Spectral Simplification
of the NH Spectrum by Intermediate Level Labeling
a)
The DFWM spectrum of the Q-branch region in the (0-0) band
of the A-X electronic transition displays a congested spectrum
exhibiting a series of overlapping transitions;
b)
simplified two-color RFWM spectrum by tuning the PUMP laser
to the Q1(5)
transition in the (1-0) band and scanning the frequency
of the DUMP laser
