Control of stimulated Raman scattering in the strongly nonlinear and kinetic regime using spike trains of uneven duration and delay

Phys Rev Lett. 2014 Jul 25;113(4):045002. doi: 10.1103/PhysRevLett.113.045002. Epub 2014 Jul 23.

Abstract

Stimulated Raman scattering (SRS) in its strongly nonlinear, kinetic regime is controlled by a technique of deterministic, strong temporal modulation and spatial scrambling of laser speckle patterns, called spike trains of uneven duration and delay (STUD) pulses [B. Afeyan and S. Hüller (unpublished)]. Kinetic simulations show that the proper use of STUD pulses decreases SRS reflectivity by more than an order of magnitude over random-phase-plate or induced-spatial-incoherence beams of the same average intensity and comparable bandwidth.