| 摘要 |
PURPOSE:To make it possible to oscillate multiple wavelengths with one set and to display power in analysis, extraction, splitting and the like, by arranging a plurality of resonators having different resonance frequencies around a coloring matter cell on different light paths, and simultaneously oscillating lasers having the different frequencies. CONSTITUTION:A coloring matter cell D is excited with external pumping light F through a condenser lens E. A four-wavelength simultaneously oscillating dye laser is composed of four resonators so as to hold the coloring matter cell. In this constitution, the resonators are arranged so that angles between them are slightly changed and so that their optical axes are not deviated from an optical active part when the pumping light is converged in the coloring matter cell D. The resonators are constituted by output mirrors G1-G4 and gratings A1-A4, respectively. Beam expanders C1-C4 for preventing thermal damage of the gratings and etalons B1-B4 for narrowing the bandwidths of the oscillated wavelengths are provided on the optical axes as required. As output lights H1-H4, oscillated lights, which are turned to wavelengths lambda1-lambda2 determined by the conditions of the respective resonators, are obtained. For the coloring matter cell (D), rhodamine 6G is used, which has wide light emitting spectrums and high oscillating efficiency. |
