Z-pinch Probe Laser Pulse In The Experimental Study Of Stimulated Brillouin Compression

In the experimental research of Z-pinch physics, a laser pulse with a relatively short width and high intensity is used as a light detecting head to diagnose the density distribution and the magnetic configuration of plasma in its inner explosion. Stimulated Brillouin Scattering(SBS) is a three-order nonlinear process of optics, and during this process the back-propagating stimulated scattering light has a high-ratio compressed width with fairly high energy-efficiency. This paper carries on experimental study with the SBS generator cell and attains compressed pulses of 0.7 to 1.2 ns. Calculation in this paper shows that a pump pulse of 2.0 J energy, 9.0 ns width can be compressed to 2.1 ns width with 60% energy reserved. In this article a two cell pulse-compressor system is designed based on the results of experimental study and theoretical analysis and pulse transition from 2.0 J energy, 9.0 ns width to 1.2 J energy,2.1 ns width is predicted.