This article is cited in 2 papers

Elements of laser systems

Short spatial filters with spherical lenses for high-power pulsed lasers

K. F. Burdonov^ab, A. A. Soloviev^ab, A. S. Egorov^b, A. A. Shaikin^a, A. K. Potemkin<sup>a

a</sup> Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod
^b National Research Lobachevsky State University of Nizhny Novgorod

Abstract: We report possible employment of short spatial filters based on spherical lenses in a pulsed laser source (neodymium glass, 300 J, 1 ns). The influence of the spherical aberration on the quality of output radiation and coefficient of conversion to the second harmonics is studied. The ultra-short aberration spatial filter of length 1.9 m with an aperture of 122 mm is experimentally tested. A considerable shortening of multi-cascade pump lasers for modern petawatt laser systems is demonstrated by the employment of short spatial filters without expensive aspherical optics.

Keywords: petawatt laser, neodymium glass pump laser, spatial radiation quality, spatial filter.

PACS: 42.55.Rz, 42.60.By, 42.79.Bh, 42.79.Ci

Received: 19.07.2013
Revised: 28.08.2013

 English version: Quantum Electronics, 2013, 43:11, 1082–1087

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