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Opt Lett. 2005 Apr 15;30(8):926-8.

Impulsive stimulated Raman scattering: comparison between phase-sensitive and spectrally filtered techniques.

Author information

  • 1FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120, USA. wahlstrj@umich.edu


Impulsive stimulated Raman scattering is used to generate and control coherent phonons and other low-frequency modes. In transparent materials, pump-probe experiments are usually performed by spectrally resolving the probe beam and measuring the spectral shift as a function of pump-probe time delay. By measuring the optical phase of the probe pulse as a function of time delay, we find that the phonon signal can be increased by a factor alpha(omegadelta)(-1), where omega is the phonon frequency and delta is the pulse duration.

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