Opt Lett
FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120, USA.
Published: April 2005
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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http://dx.doi.org/10.1364/ol.30.000926 | DOI Listing |
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