| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal vapor laser system for obtaining stable laser output for a long time without causing the variation in laser output due to the change in the amount of metal vapor, namely a vapor source metal surface area. SOLUTION: In the metal vapor laser system, the ratio (A/B) of an open area A per a plurality of containers 3 for accommodating a vapor source metal that are arranged inside a discharge tube 4 to an inner cross section area B of the discharge tube 4 is set to 0.02 or less, thus reducing metal vapor drip-like condensation toward the inner wall of the discharge tube 4 where the containers 3 for accommodating the vapor source metal, reducing adhesion of the metal vapor to the discharge tube, reducing thermal stress due to the difference in a thermal coefficient of expansion between the discharge tube and the vapor source metal, and obtaining stable laser output. |
