and dark states in a resonant four-level atomic system. The spectral features are the result of electromagnetically induced transparency (EIT) and absorption ...
Deducing radiation pressure on a submerged mirror from the Doppler shift
submerged mirror the Doppler shift Optics
2012/5/29
Radiation pressure on a flat mirror submerged in a transparent liquid, depends not only on the refractive index n of the liquid, but also on the phase angle psi_0 of the Fresnel reflection coefficient...
Interferometric thermometry of a single sub-Doppler cooled atom
Interferometric thermometry single sub-Doppler cooled atom
2012/2/28
Efficient self-interference of single-photons emitted by a sideband-cooled Barium ion is demonstrated. First, the technical tools for performing efficient coupling to the quadrupolar transition of a s...
Doppler cooling to the Quantum limit
Doppler Quantum limit Atomic Physics single scattering events
2011/8/4
Abstract: Doppler cooling on a narrow transition is limited by the noise of single scattering events. It shows novel features, which are in sharp contrast with cooling on a broad transition, such as a...
Sub-Doppler laser cooling of potassium atoms
Sub-Doppler laser potassium atoms Quantum Gases
2011/8/4
Abstract: We investigate sub-Doppler laser cooling of bosonic potassium isotopes, whose small hyperfine splitting has so far prevented cooling below the Doppler temperature. We find instead that the c...
Doppler-free two-photon resonances for atom detection and sum frequency stabilization
Doppler-free two-photon atom
2011/8/29
We investigate the excitation of the 5D5/2 level in Rb atoms using counterpropagating laser beams, which are nearly resonant to the one-photon 5S1/2 !5P3/2 and 5P3/2 ! 5D5/2 transitions, ensuring that...
Ultra-bright biphoton emission from an atomic vapor based on Doppler-free four-wave-mixing and collective emission
atomic vapor Doppler-free four-wave-mixing biphoton emission
2010/4/12
We propose a novel `butterfly' level scheme to generate highly correlated photon pairs from atomic vapors. With multi-photon Doppler-free pumping, background Rayleigh scattering is dipole-forbidden an...
Doppler-free Adiabatic Self-Induced Transparency
Doppler-free Adiabatic Self-Induced Transparency
2010/4/9
We demonstrate that a Doppler broadened two-level medium can be made transparent to a laser pulse by an appropriate adiabatic variation of the laser field amplitude and its nominal detuning. This new ...
Study of the Doppler Broadening of Positron Annihilation Radiation in Silicon
the Doppler Broadening Positron Annihilation Radiation Silicon
2010/10/15
We report the measurement of Doppler broadening annihilation radiation in silicon, using 22Na as a positron source, and two Ge detectors arrangement. The two-dimensional coincidence energy spectrum wa...