title: Impulsive stimulated Raman scattering: comparison between phase-sensitive and spectrally filtered techniques.
abstract: 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.
authors.affiliation: FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120, USA. wahlstrj@umich.edu
authors.forename: Jared K
authors.initials: JK
authors.lastname: Wahlstrand
authors.forename: Roberto
authors.initials: R
authors.lastname: Merlin
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Li
authors.forename: Steven T
authors.initials: ST
authors.lastname: Cundiff
authors.forename: Oscar E
authors.initials: OE
authors.lastname: Martinez
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman / Q000295:instrumentation* / Q000379:methods*