SAITO Yasunori Shinshu University, Information Eng., Instructer, 工学部, 助手 (40135166)
NOMURA Akio Shinshu University, Information Eng., Professor, 工学部, 教授 (00115362)
|Budget Amount *help
¥4,300,000 (Direct Cost : ¥4,300,000)
Fiscal Year 1991 : ¥2,100,000 (Direct Cost : ¥2,100,000)
Fiscal Year 1990 : ¥2,200,000 (Direct Cost : ¥2,200,000)
During the period of two years, a fundamental study on simultaneous three wavelength laser emission from dye mixtures excited by a nitrogen laser were made as a part of study program of simultaneous multi-wavelength laser operations including three primary-color laser's one. Before the experiments on dye mixtures, suitable concentrations of each dye for, the mix were estimated in a process of simulation to find the possibility of simultaneous two or three wavelength laser emission. It was confirmed that this process was quite effective for selections of dyes through the whole experiments. The self-made nitrogen laser, energy of 4.6mJ, pulse width of 7.5ns, voltage of 15kV, total efficiency of 0.18%, and wavelength of 337. lnm, was successfully used to produce the simultaneous three primary-colors as a pumping source. Coumarin460 (C-460), Disodium Flourescein (DF), and both of Rhodamin6lO and 640 have been used as the dye for obtaining laser oscillations in blue, green, and red regions, respectively. Dyes were mixed in a suitable concentration to obtain simultaneous multi-wavelength laser emission, especially three primary-color, laser's one, on the basis of the simulation. A circulating system was adapted to the selected dye mixtures to obtain both of a lotig life and a stable operation, and it's feasibility was verified. Energy-transfer mechanisms should be considered more rigidly in a further research, though it has been shown that the simultaneous three primary-color laser emission could be obtained by using the C460/DF/CV and C460/DF/LD dye mixtures.