WAVEGUIDE LASER

• Main Authors: AZUMA TOSHIHIKO, HONGO AKISHI, NISHIDA SHIGEO, MIYAGI MITSUNOBU
• Format: Patent
• Language: English
• Published: 17.08.1988
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

PURPOSE:To obtain high efficiency oscillation, by making a glass which contains metal oxide be used as an insulator which composes a hollow waveguide. CONSTITUTION:A hollow waveguide 4 is formed to be surrounded with the following parts: a pair of high-frequency excitation metallic electrodes which are disposed facing each other and coated with thin films 3 having small absorption loss at an oscillation wavelength band, and a pair of insulators 2 which are disposed facing each other on the sides of the high-frequency excitation metallic electrodes 1. A gas for laser is sealed with a prescribed pressure in the hollow waveguide 4. Said insulators 2 in such waveguide laser are formed of a glass which contains metal oxide. For example, a surface of each metallic electrode 1 made of copper is coated with a thin film 3 of Ge, ZnSe, and the like, and a lead glass formed by containing a large amount of lead in a silicate glass is used as each insulator 2 to insulate the metallic electrode 1 coated with the thin film 3. Further, RF discharge is performed transversally by connecting the metallic electrode 1 with an RF power source through a matching circuit.