Dependence of the transmission coefficient of passive switches on the power density of exciting neodymium laser radiation

An investigation was made of the dependences of the transmission coefficients of solutions of a polymethine dye, a dye based on a nickel complex, and bromated phthalocyanine on the density of the incident power in the form of picosecond and nanosecond neodymium laser pulses. The relaxation times of the excited states of the investigated dye molecules were determined. Excitation with nanosecond light pulses induced additional absorption in the investigated dye solutions.