Abstract
This work investigates the utility of femtosecond pulse shaping in increasing the efficiency of Raman excitation of molecules in the strong-field interaction regime. We study experimentally and theoretically the effect of pulse shaping on the strength of nonresonant coherent anti-Stokes Raman scattering in iodine vapor at laser intensities exceeding W/cm. We show that unlike the perturbative case, shaping strong nonresonant laser pulses can increase the signal strength beyond that observed with the transform-limited excitation. Both adiabatic and nonadiabatic schemes of excitation are explored, and the differences of their potential in increasing the excitation efficiency are discussed.
7 More- Received 15 August 2012
DOI:https://doi.org/10.1103/PhysRevA.86.043421
©2012 American Physical Society