Atoms in electromagnetic fields

In this work, we proposed a simple model for control of subluminal and superluminal light propagation via an external magnetic field in a lambda configuration degenerate two-level atomic medium. We show that the absorption-dispersion properties and group index under the influence of the strength of coupling laser and external magnetic fields are controlled.

8p viambani 18-06-2024 3 1   Download

In this paper, we study the formation of two electromagnetically induced transparency (EIT) windows in a four-level lambda atomic system with Doppler broadening. The depth and the width of the EIT windows are easily changed by adjusting the intensity of the controlling laser fields. Meanwhile, the position of the EIT windows is also easily shifted by changing the frequency of the laser fields.

12p dianmotminh02 03-05-2024 3 2   Download

Ebook "Mathematical physical chemistry: Practical and intuitive methodology" introduces basic concepts of mathematical physics to chemists. Many textbooks and monographs of mathematical physics may appear daunting to them. Unlike other, related books, however, this one contains a practical selection of material, particularly for graduate and undergraduate students majoring in chemistry. The book first describes quantum mechanics and electromagnetism, with the relation between the two being emphasized.

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Part 2 book "Introduction to quantum optics - From the semi-classical approach to quantized light" includes content: Free quantum radiation; interaction of an atom with the quantized electromagnetic field; nonlinear optics from the semi classical approach to quantum effects complement; parametric amplification and oscillation semi classical and quantum properties complement; nonlinear optics in optical kerr media; laser manipulation of atoms from incoherent atom optics to atom lasers.

325p muasambanhan10 11-04-2024 2 1   Download

Ebook Atoms in electromagnetic fields (Second edition): Part 1 includes contents: Atoms in weak broadband quasiresonant light fields, light shifts — linear superpositions of atomic sublevels; atoms in intense resonant laser beams the dressed atom approach in the optical domain,...

347p longtimenosee03 30-01-2024 5 2   Download

Ebook Atoms in electromagnetic fields (Second edition): Part 2 includes contents: Atoms in high frequency fields or in the vacuum field simple physical pictures for radiative corrections, sisyphus cooling and subrecoil cooling, levy statistics and laser cooling,...

422p longtimenosee03 30-01-2024 3 2   Download

In this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters of the probe, pump, and signal laser fields.

14p viberkshire 09-08-2023 9 4   Download

We investigate the dynamical of pulse propagation and all-optical switching via a spontaneously generated coherence (SGC) in a three-level ladder-type atomic medium driven by a coupling field under the presence of incoherent pumping. Results show that the SGC causes modulations at the leading edge of the pulse envelope shape.

8p vistephenhawking 26-04-2022 12 2   Download

The analytical expression for the self-Kerr nonlinear coefficient in a three-level V-type atomic medium is found in the presence of the Doppler effect. Based on the analytical results, we have analyzed the enhancement and control of the Kerr nonlinear coefficient under the condition of electromagnetically induced transparency. It is shown that the Kerr nonlinear coefficient is significantly enhanced around the resonant frequency of both the probe and coupling fields.

12p nguaconbaynhay10 19-02-2021 25 4   Download

In this work, we proposed a simple model for control of optical properties via an external magnetic field in a vee-type degenerated atomic medium. By numerically solving the density matrix equations in the steady-state, we show that the absorption and dispersion properties are influenced by the strength of coupling laser and external magnetic fields.

8p vimax2711 27-03-2020 23 2   Download

This book deals with topics in atomic and molecular structure and dynamics that are important to astronomy. Indeed, the topics selected are of central interest to the field of astronomy, many having been initiated by the needs of understanding worlds other than ours. Except for some lunar surface material returned by the Apollo missions, and material naturally delivered to us by cosmic rays, comets, and meteors, our only access to the other worlds of our astronomical Universe is through our observations of electromagnetic radiation from them.

257p tom_123 14-11-2012 49 3   Download

Recent advents in laser technology and discoveries in laser physics have enabled their very new and exciting applications. Some of them cover production of new materials: nano-particles, periodic structures in nano-scale, and thin films. Others allowed better understanding of laser-matter interaction when sample is subjected to intense laser pulses of various time duration, shape in space and time domains as well as different spectral components contained in a pulse.

286p ktcn_1 10-07-2012 98 22   Download