Radiation divergence of microsecond lasers based on a solution of rhodamine 6G and a solid-state laser based on a perylene-activated nanocomposite

V. V. Tarkovsky, S. S. Anufrik, A. O. Romashkevich, P. R. Makey

Yanka Kupala State University of Grodno

Abstract: Radiation divergences of a microsecond laser based on an ethanol solution of rhodamine 6G and a solid-state laser based on a perylene-activated nanoporous glass–polymer composite (NPG–P) are comparatively investigated as functions of the pump energy density. It is found that the main reason for a greater radiation divergence of the laser based on a NPG–P nanocomposite is the light scattering of pump radiation and laser radiation by a heterogeneous medium of the composite, as well as thermal self-action.

Keywords: rhodamine 6G, perylene, nanoporous glass–polymer composite, coherent pumping, radiation divergence, light scattering of laser radiation and pump radiation, heterogeneous medium, thermal self-action.
Received: 17.12.2021
Revised: 20.06.2022