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