Siemens Aktiengesellschaft

Erwin Hubner

Hinrich Heynisch

Heinz Barth

Adolf Schneider

Hans Krueger

Hans Golser

Ludger Grage

Gerhard Brumme

Klemens Hubner

Hans Meier

A gas laser tube assembly includes a gas laser tube having ends, optical elements each vacuum-tightly closing off a respective end of the gas laser tube, each of the optical elements including a washer-shaped ceramic flange and a terminating plate being transparent to laser radiation and thermally matched to the ceramic flange, the ceramic flange having an outer rim joined to the gas laser tube and a central beam passage opening formed therein, and the terminating plate having two base surfaces, and glass solder connecting the terminating plate to the ceramic flange with the terminating plate covering the beam passage opening and projecting beyond the ceramic flange with at least one of the base surfaces thereof and a method of manufacturing the same.

Gas laser tube and method for manufacturing the same

In an ion laser having a discharge channel extending through a ceramic tube, a coil of thermal conductive material is placed around the ceramic tube and the tube and coil combination are inserted into a bore of a heat eliminating device. The tube, coil, and heat eliminating device are soldered to one another so as to provide clearance between individual turns of the coil, thereby providing good cooling characteristics and enhanced power of the laser without risk of breakage of the ceramic tube.

Gas discharge tube for an ion laser

A transversely excited gas laser, includes: an elongated gas-filled discharge chamber having an optical axis; a main cathode electrode and a main anode electrode extended along the optical axis in the discharge chamber defining a main discharge space between the main cathode and the main anode electrodes through which the optical axis extends, the main electrodes bordering two sides of the main discharge space leaving two other sides open; two pairs of auxiliary electrodes each being extended parallel to the optical axis in vicinity of a respective one of the open sides of the main discharge space and mutually spaced apart by a given distance, each of the auxiliary electrodes including a conductor and a dielectric shell surrounding the conductor, each of the auxiliary electrodes being spaced from all of the other electrodes by a set breakdown distance; and a driving unit connected to the electrodes, the driving unit supplying different potentials to the main cathode and main anode electrodes producing a main electric discharge therebetween during operation of the gas laser, and the driving unit supplying different potentials to the pairs of auxiliary electrodes causing a corona discharge preionizing the gas in the main discharge space to take place therebetween across the given distance during operation of the gas laser.

Transversely excited gas laser

A temperature measuring probe for measuring excess temperatures at the exhaust of an internal combustion engine is provided which incorporates an NTC resistor in a gas-tight metal housing. The housing is vacuum-tight, shock-proof, and vibration-proof (10 g RMS, 0 through 500 Hz) and the probe is suitable for temperature sensing up to about 700.degree. C. The probe is particularly suitable for use as a temperature monitor for turbo-chargers.

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Grafing, Germany

Erwin Hubner