| 摘要 |
PURPOSE:To contrive to make it possible for laser beam to react efficiently with an encapsulating gas by a method wherein a hollow waveguide is formed of a glass pipe, a metal thin film layer formed on the inside of this pipe and a thin film layer, which is formed on the inside of this metal thin film layer and has all absorption of laser beam smaller than that of the metal thin film layer. CONSTITUTION:A hollow waveguide 3A is formed of a glass pipe 5, a metal thin film layer 6 formed on the inside of this pipe 5 and a thin film layer 7, which is formed on the inside of this layer 6 and has an absorption of laser beam smaller than that of the layer 6. As the glass pipe is used in such a way, the inner wall of the waveguide can be very smoothed and a low-loss waveguide can be obtained. Thereby, the waveguide 3A enables laser beam to react efficiently with an encapsulating gas. |
