W.c. Heraeus Gmbh

Volker Ernst

Hans Opower

Walter Wohlfart

Rainer Nitsche

Dieter Wendt

Wolfram Gorisch

Walter Skrlac

Walter Kirchner

Volker Weyer

A gas laser has (1) a reflecting body with a reflecting surface, (2) excitation space structure cooperative with the reflecting body for defining an excitation space which is open opposite the reflecting surface of the reflecting body, (3) devices for lasingly exciting a gas in the excitation space and (4) a mirror assembly. The mirror assembly has a mirror having a reflecting surface facing the opening in the excitation space. A radial flange is about the mirror with the reflecting surface of the mirror on one axial side of the radial flange. At least one spacer and, preferably three, circumferentially-spaced bars project from the excitation space structure and engage the radial flange substantially axially for supporting it at least one of axially slidably and tiltably. Bellows sealingly connect the one axial side of the radial flange to the opening of the excitation space structure and its other axial side to a backplate immovably connected to the spacer bar on the other axial side of the radial flange. Preferably, the reflecting body is another such mirror assembly.

Mirror assembly for gas laser

Gas laser of circular cross section perpendicular to the direction of beam propagation, having an optical resonator. The laser has, for continuous or modulated continuous beam operation, a tube as the inner electrode (2), which is connected to a high-frequency voltage source. The outer electrode (4) likewise comprises a tube which is disposed coaxially with the inner electrode (2). Between the two electrodes (2, 4) is the annular excitation chamber (3). The tube wall serving as outer electrode (4) is provided with slot-like cavities (1) which are open toward the excitation chamber (3) and serve for the cooling of the gas therein.

Gas laser

A gas laser of circular cross section perpendicular to the direction of beam propagation and having an optical resonator is disclosed. The laser has, for continuous or modulated continuous beam operation, a metal tube as inside conductor, which is connected to a high-frequency voltage source. An outside conductor, which is coaxial with the inside conductor consists of a tube of metal of good electrical conductivity. The inside conductor is surrounded, leaving an intervening space, by a jacket tube of dielectric or metallic material. A dielectric cooling liquid of electrical insulating quality and low loss factor for high-frequency fields flows through the space between the inside conductor and the jacket tube.

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Neu-Esting, Germany

Volker Ernst