Claims
- 1. A CO.sub.2 gas laser device for generating laser light through glow discharge of a gas containing CO.sub.2 generated between anode and cathode electrodes disposed opposite to each other in a resonant cavity for circulating laser gas flow, the glow discharge being coaxial with the gas flow comprising:
- (a) a plurality of cathode electrodes disposed in a row extending across upstream of the gas flow, each of said cathode electrodes having a first portion extending transverse to the direction of the gas flow, a second portion extending transverse to the direction of the gas flow and offset transverse from said first portion of the cathode electrodes, said second portion being disposed downstream of said first portion with respect to said gas flow, and third portion mutually connecting adjoining ends of said first and second portions,
- (b) a turbulence generating member having a rectangular cross section and disposed upstream of the center portions of the second portion of the cathode electrodes at an appropriate distance and parallel to the cathode electrodes so as to cross the gas flow; and
- (c) a plurality of anode electrodes disposed transverse to the direction of the gas flow, parallel to the second portion of the cathode electrode, and downstream of and opposite to the cathode electrodes so as to cross the gas flow.
- 2. A CO.sub.2 gas laser device according to claim 1 in which a preliminary discharge electrode is disposed on the upstream side of the cathode electrodes in order to generate a preliminary discharge between the cathodes and the preliminary discharge electrode.
- 3. A CO.sub.2 gas laser device according to claim 1 in which said turbulence generating member is in the form of a bar of square cross section and the distance between said turbulence generating member and the cathode electrodes is made 1 to 4 times the width in cross section of said turbulence generating member.
- 4. A CO.sub.2 gas laser device according to claim 1 in which each of the cathode electrodes is in the form of a late having a rectangular cross section.
- 5. A CO.sub.2 gas laser device according to claim 1 further comprising a fourth portion extending in an upstream direction with respect to the gas flow from the end of the second portions, remote from the end thereof connected to the third portion.
Priority Claims (1)
Number |
Date |
Country |
Kind |
61-31788[U] |
Mar 1986 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 021,850, filed Mar. 4, 1987.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0064082 |
Apr 1983 |
JPX |
0175180 |
Oct 1984 |
JPX |
60-117790 |
Oct 1985 |
JPX |
0163678 |
Jul 1986 |
JPX |
Non-Patent Literature Citations (2)
Entry |
Appl. Phys. Lett. 48(8), Feb. 24, 1986, M. Kasamatsu and S. Shiratori, "New Bar Cathode System for cw CO.sub.2 Traversely Excited Lasers", 505-507. |
International Application Published under the Patent Cooperation Treaty (PCT), WO 82/01281, Apr. 15, 1982. |
Continuations (1)
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Number |
Date |
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Parent |
21850 |
Mar 1987 |
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