Two-dimensional heterodyned and stimulated infrared photon echoes of N-methylacetamide-D

Abstract

The vibrational frequency correlation function was detrmined from the measured stimulated infrared photon echo of N-methylacetamide-D (NMAD). By hetrodyning the echo field with a weak local oscillator, the two-dimensional infrared (2D IR) spectrum of NMAD was obtained. The 2D IR spectrum was accurately simulated from the correlation function determined from the stimulated photon echo. The photon echo field with window functions were manipulated and the resolution enhancement of the 2D IR spectrum was performed.