Emission of Organic Dyes in the Case of Nonlinear Absorption upon Excitation by the XeCl~* Laser

摘要

Spectral luminescent properties of eight organic dyes are studied upon excitation by focused radiation from the XeCl~* laser at the pump power up to 200 MW/cm~2. The transmission of pump radiation by dyes is investigated as a function of the pump power. It is shown that variations in the energy, spectral, and temporal parameters of radiation of organic dyes upon high-power excitation are explained by the development of superluminescence (amplified spontaneous emission).