Magnetic trapping of metastable calcium atoms

被引：25

作者：

Hansen, DP ^{[1
]}

Mohr, JR ^{[1
]}

Hemmerich, A ^{[1
]}

机构：

[1] Univ Hamburg, Inst Laser Phys, D-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW A | 2003年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.67.021401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Metastable calcium atoms, produced in a magneto-optic trap (MOT) operating within the singlet system, are continuously loaded into a magnetic trap formed by the magnetic quadrupole field of the MOT. At MOT temperatures of 3 mK and 240 ms loading time, we observe 1.1x10(8) magnetically trapped P-3(2) atoms at densities of 2.4x10(8) cm(-3) and temperatures of 0.61 mK. In a modified scheme, we first load a MOT for metastable atoms at a temperature of 0.18 mK and subsequently release these atoms into the magnetic trap. In this case, 240 ms of loading yields 2.4x10(8) trapped P-3(2) atoms at a peak density of 8.7x10(10) cm(-3) and a temperature of 0.13 mK. The temperature decrease observed in the magnetic trap for both loading schemes can be explained only in part by trap size effects.

引用

页数：4

共 15 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].

ANDERSON, MH ;

ENSHER, JR ;

MATTHEWS, MR ;

WIEMAN, CE ;

CORNELL, EA .

SCIENCE, 1995, 269 (5221) :198-201

[2] MEASUREMENT OF THE CALCIUM 1P1-1D2 TRANSITION RATE IN A LASER-COOLED ATOMIC-BEAM [J].

BEVERINI, N ;

GIAMMANCO, F ;

MACCIONI, E ;

STRUMIA, F ;

VISSANI, G .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) :2188-2193

[3] Doppler cooling and trapping on forbidden transitions -: art. no. 123002 [J].

Binnewies, T ;

Wilpers, G ;

Sterr, U ;

Riehle, F ;

Helmcke, J ;

Mehlstäubler, TE ;

Rasel, EM ;

Ertmer, W .

PHYSICAL REVIEW LETTERS, 2001, 87 (12)

[4] Quenched narrow-line laser cooling of 40Ca to near the photon recoil limit -: art. no. 031403 [J].

Curtis, EA ;

Oates, CW ;

Hollberg, L .

PHYSICAL REVIEW A, 2001, 64 (03) :4-031403

[5] Cold collisions of Sr*-Sr in a magneto-optical trap [J].

Dinneen, TP ;

Vogel, KR ;

Arimondo, E ;

Hall, JL ;

Gallagher, A .

PHYSICAL REVIEW A, 1999, 59 (02) :1216-1222

[6]

Grünert J, 2002, PHYS REV A, V65, DOI [10.1103/PhysRevA.65.041401, 10.1103/PhysRevB.65.041401]

[7]

Grünert J, 2000, J MOD OPTIC, V47, P2733, DOI 10.1080/09500340008232193

[8]

GRUNERT J, 2000, J APPL PHYS B, V73, P1

[9] Magneto-optical trapping and cooling of strontium atoms down to the photon recoil temperature [J].

Katori, H ;

Ido, T ;

Isoya, Y ;

Kuwata-Gonokami, M .

PHYSICAL REVIEW LETTERS, 1999, 82 (06) :1116-1119

[10] HIGH-RESOLUTION SPECTROSCOPY WITH LASER-COOLED AND TRAPPED CALCIUM ATOMS [J].

KISTERS, T ;

ZEISKE, K ;

RIEHLE, F ;

HELMCKE, J .

APPLIED PHYSICS B-LASERS AND OPTICS, 1994, 59 (02) :89-98

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