Collimation of a rubidium beam below the Doppler limit

B. Sheehy; S. Q. Shang; P. van der Straten; H. Metcalf

doi:10.1016/0301-0104(90)89123-8

Collimation of a rubidium beam below the Doppler limit

B. Sheehy
, S. Q. Shang
, P. van der Straten
, H. Metcalf

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We used counterpropagating beams of diode laser light forming a one-dimensional optical molasses perpendicular to an atomic beam of ⁸⁵Rb for active collimation. The minimum measured angular spread of the beam we achieved corresponds to a transverse rms speed of 3 cm/s, well below ν_D= (7łhγ/20M),^{1 2}= 10 cm/s corresponding to ordinary one-dimensional Doppler molasses.Achieving this low velocity, limited only by experimental geometry, depends on a magnetic field of ≈ 20 μT applied perpendicular to the axis of the circularly polarized light beam.

Original language	English
Pages (from-to)	317-325
Number of pages	9
Journal	Chemical Physics
Volume	145
Issue number	2
DOIs	https://doi.org/10.1016/0301-0104(90)89123-8
State	Published - Aug 15 1990

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title = "Collimation of a rubidium beam below the Doppler limit",

abstract = "We used counterpropagating beams of diode laser light forming a one-dimensional optical molasses perpendicular to an atomic beam of 85Rb for active collimation. The minimum measured angular spread of the beam we achieved corresponds to a transverse rms speed of 3 cm/s, well below νD= (7{\l}hγ/20M), 1 2= 10 cm/s corresponding to ordinary one-dimensional Doppler molasses.Achieving this low velocity, limited only by experimental geometry, depends on a magnetic field of ≈ 20 μT applied perpendicular to the axis of the circularly polarized light beam.",

author = "B. Sheehy and Shang, \{S. Q.\} and \{van der Straten\}, P. and H. Metcalf",

year = "1990",

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doi = "10.1016/0301-0104(90)89123-8",

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T1 - Collimation of a rubidium beam below the Doppler limit

AU - Sheehy, B.

AU - Shang, S. Q.

AU - van der Straten, P.

AU - Metcalf, H.

PY - 1990/8/15

Y1 - 1990/8/15

N2 - We used counterpropagating beams of diode laser light forming a one-dimensional optical molasses perpendicular to an atomic beam of 85Rb for active collimation. The minimum measured angular spread of the beam we achieved corresponds to a transverse rms speed of 3 cm/s, well below νD= (7łhγ/20M), 1 2= 10 cm/s corresponding to ordinary one-dimensional Doppler molasses.Achieving this low velocity, limited only by experimental geometry, depends on a magnetic field of ≈ 20 μT applied perpendicular to the axis of the circularly polarized light beam.

AB - We used counterpropagating beams of diode laser light forming a one-dimensional optical molasses perpendicular to an atomic beam of 85Rb for active collimation. The minimum measured angular spread of the beam we achieved corresponds to a transverse rms speed of 3 cm/s, well below νD= (7łhγ/20M), 1 2= 10 cm/s corresponding to ordinary one-dimensional Doppler molasses.Achieving this low velocity, limited only by experimental geometry, depends on a magnetic field of ≈ 20 μT applied perpendicular to the axis of the circularly polarized light beam.

UR - https://www.scopus.com/pages/publications/0038295930

U2 - 10.1016/0301-0104(90)89123-8

DO - 10.1016/0301-0104(90)89123-8

M3 - Article

AN - SCOPUS:0038295930

SN - 0301-0104

VL - 145

SP - 317

EP - 325

JO - Chemical Physics

JF - Chemical Physics

IS - 2

ER -

Collimation of a rubidium beam below the Doppler limit

Abstract

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