| 摘要 |
PURPOSE:To maintain a constant divergent angle of a laser beam without dependence on the output of laser by installing a cooling means to one end face of a solid state element and a refracting mirror which is non-reflective to the light from an excitation light source and totally reflective to laser light so that it may serve as a resonance mirror. CONSTITUTION:The light transmitted from an excitation light source 3 lit up by a power source 4 is repeatedly reflected directly or on the inner surface of a cone-shaped light transmission passage 5 which is reduced in its mouth. It is integrated, passes through a reflecting mirror 2, and is applied to a solid state element 1, thereby generating a laser beam. The laser beams 9 and 11 generated inside an unstable type resonator which comprises an outlet mirror 6 and a reflecting mirror 2 are amplified by a laser medium 1 are emitted by way of a non-reflective film 8 of the outlet mirror 6, or a central part of the beams through a partial reflective film 7 on the inner surface of the outlet mirror 6. Both are synthesized and emitted as a laser beam 10. The generated heat is eliminated from the element 1 by way of a cooling medium 55. |
