Keith A. Nelson

TL;DR: In this article, anharmonic lattice dynamics with a heterodyne bispectral 2D Raman technique was investigated with a 3D lattice model and a 2D-Rambus model.

TL;DR: In this article, the authors used time resolved impulsive stimulated Raman scattering (ISRS) to characterize the lowest frequency A 1 phonon-polariton mode in lithium tantalate, and the anomalously high and wavevector-dependent damping rates observed in terms of coupling of the polariton to a weakly Raman-active relaxational mode and to two heavily damped vibrational modes.

TL;DR: A femtosecond pulse initiates phase-coherent nuclear motion in nearly any medium through which it passes, through either optical absorption or impulsive stimulated light scattering as discussed by the authors, and these motions can be monitored in real time with additional short pulses.

TL;DR: In this paper, photonic bandgap materials were fabricated for THz radiation, generated THz waves by impulsive stimulated Raman scattering, and imaged the spatio-temporal evolution of the fields within the structures with polariton imaging.