A two chamber electrically pumped electron beam stabilized gas discharge laser is enabled to operate at lower electron accelerating voltages for given power applications through provision of very thin separating diaphragms. The apparatus is controlled throughout initial pump down, laser gas filling, laser operation and air release phases to prevent occurrence of a diaphragm rupturing pressure differential between the two chambers or the inadvertent malsequencing of chamber evacuation and backfill.
A laser device disposed around an electron orbit in a SR device, for being excited by SR lights and emitting stimulated emission of radiation. A synchrotron radiation excited laser device comprising a synchrotron radiation device generating synchrotron radiation in the plane including an electron orbit, and a laser medium member formed of a material capable of being excited by synchrotron radiation to a state capable of emitting light, which can form a new light source utilizing SR radiation which has been thrown away in vain in the SR device.
A gas containing an active iodine compound is circulated through a laser tube, a purifying device and a gas reconstitution device. The active compound is consumed by lasing in the laser tube, waste products of the lasing action are removed by the purifying device and the gas reconstitution device maintains the concentration of the active compound at an operational level.
A device for the preparation of a gas mixture includes a closed circuit. Mixture components of a gas mixture are fed with greatly differing partial pressures ranging from low to highest partial pressures to the closed circuit. The gas mixture is circulated in the closed circuit. At least one of the mixture components with low partial pressure is replenished at increasingly shorter intervals. The gas mixture is completely exchanged when a given minimal length of the intervals is reached. At least one branch parallel to a section of the closed circuit conducts the gas mixture substantially completely free of flow losses. The at least one branch includes a magnetic valve, a differential pressure sensor in series with the magnetic valve having a total measuring range corresponding to the low partial pressures, the differential pressure sensor controlling the replenishment of the mixture components having the low partial pressure exclusively while the magnetic valve is closed, and an absolute pressure sensor controlling at least the replenishment of the mixture component having the highest partial pressure.
A modularized system for controlling the gas pressure within a copper vapor or like laser is described herein. This system includes a gas input assembly which serves to direct gas into the laser in a controlled manner in response to the pressure therein for maintaining the laser pressure at a particular value, for example 40 torr. The system also includes a gas output assembly including a vacuum pump and a capillary tube arrangement which operates within both a viscous flow region and a molecular flow region for drawing gas out of the laser in a controlled manner.
A gas laser apparatus is operated in such a manner that gas supplied to a laser chamber is excited for laser oscillation. A cabinet (11) which houses gas containers (12 and 13) is located adjacent to the laser oscillator (1) or integrated with it, The piping for the laser gas is incorporated in the cabinet, Such a structure realizes an economical laser of stabilized performance and easy maintenance.
