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Ding F, Van Kuiken BE, Eichinger BE, et al. An efficient method for calculating dynamical hyperpolarizabilities using real-time time-dependent density functional theory. J Chem Phys. 2013;138(6):064104doi: 10.1063/1.4790583.
Ding, F., Van Kuiken, B. E., Eichinger, B. E., & Li, X. (2013). An efficient method for calculating dynamical hyperpolarizabilities using real-time time-dependent density functional theory. The Journal of chemical physics, 138(6), 064104. https://doi.org/10.1063/1.4790583
Ding, Feizhi, et al. "An efficient method for calculating dynamical hyperpolarizabilities using real-time time-dependent density functional theory." The Journal of chemical physics vol. 138,6 (2013): 064104. doi: https://doi.org/10.1063/1.4790583
Ding F, Van Kuiken BE, Eichinger BE, Li X. An efficient method for calculating dynamical hyperpolarizabilities using real-time time-dependent density functional theory. J Chem Phys. 2013 Feb 14;138(6):064104. doi: 10.1063/1.4790583. PMID: 23425458.
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J Chem Phys. 2013 Feb 14;138(6):064104. doi: 10.1063/1.4790583.

An efficient method for calculating dynamical hyperpolarizabilities using real-time time-dependent density functional theory.

The Journal of chemical physics

Feizhi Ding, Benjamin E Van Kuiken, Bruce E Eichinger, Xiaosong Li

Affiliations

  1. Department of Chemistry, University of Washington, Seattle, Washington 98195, USA.

PMID: 23425458 DOI: 10.1063/1.4790583

Abstract

In this paper we present a time-domain time-dependent density functional theory (TDDFT) approach to calculate frequency-dependent polarizability and hyperpolarizabilities. In this approach, the electronic degrees of freedom are propagated within the density matrix based TDDFT framework using the efficient modified midpoint and unitary transformation algorithm. We use monochromatic waves as external perturbations and apply the finite field method to extract various orders of the time-dependent dipole moment. By fitting each order of time-dependent dipole to sinusoidal waves with harmonic frequencies, one can obtain the corresponding (hyper)polarizability tensors. This approach avoids explicit Fourier transform and therefore does not require long simulation time. The method is illustrated with application to the optically active organic molecule para-nitroaniline, of which the frequency-dependent polarizability α(-ω; ω), second-harmonic generation β(-2ω; ω, ω), optical rectification β(0; -ω, ω), third-harmonic generation γ(-3ω; ω, ω, ω), and degenerate four-wave mixing γ(-ω; ω, ω, -ω) are calculated.

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