Results 71 to 80 of about 4,074 (195)
Feshbach-Stimulated Photoproduction of a Stable Molecular Condensate [PDF]
, 2002 Photoassociation and the Feshbach resonance are, in principle, feasible means for creating a molecular Bose-Einstein condensate from an already-quantum-degenerate gas of atoms; however, mean-field shifts and irreversible decay place practical constraints
A. G. Truscott +36 more
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Ground-state properties of Ca 2 from narrow-line two-color photoassociation [PDF]
, 2017 By two-color photoassociation of $^{40}$Ca four weakly bound vibrational levels in the Ca$_2$ \Xpot ground state potential were measured, using highly spin-forbidden transitions to intermediate states of the coupled system $^3\Pi_{u}$ and $^3\Sigma^+ _{u}
Evgenij Pachomow +4 more
semanticscholar +1 more source
Feshbach resonance-induced Fano interference in photoassociation [PDF]
Journal of Physics B: Atomic, Molecular and Optical Physics, 2009 We consider photoassociation from a state of two free atoms when the continuum state is close to a magnetic field induced Feshbach resonance and analyze Fano interference in photoassociation. We show that the minimum in photoassociation profiles characterized by the Fano asymmetry parameter $q$ is independent of laser intensity, while the maximum ...
Deb, Bimalendu, Agarwal, G. S.
openaire +2 more sources
Rotational excitations in two-color photoassociation
, 2009 We show that it is possible to excite higher rotational states J > 2 in ultracold photoassociation by two laser fields. Usually higher J states are suppressed in photoassociation at ultracold temperatures in the regime of Wigner threshold laws.
Bimalendu Deb, E. Tiesinga, Jisha Hazra
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Two-photon photoassociation spectroscopy of an ultracold heteronuclear molecule [PDF]
, 2017 We report on two-photon photoassociation (PA) spectroscopy of ultracold heteronuclear LiRb molecules. This is used to determine the binding energies of the loosely bound levels of the electronic ground singlet and the lowest triplet states of LiRb.
S. Dutta +3 more
semanticscholar +1 more source
, 2011 We study the effects of a static electric field on the photoassociation of a heteronuclear atom-pair into a polar molecule. The interaction of permanent dipole moment with a static electric field largely affects the ground state continuum wave function ...
Bimalendu Deb +9 more
core +1 more source
Observation of Bose-enhanced photoassociation products [PDF]
, 2017 We produce molecules using Bose-enhanced Raman photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP) technique on a Bose-Einstein condensate (BEC) to produce more than ultracold molecules. This chemical reaction is only made possible
A. Ciamei +3 more
semanticscholar +1 more source
Photoassociative Spectroscopy of $^{87}$Sr
, 2020 We demonstrate photoassociation (PA) of ultracold fermionic $^{87}$Sr atoms. The binding energies of a series of molecular states on the $^1 ^+_u$ $5s^2\,^1$S$_0+5s5p\,^1$P$_1$ molecular potential are fit with the semiclassical LeRoy-Bernstein model, and PA resonance strengths are compared to predictions based on the known $^1$S$_0+^1$S$_0$ ground ...
Hill, J. C. +6 more
openaire +2 more sources
, 2012 We report the first observation of photoassociation to the 2(1)Sigma(g)(+) state of 85Rb2 . We have observed two vibrational levels (v'=98, 99) below the 5s1/2+5p1/2 atomic limit and eleven vibrational levels (v'=102-112) above it. The photoassociation---
Banerjee, J. +6 more
core +1 more source
Feshbach-optimized photoassociation of ultracold $^6$Li$^{87}$Rb molecules with short pulses
, 2013 Two-color photoassociation of ground state $^6$Li$^{87}$Rb molecules via the $\mathrm{B}^1\Pi$ electronic state using short pulses near a magnetic Feshbach resonance is studied theoretically. A near-resonant magnetic field is applied to mix the hyperfine
Byrd, Jason +3 more
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