Experimental Study of Coherent Summation of Radiation from Two Widely Aperture Pulsed

Authors V.E. Rogalin1,2, I.A. Kaplunov2, I.K. Babaev1, Yu.M. Vaskovsky1, M.I. Zhavoronkov1, V.M. Ivanov1, A.S. Korenev1

1 Оpen Joint Stock Company «National Center of Laser Systems and Complexes «Astrophysica», 95, Volokolamskoe Sh., 125424 Moscow, Russia

2 Tver State University, 33, Zhelyabova Str., 170100 Tver, Russia

Е-mail [email protected]
Issue Volume 6, Year 2014, Number 3
Dates Received 19 May 2014; published online 15 July 2014
Citation V.E. Rogalin, I.A. Kaplunov, et al., J. Nano- Electron. Phys. 6 No 3, 03004 (2014)
PACS Number(s) 42.60.Jf
Keywords Coherent radiation, Summation of radiation, Pulsed lasers, CO2 lasers, Laser active medium, Laser energy.
Annotation Emission of two high-power pulsed CO2-lasers with a transverse discharge at atmospheric pressure in the active medium and the output beam aperture 100  100 mm, united by a joint unstable telescopic resonator, was coherently summarized under conditions of real ground-level trackon the screen surface, which was remote from output mirror of the laser at a distance of 263 m. Output Brewster windows of laser cuvettes were manufactured from single-crystal plates of sodium chloride which had a diameter of 300 mm. Mirrors for resonator and optical circuit were manufactured from oxygen-free copper. Active medium - a mixture of gases: CO2: N2: He in the ratio 1 : 2 : 3. Laser pulse duration is 5 microseconds. During the experiment, when summing on the screen 2-laser beams at the lowest possible convergence angle of rays, the interference pattern was registered.

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