TITLE

The Influence of the Orientation and Strength of a Magnetic Field on the Coherent Population Trapping in the ? System

AUTHOR(S)
Karagodova, T. Ya.
PUB. DATE
August 2002
SOURCE
Optics & Spectroscopy;Aug2002, Vol. 93 Issue 2, p194
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The influence of the orientation and strength of a magnetic field on the dynamics and dispersion of the populations of the multilevel A system upon spontaneous decay into thermostat levels is considered. The radiation field consists of two components and is specified by the vector-potential in the electric dipole approximation. From the solution of the Sch�dinger equation for a system consisting of an atom in a magnetic field + radiation field, the probability of populating a common level for the generalized A system is determined in the resonance approximation. The calculation of the dynamics and dispersion of the populations demonstrates their dependence on the orientation of the magnetic field vector with respect to the light field polarization vector and on the relationship between the magnetic field strength and radiation field intensities. The coherent population trapping occurs only in the case when Rabi frequencies either exceed or are comparable to the Zeeman splitting of magnetic sublevels. By varying the orientation of the magnetic field, it is possible to change the dynamics and dispersion of the populations, thus affecting the coherent population trapping.
ACCESSION #
7290805

Tags: ATOMIC spectroscopy;  MAGNETIC fields

 

Related Articles

  • Modelling and Evaluation of Spectra in Beam Aided Spectroscopy. von Hellermann, M. G.; Delabie, E.; Jaspers, R.; Lotte, P.; Summers, H. P. // AIP Conference Proceedings;10/22/2008, Vol. 1058 Issue 1, p187 

    The evaluation of active beam induced spectra requires advanced modelling of both active and passive features. Three types of line shapes are addressed in this paper: Thermal spectra representing Maxwellian distribution functions described by Gaussian-like line shapes, secondly broad-band fast...

  • Interrelationship between the polarization moments of different parity upon optical pumping of atoms under magnetic resonance conditions: II. Theory. Dovator, N. A.; Okunevich, A. I. // Optics & Spectroscopy;May2007, Vol. 102 Issue 5, p661 

    The mutual coupling between the polarization moments with ranks of different parity is theoretically considered. The manifestation of this mutual coupling has been revealed previously in experiments on magnetic resonance of optically oriented cesium atoms. The two well-known types of the...

  • On the Possibility of Non-Neutral Antiproton Plasmas and Antiproton-Positron Plasmas. Higaki, H. // AIP Conference Proceedings;2005, Vol. 793 Issue 1, p351 

    Progresses in accumulating a large number of low energy antiprotons with Antiproton Decelerator (AD), Radio Frequency Quadrupole Decelerator (RFQD), and a multiring trap in Atomic Spectroscopy And Collisions Using Slow Antiprotons (ASACUSA) enables the confinement of more than 106 antiprotons....

  • Emission spectroscopy of hydrogen lines in magnetized plasmas: Application to PSI studies under conditions foreseen in ITER. Ferri, S.; Rosato, J.; Marandet, Y.; Godbert-Mouret, L.; Koubiti, M.; Stamm, R.; Shumack, A. E.; Westerhout, J.; Rapp, J.; van Rooij, G. J. // AIP Conference Proceedings;10/22/2008, Vol. 1058 Issue 1, p216 

    Modelling of hydrogen line profiles in the ITER divertor plasma entails several challenges. Because of the high density (Ne>1014cm-3) low temperature (kTe<2eV) expected in the magnetized plasma close to the wall, both Stark broadening and Zeeman splitting have to be taken into account in line...

  • A novel approach to quantitative spectroscopy of atoms in a magnetic field and applications based on an atomic vapor cell with L=λ. Sargsyan, A.; Hakhumyan, G.; Papoyan, A.; Sarkisyan, D.; Atvars, A.; Auzinsh, M. // Applied Physics Letters;7/14/2008, Vol. 93 Issue 2, p021119 

    We describe the so-called λ-Zeeman method to investigate individual hyperfine transitions between Zeeman sublevels of atoms in an external magnetic field of 0.1 mT–0.25 T. Atoms are confined in a nanocell with thickness L=λ, where λ is the resonant wavelength (794 or 780 nm for D1 or D2...

  • A Solid Sampling Tool Finally Reaches Maturity. Howe, Ted; Shkelnlk, Jerry; Thomas, Rebert // Spectroscopy;Feb2001, Vol. 16 Issue 2, p54 

    The authors provide an overview of the influences in the development and commercialization of laser ablation as a sample introduction tool for analyzing solids by plasma-based spectrochemical techniques. Some typical applications using a commercial laser ablation system coupled to both ICP-MS...

  • Market Profile: Atomic Spectroscopy in Environmental Testing.  // Spectroscopy;Jan2003, Vol. 18 Issue 1, p12 

    Focuses on the global market of atomic spectroscopy in environmental testing laboratories. Use of atomic spectroscopy; Prediction of an increase in the industrial demand of the device; Types of analysis conducted at environmental laboratories.

  • Resonant Multiphoton Ionization of the 1s State of a Hydrogen Atom in a Strong Laser Field. Volkova, E. A.; Popov, A. M.; Tikhonova, O. V. // Optics & Spectroscopy;Jan2000, Vol. 88 Issue 1, p1 

    The process of resonant multiphoton ionization of a hydrogen atom in the ground 1s state is studied by direct numerical integration of the nonstationary Schr�dinger equation for a quantum system in an electromagnetic field. The dependence of photoionization probability on the radiation...

  • Assignment of the 5d6s�5d6p Transitions in the PtIX Ion: Comparison of Two Calculations of the 5d[sup 2],5d6s, and 5d6p Configurations in the Ion. Azarov, V. I.; Churilov, S. S. // Optics & Spectroscopy;Jan2000, Vol. 88 Issue 1, p11 

    The spectrum of platinum is studied in the region from 250 to 1250 �. The twenty-two 5d6s-5d6p spectral lines of the PtIX are assigned. All levels of the 5d6s configuration are found. The assignment of the previously known 5d6p levels is confirmed and their positions are refined. The 5d�,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics