CW HCN laser gain in a hollow dielectric rectangular cross-section discharge tube |
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Authors: | J L Bruneau P Belland T Lebertre D Veron |
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Institution: | 1. Départment de Physique du Plasma et de la Fusion Contr?lée, Centre d'Etudes Nucléaires, Association Euratom-CEA sur la Fusion, F-92260, Fontenay-aux-Roses, France
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Abstract: | This paper describes a 1 m-long CW HCN discharge laser with a hollow dielectric rectangular discharge tube of 5×20 cm2 cross-section. For optimum working conditions, the characteristics of the amplifying medium have been made constant over
the cross-section, by using an additional magnetic field. Then, the unsaturated gain for the 337 μm line is 6.8% m−1. It is shown to be dependent on the smaller dimension of the cross-section rather than on the other dimension. By using the
tube as a waveguide, laser output power of 1 Watt might be obtained with a discharge length of 4 m, instead of the 12m-long
discharge required to get the same output power from a cylindrical waveguide laser. |
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Keywords: | 42 55 |
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