Patent ID: 8290017
Filing Date: 2012-10-16
Classification: H01S

Abstract:
1. A gas discharge laser apparatus, comprising: first and second spaced-apart parallel discharge-electrodes in a laser enclosure, the first discharge electrode serving as a live discharge-electrode and the second electrode serving as a ground discharge-electrode; a radio frequency (RF) feed-through for transmitting RF power from without the enclosure to the first and second discharge-electrodes within the enclosure, each of the electrodes having an elongated groove in an edge thereof facing the RF feed-through; and wherein the RF feed-through includes first and second springably compressible connecting members on a side thereof within the enclosure and attached respectively to a live electrode and a ground connection of the feed-through, each of said first and second connecting members including two spaced apart parallel arrays of metal-spring fingers with the connection members and the discharge-electrode grooves being configured such that the first and second connection members can be compressed and slidably push-fit into the grooves in respectively the first and second discharge-electrodes and retained in electrical contact with the electrodes by the spring compression of the connection members against sides of the grooves.