Complex polarisabilities and hyperpolarisabilities of atoms

MWJ Bromley; SJ Grunefeld; JM Rossi; Julian C Berengut; LY Tang; J Jiang; Yong Jun Cheng; James Mitroy

Abstract

The complex dipole polarisabilities of alkali atoms are computed for low-lying eigenstates. We present a unified method of calculation of the real part of the polarisability as well as two different imaginary contributions to the polarisability. One imaginary polarisability is related to the resonant damping of the cross-section both below and above threshold, whilst the other imaginary polarisability describes the photoionisation cross-section above threshold. We also present preliminary calculations of the complex hyperpolarisabilities of atomic clocks and how they are impacted by the linear and non-linear photon-atom interactions. � Published under licence by IOP Publishing Ltd.

Original language	English
Number of pages	1
Publication status	Published - 2015
Event	29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015 - Spain Duration: 22 Jul 2015 → 28 Jul 2015

Conference

Conference	29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015
Period	22/07/15 → 28/07/15

Cite this

@conference{f24e7cc9f9014a2988b36f5cade7c799,

title = "Complex polarisabilities and hyperpolarisabilities of atoms",

abstract = "The complex dipole polarisabilities of alkali atoms are computed for low-lying eigenstates. We present a unified method of calculation of the real part of the polarisability as well as two different imaginary contributions to the polarisability. One imaginary polarisability is related to the resonant damping of the cross-section both below and above threshold, whilst the other imaginary polarisability describes the photoionisation cross-section above threshold. We also present preliminary calculations of the complex hyperpolarisabilities of atomic clocks and how they are impacted by the linear and non-linear photon-atom interactions. � Published under licence by IOP Publishing Ltd.",

keywords = "Photons, Alkali atoms, Eigenstates, Non linear, Photon-atom interaction, Polarisabilities, Polarisability, Real part, Unified method, Polarization",

author = "MWJ Bromley and SJ Grunefeld and JM Rossi and Berengut, {Julian C} and LY Tang and J Jiang and Cheng, {Yong Jun} and James Mitroy",

year = "2015",

language = "English",

note = "29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015 ; Conference date: 22-07-2015 Through 28-07-2015",

}

TY - CONF

T1 - Complex polarisabilities and hyperpolarisabilities of atoms

AU - Bromley, MWJ

AU - Grunefeld, SJ

AU - Rossi, JM

AU - Berengut, Julian C

AU - Tang, LY

AU - Jiang, J

AU - Cheng, Yong Jun

AU - Mitroy, James

PY - 2015

Y1 - 2015

N2 - The complex dipole polarisabilities of alkali atoms are computed for low-lying eigenstates. We present a unified method of calculation of the real part of the polarisability as well as two different imaginary contributions to the polarisability. One imaginary polarisability is related to the resonant damping of the cross-section both below and above threshold, whilst the other imaginary polarisability describes the photoionisation cross-section above threshold. We also present preliminary calculations of the complex hyperpolarisabilities of atomic clocks and how they are impacted by the linear and non-linear photon-atom interactions. � Published under licence by IOP Publishing Ltd.

AB - The complex dipole polarisabilities of alkali atoms are computed for low-lying eigenstates. We present a unified method of calculation of the real part of the polarisability as well as two different imaginary contributions to the polarisability. One imaginary polarisability is related to the resonant damping of the cross-section both below and above threshold, whilst the other imaginary polarisability describes the photoionisation cross-section above threshold. We also present preliminary calculations of the complex hyperpolarisabilities of atomic clocks and how they are impacted by the linear and non-linear photon-atom interactions. � Published under licence by IOP Publishing Ltd.

KW - Photons

KW - Alkali atoms

KW - Eigenstates

KW - Non linear

KW - Photon-atom interaction

KW - Polarisabilities

KW - Polarisability

KW - Real part

KW - Unified method

KW - Polarization

M3 - Abstract

T2 - 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015

Y2 - 22 July 2015 through 28 July 2015

ER -

Complex polarisabilities and hyperpolarisabilities of atoms

Abstract

Conference

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