Time-of-flight measurement of the temperature of cold atoms for short trap-probe beam distances

被引：67

作者：

Brzozowski, TM ^{[1
]}

Maczynska, M ^{[1
]}

Zawada, M ^{[1
]}

Zachorowski, J ^{[1
]}

Gawlik, W ^{[1
]}

机构：

[1] Jagiellonian Univ, Inst Fiz M Smoluchowskiego, PL-30059 Krakow, Poland

来源：

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS | 2002年 / 4卷 / 01期

关键词：

cold atoms; temperature measurement;

D O I：

10.1088/1464-4266/4/1/310

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyse the time-of-flight method of measuring the temperature of cold trapped atoms in the specific case of short distances of the probe beam from the trap centre and finite atomic cloud size. We theoretically examine the influence of the probe beam shape and its distance from the initial position of the cloud on the temperature evaluation. These results are then verified with a three-dimensional Monte Carlo simulation and applied to our experimental data to show that the proposed procedure allows accurate and reliable determination of the temperature.

引用

页码：62 / 66

页数：5

共 16 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] LASER COOLING BELOW THE ONE-PHOTON RECOIL ENERGY BY VELOCITY-SELECTIVE COHERENT POPULATION TRAPPING - THEORETICAL-ANALYSIS [J].

ASPECT, A ;

ARIMONDO, E ;

KAISER, R ;

VANSTEENKISTE, N ;

COHENTANNOUDJI, C .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) :2112-2124

[3] EVIDENCE OF BOSE-EINSTEIN CONDENSATION IN AN ATOMIC GAS WITH ATTRACTIVE INTERACTIONS [J].

BRADLEY, CC ;

SACKETT, CA ;

TOLLETT, JJ ;

HULET, RG .

PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1687-1690

[4] RECOIL-INDUCED RESONANCES IN CESIUM - AN ATOMIC ANALOG TO THE FREE-ELECTRON LASER [J].

COURTOIS, JY ;

GRYNBERG, G ;

LOUNIS, B ;

VERKERK, P .

PHYSICAL REVIEW LETTERS, 1994, 72 (19) :3017-3020

[5] LASER COOLING BELOW THE DOPPLER LIMIT BY POLARIZATION GRADIENTS - SIMPLE THEORETICAL-MODELS [J].

DALIBARD, J ;

COHENTANNOUDJI, C .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) :2023-2045

[6] BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS [J].

DAVIS, KB ;

MEWES, MO ;

ANDREWS, MR ;

VANDRUTEN, NJ ;

DURFEE, DS ;

KURN, DM ;

KETTERLE, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :3969-3973

[7] ONLINE MEASUREMENT OF SUB-DOPPLER TEMPERATURES IN A RB MAGNETOOPTICAL TRAP-BY-TRAP CENTER OSCILLATIONS [J].

KOHNS, P ;

BUCH, P ;

SUPTITZ, W ;

CSAMBAL, C ;

ERTMER, W .

EUROPHYSICS LETTERS, 1993, 22 (07) :517-522

[8] OBSERVATION OF ATOMS LASER COOLED BELOW THE DOPPLER LIMIT [J].

LETT, PD ;

WATTS, RN ;

WESTBROOK, CI ;

PHILLIPS, WD ;

GOULD, PL ;

METCALF, HJ .

PHYSICAL REVIEW LETTERS, 1988, 61 (02) :169-172

[9]

Metcalf H., 1999, LASER COOLING TRAPPI

[10] Temperature diagnostics for cold sodium atoms by transient four-wave mixing [J].

Mitsunaga, M ;

Yamashita, M ;

Koashi, M ;

Imoto, N .

OPTICS LETTERS, 1998, 23 (11) :840-842

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