Abstract: An ion laser is described having an anode construction which has no special configuration specifically designed to accommodate differential thermal expansion between it and a ceramic tube. The anode includes a radially thick first portion for good thermal conductivity and a thin-walled sleeve integral therewith extending beyond the tube to provide an exterior surface for electrical connection. The radially thick first portion provides desired thermal conductivity in the radial direction while the thin-walled sleeve acts to resist axial thermal conductivity. The anode is brazed to the interior cylindrical surface of a ceramic cylinder providing part of the tube, with a portion of its exterior surface extending beyond the cylindrical portion to be exposed externally for electrical connection. A ceramic end sleeve is brazed within the interior of the thin-walled portion of the anode to structurally support the same.

Abstract: A mounting assembly for supporting a Brewster window and mirror to intercept a laser beam at the end of a gas laser envelope includes an elongated tubular member having one end opening into the gas laser envelope and an opposite end closed by the Brewster window. A rigid housing supporting the mirror is joined to the tubular member close to the end having the Brewster window by a flexible sealed joint that permits limited movement of the housing relative to the tubular member generally along the length of the tubular member while inhibiting flow of contaminants from the exterior into the passage formed by the rigid housing between the Brewster window and mirror. A seal is placed between the rigid housing and mirror to inhibit flow of such contaminants into the passage from the mirror location.