@inbook{5765, author = {D. J. Maas and D. I. Duncan and A. F. G. van der Meer and W. J. van der Zande and L. D. Noordam and P. Lambropoulos and H. Walther}, title = {Vibrational ladder climbing in NO using ultrashort IR laser pulses}, abstract = {Chirped excitation of an electronic ladder system has shown complete transfer of the population to the top-level of the ladder system. Similar excitation of vibrational ladders in molecules may provide a tool for state-selective chemistry. Experimental results on the climbing of the anharmonic vibrational ladder of nitric oxide (NO), by irradiating the molecule with femtosecond infrared (IR) pulses, are presented. The free-electron laser FELIX is tuned to lambda = 5.3 mu m with a bandwidth of Delta lambda = 0.3 mu m, corresponding to a pulse duration of 150 femtoseconds. Transfer to the excited states of NO is monitored by 1+1 REMPI. Population is found up to v = 5, the highest level within reach of the IR bandwidth. The average transfer per step of the ladder is found to be 17%.}, year = {1997}, journal = {Multiphoton Processes 1996}, volume = {154}, pages = {308-317}, isbn = {0951-32480-7503-0443-X}, language = {eng}, }