Selective reflection by atomic vapor: experiments and self-consistent theory

Badalyan, Anahit; Chaltykyan, V. O.; Grigoryan, G. G.; Papoyan, A.; Shmavonyan, Svetlana; Movsessian, M E

doi:10.1140/epjd/e2005-00258-6

Cited by 19 publications

(11 citation statements)

References 22 publications

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“…In many of these experiments, it is essential to tightly stabilize the laser frequency to a specific atomic transition. Various spectroscopic techniques such as saturated absorption spectroscopy [2][3][4], polarization spectroscopy [5], dichroicatomic-vapor laser lock (DAVLL) [6,7], and selective reflection spectroscopy [8][9][10][11] have been used for sub-Doppler or Doppler spectroscopy in alkali vapor cells.…”

Section: Introductionmentioning

confidence: 99%

Microfabricated saturated absorption laser spectrometer

Knappe¹,

Robinson²,

Hollberg³

2007

Opt. Express

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We demonstrate a miniature microfabricated saturated absorption laser spectrometer. The system consists of miniature optics, a microfabricated Rb vapor cell, heaters, and a photodetector, all contained within a volume of 0.1 cm(3). Saturated absorption spectra were measured with a diode laser at 795 nm. They are comparable to signals obtained with standard table-top setups, although the rubidium vapor cell has an interior volume of only 1 mm(3). We discuss the performance and prospects for using such systems as a miniature optical wavelength reference, compatible with transportable instruments.

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Section: Introductionmentioning

confidence: 99%

Microfabricated saturated absorption laser spectrometer

Knappe¹,

Robinson²,

Hollberg³

2007

Opt. Express

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“…It is clear that the locking can be considerably simplified when the resonant optical process employed yields directly a dispersive signal, as in the case of techniques exploiting magnetic circular dichroism, the so-called "dichroic atomic vapor laser locking" (DAVLL) method [4][5][6] or its sub-Doppler modifications [7,13]). A similar (nearly) all-optical locking can be achieved using collinear polarization spectroscopy [11], as well as high-density (see [14] and references therein) or off-axis selective reflection [9].…”

Section: Introductionmentioning

confidence: 85%

Laser frequency stabilization using selective reflection from a vapor cell with a half-wavelength thickness

et al. 2007

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Abstract:We have experimentally studied the selective reflection spectra of a circularly-polarized laser beam from a sub-micrometric Rb vapor cell with a thickness L around λ/2 (λ = 780 nm being the laser wavelength tuned to the D 2 line) in the presence of a longitudinal magnetic field. Based on the results of these studies, we propose a new method for the tunable locking of the diode laser frequency, which does not require frequency modulation nor complex electronics. The experimental realization of the technique has demonstrated its effectiveness and its competitiveness with the known DAVVL-type methods. Response of the locked system to controlled laser diode temperature changes (upper trace) illustrated by the "anti-correlated" changes of the (feedback-controlled) injection current (lower trace)

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“…12,13 , where it is treated numerically; more comprehensive theoretical approach for arbitrary atomic densities based on self-consistent solution of Maxwell equations together with density matrix equation for a multilevel system is presented in Ref. 17 The fact that selective reflection signal originates from a wavelength-scale-thickness-boundary of a dielectric window and resonant atomic vapor, carrying direct information on dispersion and absorption properties of the medium, allows its usage as an essential spectroscopic tool differing in a number of aspects from the conventional absorption spectroscopy (including also relatively narrow width of spectral lines). Among the applications of SR spectroscopy are: studies of interatomic collision mechanisms and determination of the homogeneous width, cross sections of collisions and the shift of resonance lines 11,[18][19][20] , study of the van der Waals interaction of atoms with a dielectric surface [21][22][23] , studies of coherent and magneto-optical processes 20,24-26 , determination of abundances of isotopes in natural atomic vapors 17 , locking a diode laser frequency to atomic resonance lines [27][28][29] , etc.…”

Section: Selective Reflection Overviewmentioning

confidence: 99%

Selective reflection studies of molecular cesium vapor

2010

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We report the preliminary results of experimental studies of a dense cesium vapor in all-sapphire sealed-off Cs cell (temperature up to 500 °C, atomic and molecular densities up to 10 18 and 3.2×10 16 cm -3 , respectively) in selective reflection (SR) configuration. Probing the vapor by a 780 nm laser radiation scanned in 20 GHz range, we have observed a spectral structure, which appears in the vapor temperature range of 250 -400 °C. Though the cell is filled with pure cesium, starting from 300 °C we have revealed a noticeable SR contribution of rubidium atomic D 2 line transitions that fall in the laser tuning range. The spectral features observed in present work can be attributed not only to cesium dimers (Cs 2 ) having absorption band in this spectral region, but also to RbCs molecules. Relevant spectroscopic properties of these molecules are also addressed. We believe this is the first observation of selective reflection from the interface of dielectric and molecular vapor. More experiments and theoretical treatment is required to clarify the mechanisms involved and identify the origin of each spectral component, the further work program is outlined.

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Selective reflection by atomic vapor: experiments and self-consistent theory

Cited by 19 publications

References 22 publications

Microfabricated saturated absorption laser spectrometer

Microfabricated saturated absorption laser spectrometer

Laser frequency stabilization using selective reflection from a vapor cell with a half-wavelength thickness

Selective reflection studies of molecular cesium vapor

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