Controlling Vibrational Excitation with Shaped Mid-IR Pulses

TitleControlling Vibrational Excitation with Shaped Mid-IR Pulses
Publication TypeJournal Article
Year of Publication2007
AuthorsStrasfeld DB, Shim S-H, Zanni MT
Secondary TitlePhysical Review Letters
Date Published7/2007

We report selective population of the excited vibrational levels of the T1u CO-stretching mode in W(CO)6 using phase-tailored, femtosecond mid-IR (5.2  μm, 1923  cm-1) pulses. An evolutionary algorithm was used to optimize specific vibrational populations. Stimulated emission peaks, indicative of population inversion, could be induced. Systematic truncation of each optimized pulse allowed for increased understanding of the excitation mechanism. The pulses and techniques developed herein will have broad applications in controlling ground state chemistry and enhancing vibrational spectroscopies.

Short TitlePhys. Rev. Lett.