Systems and techniques for multilayer electrode assemblies are generally described. In some examples, a multilayer electrode assembly may comprise a first dielectric material. In some examples, the first dielectric material may be shaped so as to form a channel defined by an interior surface. In various examples the multilayer electrode assemblies may comprise a first metal layer disposed adjacent to a first portion of the exterior surface of the first dielectric material. In various further examples, the multilayer electrode assemblies may comprise a second metal layer disposed adjacent to a second portion of the exterior surface of the first dielectric material. In some examples, the first metal layer may be disposed in a first spaced relationship with the second metal layer. In various examples, a substantially uniform electric field may be generated in the channel of the first dielectric material when a voltage is applied to the multilayer electrode assembly.

An electrode is formed of a bismuth brass alloy. The bismuth brass alloy contains about 30 weight percent to about 40 weight percent of zinc, about 1 weight percent to about 10 weight percent of bismuth, and the balance copper. The bismuth brass alloy has a microstructure that includes islands of bismuth dispersed within the base metal formed of copper and zinc and also includes bismuth at the grain boundaries of the base metal. As a large bulky atom with high resistivity against fluorine attack, bismuth segregates at the grain boundaries and blocks the fluorine diffusion into the lattice. In the presence of fluorine, the bismuth brass alloy forms a protective layer on the elongated surface of the body of the electrode. This protective layer inhibits reaction of the base metal formed of copper and zinc with fluorine and thereby preserves the surface of the electrode material.

Disclosed is a device for generating a laser radiation including a box and an electrode, the electrode including a column extending along an axial direction and a collar surrounding the column and having a first face perpendicular to the axial direction and a second face parallel to the first face, the second face facing the box. The generating device includes a ring having a third face bearing against the box, the ring defining a hole emerging on the third face and accommodating the collar, the hole being defined along the axial direction by a bearing face arranged in the ring, perpendicular to the axial direction and facing the box, the first face bearing against the bearing face.

The present invention provides a corrosion-resistant CuZn alloy, the alloy having a Zn content of from 15 to 55% by mass, the balance being Cu and inevitable impurities, wherein a total content of Zn and Cu is 99.995% by mass or more, and wherein a number of pores is 1/cm.sup.2 or less based on optical microscopic observation.

A polarisation and mode selection technique for a gas waveguide laser is described in which a surface of the waveguide is formed to be substantially dielectric with a localised metallic region therein. The metallic region provides linear polarisation while the dielectric surface provides for low order mode selection. Embodiments are described to channel and planar waveguides with various resonator configurations. Ranges are provided for the size and location of the metallic region on the waveguide surface.

A microwave excited gas slab laser comprising a waveguide wherein the electrodes are covered with multi-layered stripes either forming a photonic band-gap or having a refractive index lower than 1.

Systems and techniques for multilayer electrode assemblies are generally described. In some examples, a multilayer electrode assembly may comprise a first dielectric material. In some examples, the first dielectric material may be shaped so as to form a channel defined by an interior surface. In various examples the multilayer electrode assemblies may comprise a first metal layer disposed adjacent to a first portion of the exterior surface of the first dielectric material. In various further examples, the multilayer electrode assemblies may comprise a second metal layer disposed adjacent to a second portion of the exterior surface of the first dielectric material. In some examples, the first metal layer may be disposed in a first spaced relationship with the second metal layer. In various examples, a substantially uniform electric field may be generated in the channel of the first dielectric material when a voltage is applied to the multilayer electrode assembly.

An electrode is formed of a bismuth brass alloy. The bismuth brass alloy contains about 30 weight percent to about 40 weight percent of zinc, about 1 weight percent to about 10 weight percent of bismuth, and the balance copper. The bismuth brass alloy has a microstructure that includes islands of bismuth dispersed within the base metal formed of copper and zinc and also includes bismuth at the grain boundaries of the base metal. As a large bulky atom with high resistivity against fluorine attack, bismuth segregates at the grain boundaries and blocks the fluorine diffusion into the lattice. In the presence of fluorine, the bismuth brass alloy forms a protective layer on the elongated surface of the body of the electrode. This protective layer inhibits reaction of the base metal formed of copper and zinc with fluorine and thereby preserves the surface of the electrode material.

A diffusion-cooled gas laser system that includes a first and a second electrode and a discharge gap arranged between the electrodes, wherein a dielectric is arranged on at least one of the electrodes on the discharge-gap side. The system is characterized in that the dielectric thickness d/.sub.res the dielectric for influencing the discharge .sub.res of distribution in the discharge gap varies along at least one dimension of the electrode on which the dielectric is arranged, wherein d is the thickness of the dielectric, and .sub.res is the resultant constant of the dielectric, and, at its thickest point, has a thickness of at least 1 mm or is greater than one hundredth of the length of the electrode or is greater than one thousandth of a wavelength determined by the frequency of a radiofrequency electrical power to be coupled into the system.

An excimer laser chamber device may include: a the laser chamber; a first electrode provided in the laser chamber; a second electrode provided in the laser chamber to face the first electrode; an electrode holder provided in the laser chamber to be connected to a high voltage; at least one connecting terminal including a first anchored portion anchored to the first electrode and a second anchored portion anchored to the electrode holder, the at least one connecting terminal being configured to electrically connect the first electrode and the electrode holder; a guide member held by the electrode holder, the guide member being configured to position the first electrode in a direction substantially perpendicular to both a direction of electric discharge between the first electrode and the second electrode and a longitudinal direction of the first electrode; and an electrode-gap-varying unit configured to move the first electrode in a direction substantially parallel to the direction of electric discharge.