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Conferences > SWV > 1993 > UILS > UILS21

Generation of Ultrabright Beams in High Energy NdrGlass and KrF Laser Systems

M. H. Key, J. R. M. Barr, L. Barzanti, Z. Chang, A. R. Damerell, C. N. Danson, C. B. Edwards, J. M. Evans, S. Hancock, D. C. Hanna, C. J. Hooker, J. R. Houliston, M. H. R. Hutchinson, A. K. Kidd, S. Luan, I. P. Mercer, G. H. C. New, P. A. Norreys, K. Osvay, D. A. Pepler, D. A. Rodkiss, I. N. Ross, F. P. Schäfer, M. J. Shaw, W. Sibbett, R. A. Smith, S. Szatmari, P. Taday, W. T. Toner, T. Winstone, et al.

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Abstract

The development of ultrabright lasers is progressing rapidly particularly in the direction of table-top-terawatt systems operating at high pulse repetition rate with relatively low pulse energy. The highest pulse energies and highest absolute powers are being generated by the adaptation of larger-scale high energy laser systems operating in single pulse mode. The maximum focused intensity from either type of laser is determined by the beam brightness B which can be expressed in units of Watts cm-2 sterad-1. The focused intensity is then approximately B/f2 where f is the focal length to diameter ratio of the focusing optic. Brightness can be expressed as B = PS/λ2 where P is the power, λ the wavelength and S the Strehl ratio, quantifying the ratio of brightness in a beam with less than diffraction limited quality to that in a diffraction limited beam.

© 1993 Optical Society of America

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