rraman.getKuboDamping

rraman.getKuboDamping(t, Delta, Lambda)

Calculates the damping term using Kubo’s stochastic model. This model describes the broadening, but does not yield solvent induced Stokes shifts.

Parameters:
  • t (array) – Time axis (fs).
  • Delta (float) –

    Magnitude of solvent energy gap fluctuations (cm-1). This parameter also controls the effective line shape:

    • Delta >> Lambda = Lorentzian
    • Delta << Lambda = Gaussian
  • Lambda (float) – Effective frequency of solvent fluctuations (cm-1).
Returns:

Damping term in the time domain, e^{-g(t)}.

See also

Myers, J. Raman. Spectrosc. 28, 389 (1997)