| 摘要 |
PURPOSE:To make the intensity of an excitation light fully small and restrict deterioration of a reflective member by separating an optic element group from a dye stuff cell at the opposite side to the side where the excited light is irradiated to the dye stuff solution. CONSTITUTION:A dye stuff solution 3 flows up and down in the Figure within a slit which is formed by transparent crystal plates 2a and 2b in a dye stuff cell 1 within a dye stuff laser device. An excited light 4 is collected by a cylindrical lens 5 and is allowed to irradiate the dye stuff cell 1, and the width is S1 at the central part of a slit. Thus, the diameter of the generated laser beam 6 reaches nearly S1 and the beam advances in the direction which is vertical to the surface of the paper in the Figure. The excited light which is transmitted without being absorbed by the dye stuff solution 3 passes through the crystal plate 2b and is reflected by a concave mirror 7. Thus, the reflected light here advances, while being collected is irradiated the dye stuff cell 1 again, and adjusted again so that the width of the excitation light becomes S1 at the central part of the slit. This adjustment can be performed by changing the distance L between the coloring matter cell and the concave mirror 7. As a result, the intensity of the reflection light within the dye stuff solution becomes uniform and deterioration of a reflection film can be fully restricted. |
