DYE LASER APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a dye laser apparatus whose overall conversion efficiency can be improved by a method wherein the satisfactory profile of a dye laser output is maintained, and is possible to restrain a part of a light guide device on the opposite side from being heated and damaged by an excitation laser beam which is incident from a light guide device on one side and which is transmitted through an excitation region inside a flow cell and the utilization efficiency of the excitation laser beam is increased. SOLUTION: The dye laser apparatus is provided with a constitution wherein the excitation region 11 inside the flow cell 14 which circulates a dye solution 12 is irradiated with the excitation laser beam 13 from at least one side by an optical fiber 17 and its tip fixation device 18, and a laser beam reflecting device 18a and a laser beam reflecting device 21a by which the excitation laser beam 13a transmitted through the excitation region 11 is reflected toward the excitation region 11 inside the flow cell 14 to the opposite side of the flow cell 14 and by which the excitation region 11 is irradiated again are installed.