Phys. Rev. Lett. 104, 193902 (2010) [4 pages]Amplification of Impulsively Excited Molecular Rotational CoherenceReceived 14 February 2010; published 14 May 2010 We propose a scheme for preparation of high-coherence molecular dynamics which are phase stable with respect to ultrashort pulses. We experimentally demonstrate an example of this scheme using a phase-independent, nanosecond-duration, pump pulse to prepare a rotational coherence in molecular hydrogen. This rotational coherence is made phase stable with respect to a separate source of ultrashort pulses by seeding. The coherence is used to generate spectral broadening of femtosecond probe radiation by molecular phase modulation. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.193902
DOI:
10.1103/PhysRevLett.104.193902
PACS:
42.65.Re, 42.65.Dr
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