Principles Of Nonlinear Optical Spectroscopy A Practical Approach Or Mukamel For Dummies Fixed ◉ < Official >

That new light is your signal .

[ k_signal = -k_1 + k_2 + k_3 ]

If your signal decays in 100 fs, you have electronic coherences. If it decays in 10 ps, you have vibrational coherences. If it never decays, you have a photoproduct. Principle 7: Common Mistakes Mukamel Newbies Make (And How to Fix Them) Mistake 1: Trying to calculate the exact response function analytically. Fix: Use the impulsive limit (pulses shorter than any dynamics) and Fourier transform your data. The molecule does the integral for you. That new light is your signal

You are playing pool with light waves. The signal shoots off in a unique direction away from the laser beams. This is how you separate the tiny signal from the blinding laser light. If it never decays, you have a photoproduct