Coherent light generators – Particular active media – Gas
Patent
1996-12-06
1997-12-02
Healy, Brian
Coherent light generators
Particular active media
Gas
372 55, 372 61, 372 65, 372 87, 219 851, 219 8522, 219 591, H01S 322, B23K 900
Patent
active
056944110
ABSTRACT:
An ultraviolet range laser comprising a vacuum vessel having an open end portion hermetically sealed with an output mirror glass substrate, which is featured in that the output mirror glass substrate is formed of a glass material which is capable of allowing a laser beam of 337 nm in wavelength to pass therethrough at a transmittance of 80 to 96% as measured when the thickness of the glass substrate is set to 5 mm and whose thermal expansion coefficient falls in the range of 44.times.10.sup.-7 /.degree.C. to 55.times.10.sup.-7 /.degree.C. at a temperature of 0.degree. C. to 300.degree. C., and in that a metallic sealing ring is hermetically attached to the open end portion of vacuum vessel and the hermetical sealing of the open end portion of vacuum vessel with the output mirror glass substrate is achieved by hermetically adhering the output mirror glass substrate onto the metallic sealing ring via a low melting point solder glass interposed therebetween.
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Hayashi Toshiharu
Inamoto Koji
Nakamuta Hironori
Otsuki Eiichiro
Urakata Hiroto
Healy Brian
Kabushiki Kaisha Toshiba
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