| 摘要 |
PURPOSE:To obtain a colorant laser light excited highly repeatedly without altering the quality of a beam of an exciting light by providing a plurality of exciting laser oscillators, displacing pulse laser lights emitted from the oscillators in terms of time to excite the colorants. CONSTITUTION:A rotary angle detector 23 detects a time point where three pairs of rotating reflecting mirrors 20a, 22b-22a, 22b cross optical passages of the approached pulse laser lights, and inputs a detection signal to a controller 24. The controller 24 introduces synchronously pulse laser lights L1-L3 from exciting laser oscillators 10-12 on the basis of the detection signal to a reflecting surface at time point when corresponding reflecting mirrors cross the optical passages and controls the timing of laser oscillation to deflect the lights to a cell 1. Thus, the laser oscillation timings of the oscillators 10-12 are displaced, the lights L1-L3 are displaced in timing to be introduced to the cell 1 side in which colorant is sealed synchronously with the displacement. Therefore, the repetition number of excitation to the colorant sealed in the cell 1 is tripled. |
