Figure 2.
Simulations of absolute values of 2D-IR spectra, with a dephasing time of 900 fs, static inhomogeneous broadening of 9.5 cm−1, and an anharmonicity of 16 cm−1. (Upper) The 2D-IR spectrum for a single oscillator such as NMA-d, showing a single diagonal peak. (Lower) The 2D-IR spectrum for two oscillators, with a coupling of 5 cm−1.