This article is cited in 2 papers

Investigation of self-focusing and its suppression by spatial filtering in neodymium-glass laser amplifiers

V. I. Bayanov, A. A. Mak, V. A. Serebryakov, V. E. Yashin


Abstract: An experimental investigation was made of the change in the radiation brightness of subnanosecond pulses in neodymium-glass laser amplifiers. It was found that spatial filtering can increase substantially (by an order of magnitude or more) the brightness of laser radiation at intensities of 1.5 GW/cm². An investigation was made of the change in the brightness in amplifiers of different length with active elements made of different types of neodymium glass. A comparative experimental investigation was made of self-focusing in a rod and in a set of disks. The experimental data are used to propose a calculation technique for multistage amplifier systems. A criterion for estimating self-focusing in an amplifier system is discussed.

UDC: 621.375.9:535

PACS: 42.65.Jx, 42.55.Rz

Received: 10.04.1978

 English version: Soviet Journal of Quantum Electronics, 1979, 9:5, 535–539