The (2n+1)th-order off-resonant spectroscopy from the (n+1)th-order anharmonicities of molecular...

Obtains analytical expressions of the (2n+1)th order signals and shows that the leading order of the signals (n>1) is proportional to g[sub n+1], where g[sub n+1] is the coefficient of the anharmonic potential V(q)=g[sub 3]q[sup 3]/3!+g[sub 4]q[sup 4]/4!+.... Feynman rule for the (2n+1)th correlation function; Response functions of the anharmonic system.