Abstract
We have constructed a novel optical trap for neutral atoms by using a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition. Laser-cooled rubidium atoms are trapped in the dark core of the doughnut beam with the help of two additional laser beams which limit the atomic motion along the optical axis. About 108 atoms are initially loaded into the trap, and the lifetime is 150 ms. Because the atoms are confined at a point in a weak radiation field in the absence of any external field, ideal circumstances are provided for precision measurements. The trap opens the way to a simple technique for atom manipulation, including Bose-Einstein condensation of gaseous atoms.
| Original language | English |
|---|---|
| Pages (from-to) | 4713-4716 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 78 |
| Issue number | 25 |
| Publication status | Published - 1997 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Novel optical trap of atoms with a doughnut beam. / Kuga, Takahiro; Torii, Yoshio; Shiokawa, Noritsugu; Hirano, Takuya; Shimizu, Yukiko; Sasada, Hiroyuki.
In: Physical Review Letters, Vol. 78, No. 25, 1997, p. 4713-4716.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Novel optical trap of atoms with a doughnut beam
AU - Kuga, Takahiro
AU - Torii, Yoshio
AU - Shiokawa, Noritsugu
AU - Hirano, Takuya
AU - Shimizu, Yukiko
AU - Sasada, Hiroyuki
PY - 1997
Y1 - 1997
N2 - We have constructed a novel optical trap for neutral atoms by using a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition. Laser-cooled rubidium atoms are trapped in the dark core of the doughnut beam with the help of two additional laser beams which limit the atomic motion along the optical axis. About 108 atoms are initially loaded into the trap, and the lifetime is 150 ms. Because the atoms are confined at a point in a weak radiation field in the absence of any external field, ideal circumstances are provided for precision measurements. The trap opens the way to a simple technique for atom manipulation, including Bose-Einstein condensation of gaseous atoms.
AB - We have constructed a novel optical trap for neutral atoms by using a Laguerre-Gaussian (doughnut) beam whose frequency is blue detuned to the atomic transition. Laser-cooled rubidium atoms are trapped in the dark core of the doughnut beam with the help of two additional laser beams which limit the atomic motion along the optical axis. About 108 atoms are initially loaded into the trap, and the lifetime is 150 ms. Because the atoms are confined at a point in a weak radiation field in the absence of any external field, ideal circumstances are provided for precision measurements. The trap opens the way to a simple technique for atom manipulation, including Bose-Einstein condensation of gaseous atoms.
UR - http://www.scopus.com/inward/record.url?scp=0031162474&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031162474&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031162474
VL - 78
SP - 4713
EP - 4716
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 25
ER -