Investigation of self-focusing and its suppression by spatial filtering in neodymium-glass laser amplifiers
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/cm/sup 2/. 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.
- OSTI ID:
- 5886833
- Journal Information:
- Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 9:5; ISSN SJQEA
- Country of Publication:
- United States
- Language:
- English
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