Stable all-optical formation of Bose-Einstein condensate using pointing-stabilized optical trapping beams

被引：7

作者：

Kobayashi, J ^{[1
]}

Izumi, Y

Kumakura, M

Takahashi, Y

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan

[2] JST, CREST, Kawaguchi, Saitama 3320012, Japan

[3] JST, PREST, Kawaguchi, Saitama 3320012, Japan

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2006年 / 83卷 / 01期

关键词：

D O I：

10.1007/s00340-006-2140-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By stabilizing the beam pointing of optical trapping beams, we have succeeded in stable formation of Bose-Einstein condensate (BEC) of Rb-87 with all-optical method. The thermal effect of acousto-optic modulator (AOM) is usually one of the most serious problems to induce beam-pointing instability, especially for high power CO2 laser. By passing the beam through AOM twice, we have improved the beam pointing from about 4.8 mrad to less than 0.4 mrad, which has been experimentally confirmed to be small enough to stably form BEC at the crossed region of CO2 lasers as well as to perform experiments using an optical lattice which might have been affected by beam-pointing instability.

引用

页码：21 / 25

页数：5

共 12 条

[1]

Barrett M D, 2002, P 18 INT C AT PHYS C, P31

[2] All-optical formation of an atomic Bose-Einstein condensate [J].

Barrett, MD ;

Sauer, JA ;

Chapman, MS .

PHYSICAL REVIEW LETTERS, 2001, 87 (01)

[3]

CENNINI G, 2003, PHYS REV LETT, V91, P240

[4] An optical trap for cold rubidium molecules [J].

Fioretti, A ;

Lozeille, J ;

Massa, CA ;

Mazzoni, M ;

Gabbanini, C .

OPTICS COMMUNICATIONS, 2004, 243 (1-6) :203-208

[5] CO2-laser optical lattice with cold rubidium atoms [J].

Friebel, S ;

D'Andrea, C ;

Walz, J ;

Weitz, M ;

Hansch, TW .

PHYSICAL REVIEW A, 1998, 57 (01) :R20-R23

[6] All-optical production of a degenerate Fermi gas [J].

Granade, SR ;

Gehm, ME ;

O'Hara, KM ;

Thomas, JE .

PHYSICAL REVIEW LETTERS, 2002, 88 (12) :4

[7]

KOBAYASHI J, 2003, JAP PHYS SOC M SEND

[8] Ultrastable CO2 laser trapping of lithium fermions [J].

O'Hara, KM ;

Granade, SR ;

Gehm, ME ;

Savard, TA ;

Bali, S ;

Freed, C ;

Thomas, JE .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4204-4207

[9] High-density trapping of cold ytterbium atoms by an optical dipole force [J].

Takasu, Y ;

Honda, K ;

Komori, K ;

Kuwamoto, T ;

Kumakura, M ;

Takahashi, Y ;

Yabuzaki, T .

PHYSICAL REVIEW LETTERS, 2003, 90 (02) :4

[10] Observation of optically trapped cold cesium molecules [J].

Takekoshi, T ;

Patterson, BM ;

Knize, RJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (23) :5105-5108

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