| 摘要 |
PURPOSE:To enable the control of a resonant light in wavelength by a method wherein a prism variable in a mounting angle is provided to a position so as to intersect with an optical axis and made to be replaceable with another prism which differs in material. CONSTITUTION:A coloring material cell 11 provided with an inlet 12 and an outlet 13 for a coloring material solution, a partial reflection mirror 15 which is intersected with an optical axis 20 that penetrates the cell 11 on one side of the cell 11, a prism 16 which is variable in a mounting angle 18, intersects with the optical axis 20 on the other side of the cell 11, and provided with a coated reflection film 17 formed on its rear, light shielding plates 22 and 24 provided with pinholes 21 and 23 respectively, which are installed between the coloring material cell 11 and the partial reflection mirror 15 and the prism 16 respectively, and a prism mounting angle controlling device and a prism exchanging device are provided. By these processes, the control of the resonant optical wavelength can be easily performed as compared with a conventional device which performs that by controlling a coloring material in concentration, so that the energy loss can be decreased. |
