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Proceedings Article

Radial and temporal laser pulse profiles in a 0.2-kW average power copper HyBrID laser

[+] Author Affiliations
David R. Jones, Arthur Maitland, Chris E. Little

Univ. of St. Andrews (United Kingdom)

Proc. SPIE 2118, Gas, Metal Vapor, and Free-Electron Lasers and Applications, 42 (May 25, 1994); doi:10.1117/12.176676
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From Conference Volume 2118

  • Gas, Metal Vapor, and Free-Electron Lasers and Applications
  • Vern N. Smiley; Frank K. Tittel
  • Los Angeles, CA | January 23, 1994

abstract

The transverse profiles and evolution of the laser intensities of a high-power copper HyBrID laser (510.6 nm, 578.2 nm) are presented. Both the radial profiles and temporal evolutions of the laser pulse intensities are markedly different in a large- bore (6 cm) HyBrID laser than in conventional elemental metal copper vapor lasers of similar dimensions. The differences in laser intensity distributions and their temporal evolution are attributed to the electron-attaching properties of hydrogen and bromine in the laser buffer gas mixture of a HyBrID laser. The significantly low conductivity of the gas in a HyBrID laser means that the plasma skin effect is relatively weak and does not influence the development of laser oscillation to any great extent; oscillation in a 6 cm bore HyBrID laser begins on the tube axis first and at the wall 3-4 ns later; the time-averaged laser intensity peaks on the tube axis.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

David R. Jones ; Arthur Maitland and Chris E. Little
"Radial and temporal laser pulse profiles in a 0.2-kW average power copper HyBrID laser", Proc. SPIE 2118, Gas, Metal Vapor, and Free-Electron Lasers and Applications, 42 (May 25, 1994); doi:10.1117/12.176676; http://dx.doi.org/10.1117/12.176676


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