Radiative collimation of atomic beams through two-dimensional cooling of atoms by laser-radiation pressure

Balykin, V. I.; Letokhov, V. S.; Minogin, V. G.; Rozhdestvensky, Yu.; Sidorov, A. I.

doi:10.1364/josab.2.001776

Cited by 33 publications

(14 citation statements)

References 8 publications

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“…The metallic calcium sample is placed in oven 1 from which atoms are evaporated to create an atomic beam. The divergence of the atomic beam of a selected isotope can be reduced using optical compression with laser beams perpendicular to the atomic beam [14]. The other isotopes are not affected or even pushed out of the atomic beam.…”

Section: Methodsmentioning

confidence: 99%

Single-atom detection of calcium isotopes by atom-trap trace analysis

et al. 2005

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We demonstrate a combination of an isotopically purified atom beam and a magneto-optical trap which enables the single atom detection of all stable isotopes of calcium (40, 42, 43, 44, 46 and 48). These isotopes range in abundance from 96.9 % ( 40 Ca) to 0.004 % ( 46 Ca). The trap is loaded from an atomic beam which is decelerated in a Zeeman slower and subsequently deflected over an angle of 30 • by optical molasses. The isotope selectivity of the Zeeman slower and the deflection stage is investigated experimentally and compared with Monte Carlo simulations.

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Section: Methodsmentioning

confidence: 99%

Single-atom detection of calcium isotopes by atom-trap trace analysis

et al. 2005

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“…Although with no regard to polarization, almost 30 years earlier Balykin and co-workers also used a 90°axicon in their experiments to produce the required transverse Bessel standing wave of 35 cm axial length for the collimation of atomic beams [5,6]. At optical wavelengths, that length is an order of magnitude larger than the needle proposed in Ref.…”

Section: Bessel Standing Wavesmentioning

confidence: 99%

“…Moreover, notice that for some potential applications in which the incoming wave may have been scattered or reflected before it reaches the axis, a needle even narrower than 0.36λ can be formed with just the incoming cylindrical Hankel wave. Since the incoming cylindrical wave is not totally transformed into an outgoing wave, a clean Bessel standing wave pattern cannot be formed as occurs in the experiments of collimation of atomic beams [5,6].…”

Section: Bessel Standing Wavesmentioning

confidence: 99%

Creation of a 50,000λ long needle-like field with 036λ width: comment

Chávez-Cerda¹,

Pu²

2015

J. Opt. Soc. Am. A

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In a recent paper, a method for the generation of a long, narrow needle of light was proposed [J. Opt. Soc. Am. A31, 500 (2014)10.1364/JOSAA.31.000500JOAOD61084-7529]. The authors missed fundamental aspects of the mathematical physics of cylindrical electromagnetic waves described by Bessel functions that are essential to obtain the proposed needle. We provide formal arguments showing that a different initial condition is the proper one for the intended purpose. Based on their proposed method we bring to attention the validity of Huygens' principle for cylindrical waves. Also, we extend their analysis in order to have a component of longitudinal energy flow that is needed for most of the applications they suggest. We quantitatively show that a minor modification produces this component with practically negligible increase of the needle width.

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“…Although our oven is designed to produce atomic beams with a small divergence, the divergence is still an important factor in the whole transmission from oven to MOT. The divergence of a specific isotopic componenet of the atomic beam can ATOM TRAP TRACE ANALYSIS OF Ca ISOTOPES be reduced using optical compression with laser beams perpendicular to the atomic beam [3]. The transverse velocity in the calcium beam is less than onetenth of the longitudinal velocity, for oven conditions in which the mean free path of the atoms is larger than the length of the exit channel of the oven.…”

Section: Experimental Progressmentioning

confidence: 99%

Atom Trap Trace Analysis of Ca Isotopes

et al. 2006

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In our experiment we aim at the detection of the rarest, naturally occuring calcium isotope 41 Ca by means of atom trap trace analysis. On basis of single-atom detection of 46 Ca our present sensitivity for 41 Ca is estimated to be 1 atom per hour at an abundance of 10 À12 : To reach a sensitivity at the level of natural abundance, which is 10 À14 , we need to reduce atomic beam losses. To achieve this, optical compression of the atomic beam is a promising option. We use Monte Carlo Simulations to demonstrate that optical compression of the atomic beam increases throughput of the atomic beam as well as isotope selectivity.

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Radiative collimation of atomic beams through two-dimensional cooling of atoms by laser-radiation pressure

Cited by 33 publications

References 8 publications

Single-atom detection of calcium isotopes by atom-trap trace analysis

Single-atom detection of calcium isotopes by atom-trap trace analysis

Creation of a 50,000λ long needle-like field with 036λ width: comment

Atom Trap Trace Analysis of Ca Isotopes

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