[Role of physical properties of laser radiation in light absorption by heme-containing biological molecules].

Influence of space and time coherence, spectral density and polarization of laser radiation upon the light absorption by hemolyzate, oxyhaemoglobin and catalase is studied experimentally. It is shown that the main physical factor of laser radiation defining the light absorption by the analysed biological molecules is time coherence and hence, the monochromatic property of laser beam.