Photoprocesses in laser-active media operating in the 400 nm range. II. Photochemical processes

The quantum yield of phototransformations, the relative yields of photoproducts, and the half-life of active media based on 2-4(pyridyl)-5-(4-methophenyl) oxazole (4PyPO) and of the substituted derivatives of dipyrazolinylbenzene (PDPDP) were investigated as a function of the concentration of the solution, the length of the active medium, and the parameters of the pump pulses generated by an XeCl laser. The results obtained are interpreted with the help of the data on the lasing efficiency and on the induced-absorption spectra.