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

Journal Article · Tue May 01 04:00:00 EDT 1979 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1979v009n05ABEH009020· OSTI ID:5886833

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

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

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFIERS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
FILTERS
LASER RADIATION
LASERS
NEODYMIUM LASERS
RADIATIONS
SOLID STATE LASERS