EXCITED-STATE STRUCTURE AND DYNAMICS OF NITRIC-OXIDE PROBED BY RESONANT 4-WAVE-MIXING TECHNIQUES

We review the results from two experiments that used resonant four-wav e mixing (RFWM) techniques to investigate double-resonance transitions in NO. In the first experiment, laser-induced grating decay curves th at reveal quantum beats due to the hyperfine structure of the A (2) Si gma, upsilon' = 0 state were observed and interpreted. In the second, multistate interactions between the L (2) Pi(1/2,3/2), upsilon = 8 and Q (2) Pi(1/2,3/2), upsilon = 0 states were investigated, and new assi gnments were made. The results highlight the potential of RFWM techniq ues for probing excited-state physics.