WAVEGUIDE TYPE LASER DEVICE

PURPOSE:To reduce a waveguide loss even if a space between facing electrodes is narrow and facilitate an oscillation of high efficiency by forming thin film layers which show little absorption near an operating wavelength on the surfaces of the facing metal electrodes. CONSTITUTION:Al2O3, which is n...

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Bibliographic Details
Main Authors AZUMA TOSHIHIKO, HONGO AKISHI, NISHIDA SHIGEO, MIYAGI MITSUNOBU
Format Patent
LanguageEnglish
Published 04.12.1986
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:PURPOSE:To reduce a waveguide loss even if a space between facing electrodes is narrow and facilitate an oscillation of high efficiency by forming thin film layers which show little absorption near an operating wavelength on the surfaces of the facing metal electrodes. CONSTITUTION:Al2O3, which is not toxic and whose thermal conductivity is not so low, is employed as a material for dielectrics 1 and Cu, whose heterorefractive index is not so large, is employed as a material for metal electrodes 2. Thin films 4 are composed of ZnSe and formed by a method such as sputtering, vacuum evaporation or CVD. A waveguide passage 3, which is a passage for a laser discharge, is surrounded by the dielectrics 1 and the metal electrodes 2 coated with the thin films 4 and has a square shape and its dimensions are about 2X2X200mm. The waveguide passage 3 can generate a single-mode oscillation and, as an output intensity distribution is close to a theta circular distribution, can be connected to an external waveguide passage easily. A mixture gas of He, CO2 and N2 or He, CO2, N2 and Xe is enclosed in the waveguide passage 3 with a gas pressure of about 100tor.
Bibliography:Application Number: JP19850115837