| 摘要 |
PROBLEM TO BE SOLVED: To avoid at a low cost influence of dye deterioration by providing at least two dye solution tanks arranged in parallel in a piping path and a switching mechanism for switching connection state between a dye solution tank and a piping path in a dye solution storage part. SOLUTION: In a dye solution circulation device, since connection state between at least two dye solution tanks 11a, 11b arranged in parallel and communicating tubes 15, 16 can be switched by supply side-switching valves 18a, 18b and return side-switching valves 19a, 19b, desired dye solution tanks 11a, 11b can be connected to a circulation path, that is, a circulation loop of dye solutions 12a, 12b as required. As a result, the dye solutions 12a, 12b inside a circulation loop can be periodically displaced by using at least two dye solution tanks 11a, 11b. Since the rate of dye deterioration can be restrained, lowering of oscillation performance of a dye laser can be prevented. |
