Kachalin G.N. 1,2, Kirdyaev N.A.1, Kunin S.A.1, Naumov M.D.1,2, Techko O.L.1,2, Panarin V.A.3
1Federal State Unitary Enterprise "Russian Federal Nuclear Center - All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod Region, Russia
2RUSSIAN FEDERAL NUCLEAR CENTER ALL-RUSSIAN RESEARCH INSTITUTE OF EXPERIMENTAL PHYSICS Sarov, Sarov, Russia
3 Research and Production Enterprise Inject Ltd, Saratov, Russia
Email: sarov.msu@yandex.ru
The paper considers a variant of the system for transverse input of pumping radiation of the laser diode modules with fiber output into the gas laser cuvette. It included experiments for studying distribution of radiation from a unit power optical fiber of the diameter of 400 μm. Based on the results of the experiment, a software model of a fiber end-face with pre-defined spatial-angular characteristics of radiation was created. There were also experiments for studying distribution of intensity of radiation in various sections inside the laser's active zone from the radiation source of the size 20.5x10.5 mm. The software package included a digital counterpart of an optical path for inputting pumping radiation into the active medium, which demonstrates good compliance with the obtained experimental data. Keywords: laser diodes, diode pumping, intensity, quartz optical fiber.
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