Effects of Molecular Orientational Relaxation on the Simultaneous Two-Wavelength Oscillation of Dye Lasers

概要

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The output energy change, caused by a change in the cavity lifetimes, of a simultaneous two-wavelength dye laser was measured. The results show that the coupling between the two orthogonally polarized components of the radiation field in the cavity is mediated by dye molecules in the excited states. By the use of the quasi-steady-state solution of the rate equations in which the Brownian orientational motion was considered, the experimental results were well explained. From this analysis, the orientational relaxation time of rhodamine 6G molecules in the first singlet state in a 2.0×10^<-4> M ethanol solution was obtained as τ^e_<or>〜(0.7±0.1)×10^<-10> sec. The difference between this value and other experimental values is also discussed.
社団法人応用物理学会の論文
1976-04-05