Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physics Letters A

Improved intensity-gradient cooling of alkali atoms in pyramidal-hollow-beam gravito-optical trap

Jianping Yin, Weijian Gao, Yuzhu Wang, Yiqiu Wang

Published Sep 1, 2001• 10 citations
Publisher
DOI
10.1016/s0375-9601(01)00304-8

Related papers

Gravito-optical trap for cold atoms with doughnut-hollow-beam cooling

Jianping Yin, Yifu Zhu, Yuzhu Wang

Physics Letters A•Nov 1, 1998•14 citations

Dark-hollow-beam gravito-optical atom trap above an apex of a hollow optical fibre

Jianping Yin, Yifu Zhu

Optics Communications•Jul 1, 1998•26 citations

Evaporative cooling of cesium atoms in the gravito-optical surface trap

M. Hammes, D. Rychtarik, Rudolf Grimm

arXiv:physics/0012058•Comptes Rendus de l Académie des Sciences - Series IV - Physics-Astrophysics•Jun 1, 2001•4 citations

Pyramidal-hollow-beam dipole trap for alkali atoms

Yin Jian-Ping, Gao Wei-jian, Wang Yu-Zhu +2 more

We propose a dark gravito-optical dipole trap, for alkali atoms, consisting of a blue-detuned, pyramidal-hollow laser beam propagating upward and the gravity field. When cold atoms from a magneto-optical trap are loaded into the pyramidal-hollow beam and bounce inside the pyramidal-hollow beam, they experience efficient Sisyphus cooling and geometric cooling induced by the pyramidal-hollow beam and the weak repumping beam propagating downward. Our study shows that an ultracold and dense atomic sample with an equilibrium 3D momentum of � 3 ¯ and an atomic density above the point of Bose-Einstein condensation may be obtained in this pure optical trap. PACC: 3280P; 3380P; 4250

Chinese Physics•May 1, 2000•2 citations

Generations of dark hollow beams and their applications in laser cooling of atoms and all optical-type Bose-Einstein condensation

Yin Jian-Ping, Gao Wei-Jian, Wang Hai-Feng +2 more

We report on a new experimental result to generate dark hollow beams by using a geometric optical method. We propose two new methods to produce focused and localized hollow laser beams by using π-phase plates. Using Monte Carlo simulations, we have studied the Sisyphus cooling of alkali atoms in pyramidal hollow beam gravito-optical traps. We discuss some potential applications of the dark hollow beams in atom optics and the preparation of an all optically-cooled and optically-trapped atomic Bose-Einstein condensation (BEC). Our research shows that an ultracold atomic sample with a temperature of ~2µK can be obtained in the pyramidal hollow beam dipole trap and an all optical-type BEC may be realized in a far blue-detuned, hollow beam trap.

Chinese Physics•Oct 23, 2002•49 citations

Towards high phase space density of alkali atoms by simple optical cooling

Jiazhong Hu, Zachary Vendeiro, Wenlan Chen +1 more

Bulletin of the American Physical Society•May 27, 2016•0 citations
We propose a dark gravito-optical dipole trap, for alkali atoms, consisting of a blue-detuned, pyramidal-hollow laser beam propagating upward and the gravity field. When cold atoms from a magneto-optical trap are loaded into the pyramidal-hollow beam and bounce inside the pyramidal-hollow beam, they experience efficient Sisyphus cooling and geometric cooling induced by the pyramidal-hollow beam and the weak repumping beam propagating downward. Our study shows that an ultracold and dense atomic sample with an equilibrium 3D momentum of � 3 ¯ and an atomic density above the point of Bose-Einstein condensation may be obtained in this pure optical trap. PACC: 3280P; 3380P; 4250
We report on a new experimental result to generate dark hollow beams by using a geometric optical method. We propose two new methods to produce focused and localized hollow laser beams by using π-phase plates. Using Monte Carlo simulations, we have studied the Sisyphus cooling of alkali atoms in pyramidal hollow beam gravito-optical traps. We discuss some potential applications of the dark hollow beams in atom optics and the preparation of an all optically-cooled and optically-trapped atomic Bose-Einstein condensation (BEC). Our research shows that an ultracold atomic sample with a temperature of ~2µK can be obtained in the pyramidal hollow beam dipole trap and an all optical-type BEC may be realized in a far blue-detuned, hollow beam trap.