Impulsive-stimulated scattering

Ruhman S, Joly A G and Nelson K A 1987 Time-resolved observations of coherent molecular vibrational motion and the general occurrence of impulsive stimulated scattering J. Chem. Phys. 86 6563-5... 

The experiments discussed in this book are diverse, but they break down into two broad categories (1) resonant infrared methods in which ultrafast IR pulses are tuned to the wavelength of the vibrational transition and (2) Raman methods (in some instances referred to as impulsive stimulated scattering), in which two visible wavelengths have a difference in frequency equal to the vibrational frequency. In some experiments, infrared and Raman techniques are combined in a single measurement. 

Ruhman S, Kohler B, Joly AG, Nelson KA. Intermolecular vibrational motion in CS2 liquid at 165time-resolved impulsive stimulated scattering. Chem Phys Lett 1987 141 16-24. 

Figure 2 Impulsive stimulated scattering generation of material excitations with crossed beams, (a) Crossed optical beams interfere at the sample and produce a spatially periodic driving force on the material with wavelength A. (b) A probe beam incident upon the spatially periodic material response is partially diffracted, with the diffraction efficiency being proportional to the square of the amplitude of the material response.

The impulsive stimulated scattering (ISS) experiment is a stimulated, time domain analog of spontaneous, frequency domain light-scattering (LS) spec-... 

Brown JM, Slutsky LJ, Nelson KA, Cheng L-T (1989) Single-crystal elastic constants for San Carlos Peridot An apphcation of impulsive stimulated scattering. J Geophys Res B94 9485-9492 Carpenter MA, Salje EKH, Graeme-Barber A (1998) Spontaneous strain as a determinant of thermodynamic properties for phase transitions in minerals. Em J Mineral 10 621-692... 

Nelson, K.A. (1987). Nonrelaxational inertial motion in CS2 liquid observed by femtosecond time-resolved impulsive stimulated scattering. J. Phys. Chem. 91 2237-2240. 

Glourieux, C., Hinze, G., Nelson, K.A. and Payer, M.D. (2002). Thermal, structural, and orientational relaxation of supercooled salol studied by polarization-dependent impulsive stimulated scattering. J. Chem. Phys. 116 3384-3395. 

Yan Y X, Gamble E B and Nelson K A 1985 Impulsive stimulated Raman scattering general importance in femtosecond laser pulse interactions with matter, and spectroscopic applications J. Chem. Phys. 83 5391-9... 

Walsh A M and Loring R F 1989 Theory of resonant and nonresonant impulsive stimulated Raman scattering Chem. Phys. Lett. 160 299-304... 

Yan Y-X, Cheng L-T and Nelson K A 1988 Impulsive stimulated light scattering Advances in Non-... 

A light pulse of a center frequency Q impinges on an interface. Raman-active modes of nuclear motion are coherently excited via impulsive stimulated Raman scattering, when the time width of the pulse is shorter than the period of the vibration. The ultrashort light pulse has a finite frequency width related to the Fourier transformation of the time width, according to the energy-time uncertainty relation. 

Fig. 2.2. Two generation models of coherent optical phonons, (a), (c), (e) impulsive stimulated Raman scattering (ISRS). (b), (d), (f) displacive excitation of coherent phonons (DECP). Graphs (e) and (f) display the time evolution of the driving force (grey areas) and that of the displacement (solid, curves) for ISRS and DECP, respectively...

D. M. Neumark We are interested in generating coherent vibrational motion in negative ions, which typically do not have bound excited electronic states. Does your Impulsive Stimulated Raman Scattering (ISRS) scheme work if the excited state is not bound ... 

The isotropic moduli, particularly the initial bulk modulus and its pressure derivative, are key ingredients in specifying the mechanical equation of state. As noted above, determination of these properties from experimental hydrostatic compression data is difficult due to issues with acquisition of high precision at low pressures and particular sensitivity in the choice of equation of state fitting form to data below about one GPa. Alternative routes to this information at low pressures included impulsive stimulated light scattering (ISLS) and resonant ultrasound spectroscopy (RUS), which can in principle provide the complete elastic tensor (ISLS) and isotropic bulk and shear moduli (RUS). 

Yan Y-X, Nelson KA. Impulsive stimulated light scattering, n. Comparison to frequency-domain light-scattering spectroscopy. J Chem Phys 1987 87 6257-6265. 

Ruhman S, Nelson KA. Temperature-dependent molecular dynamics of liquid carbon disulphide polarization-sensitive impulsive stimulated light-scattering data and Kubo line shape analysis. J Chem Phys 1991 94 859-867. 

Kohler B, Nelson KA. Femtosecond impulsive stimulated light scattering from liquid carbon disulfide at high pressure experiment and computer simulation. J Phys Chem 1992 96 6532-6538. 

---