Complex polarisabilities and hyperpolarisabilities of atoms

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

    Research output: Contribution to conferenceAbstractResearch

    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 languageEnglish
    Number of pages1
    Publication statusPublished - 2015
    Event29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015 - Spain
    Duration: 22 Jul 201528 Jul 2015

    Conference

    Conference29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015
    Period22/07/1528/07/15

    Fingerprint

    atomic clocks
    thresholds
    cross sections
    atoms
    photoionization
    alkalies
    eigenvectors
    damping
    dipoles
    photons
    interactions

    Cite this

    Bromley, MWJ., Grunefeld, SJ., Rossi, JM., Berengut, J. C., Tang, LY., Jiang, J., ... Mitroy, J. (2015). Complex polarisabilities and hyperpolarisabilities of atoms. Abstract from 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015, .
    Bromley, MWJ ; Grunefeld, SJ ; Rossi, JM ; Berengut, Julian C ; Tang, LY ; Jiang, J ; Cheng, Yong Jun ; Mitroy, James. / Complex polarisabilities and hyperpolarisabilities of atoms. Abstract from 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015, .1 p.
    @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",

    }

    Bromley, MWJ, Grunefeld, SJ, Rossi, JM, Berengut, JC, Tang, LY, Jiang, J, Cheng, YJ & Mitroy, J 2015, 'Complex polarisabilities and hyperpolarisabilities of atoms' 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015, 22/07/15 - 28/07/15, .

    Complex polarisabilities and hyperpolarisabilities of atoms. / Bromley, MWJ; Grunefeld, SJ; Rossi, JM; Berengut, Julian C; Tang, LY; Jiang, J; Cheng, Yong Jun; Mitroy, James.

    2015. Abstract from 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015, .

    Research output: Contribution to conferenceAbstractResearch

    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

    ER -

    Bromley MWJ, Grunefeld SJ, Rossi JM, Berengut JC, Tang LY, Jiang J et al. Complex polarisabilities and hyperpolarisabilities of atoms. 2015. Abstract from 29th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015, .