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Metal ion laser

  • US 5,128,952 A
  • Filed: 09/18/1990
  • Issued: 07/07/1992
  • Est. Priority Date: 04/12/1990
  • Status: Expired due to Fees
First Claim
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1. A hollow cathode type metal ion laser utilizing negative glow discharge for generating a laser beam, comprising:

  • a glass tube extending fore and aft directions;

    a hollow elongated cathode inserted into said glass tube;

    a plurality of anodes mounted on said glass tube;

    a pair of Brewster windows sealingly fixed to axial opposite ends of said glass tube;

    coil springs disposed between opposite ends of said hollow cathode and corresponding ends of said glass tube respectively and resiliently retained said hollow cathode in said glass tube;

    Brewster window protecting devices provided in said glass tube and near to said Brewster windows.

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