Long-pulse KrCl laser with a high discharge quality

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Casper, L.C. and Bastiaens, H.M.J. and Peters, P.J.M. and Boller, K.-J. and Hofstra, R.M. (2007) Long-pulse KrCl laser with a high discharge quality. Applied physics B: Lasers and optics, 88 (1). pp. 61-66. ISSN 0946-2171

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Abstract:The discharge quality and optimum pump parameters of a long-pulse high-pressure gas discharge excited KrCl laser are investigated. A three-electrode prepulse–mainpulse excitation circuit is employed as pump source. The discharge volume contains a gas mixture of HCl/Kr/Ne operated at a total pressure of up to 5 bar. For a plane–plane resonator, the divergence of both output laser beams is measured. A low beam divergence of less than 1 mrad is measured as a result of the very high discharge homogeneity. A maximum laser pulse duration of 150 ns (FWHM) is achieved for a pump duration of 270 ns (FWHM) and a power density of 340 kW cm-3. Pumping the discharge under optimum conditions employing a stable resonator results in a maximum specific energy of 0.45 J/l with a laser pulse duration of 117 ns and an efficiency of 0.63% based on the deposited energy.
Item Type:Article
Copyright:© 2007 The Author(s)
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/74875
Official URL:http://dx.doi.org/10.1007/s00340-007-2621-y
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Metis ID: 239413