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Numerical Studies on Hybrid Resonators for COIL

Hall, Th. and Duschek, F. and Grünewald K.M., and Handke, J. and Schall, O.W. (2004) Numerical Studies on Hybrid Resonators for COIL. In: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power, 5777, pp. 131-134. SPIE. XV International Symposium on Gas Flow and Chemical Lasers & High Power Lasers Conference 2004, Prag,30.Aug. - 3.Sept.04. ISBN 0-8194-5760-4.

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Abstract

A negative branch and a positive branch hybrid resonator, suitable for a laser with large optical cross section and small output coupling are explored numerically. The basis of the theory is the Fresnel-Kirchhoff integral equation, the calculations describe a passive resonator. The fabrication of cylindrical mirrors is difficult and deviations in mirror radius of curvature are possible. While a large concave radius of curvature of the mirror is allowed in the stable direction, a convex curvature is not tolerable. Near the ideal mirror parameters, the resonator in unstable direction is insensitive to mirror curvature variations, if the resonator length is appropriately adapted to the actual mirror curvatures. With respect to mirror tilt, the calculations show that in unstable direction the off-axis negative branch confocal unstable resonator is less sensitive than the off-axis positive branch confocal unstable resonator. In stable direction, the sensitivity to mirror misalignment is larger and dependent on the mirror curvature but independent of the unstable resonator part.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Numerical Studies on Hybrid Resonators for COIL
Authors:
AuthorsInstitution or Email of Authors
Hall, Th.UNSPECIFIED
Duschek, F.UNSPECIFIED
Grünewald K.M., UNSPECIFIED
Handke, J.UNSPECIFIED
Schall, O.W.UNSPECIFIED
Date:2004
Journal or Publication Title:XV International Symposium on Gas Flow, Chemical Lasers, and High-Power
Volume:5777
Page Range:pp. 131-134
Editors:
EditorsEmail
Jarmila Kodymova, UNSPECIFIED
Publisher:SPIE
Series Name:Proceedings of SPIE
ISBN:0-8194-5760-4
Status:Published
Keywords:COIL, resonator, laser
Event Title:XV International Symposium on Gas Flow and Chemical Lasers & High Power Lasers Conference 2004, Prag,30.Aug. - 3.Sept.04
Organizer:Institute of Physics of Academy of Sciences of Czech Republic
HGF - Research field:Energy
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Energy
DLR - Program:L - no assignement
DLR - Research theme (Project):UNSPECIFIED
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Dr.rer.nat. Hans-Albert Eckel
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 14:51

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