Details

Autor(en) / Beteiligte

• Li Hongda
• Konovalov, I. N.
• Panchenko, Yu. N.
• Puchikin, A. V.
• Andreev, M. V.
• Bobrovnikov, S. M.

Titel

Pulsed CO2 Laser Pumped by a Longitudinal Discharge in an Alternating Magnetic Field

Ist Teil von

• Atmospheric and oceanic optics, 2024-02, Vol.37 (1), p.118-122

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An original technique is suggested for pumping a pulsed CO 2 laser by a longitudinal discharge in an alternating magnetic field. A small CO 2 laser with active medium ∼200 mm long, pulse energy of ∼30 mJ, and efficiency of 3.4% is designed on the basis of this technique. It is revealed that the main factor which limits the generation energy of small lasers is the development of current instabilities in a longitudinal discharge over a cross section of the discharge tube. It is noted that the growth of the instabilities accelerates as the pressure of a CO 2 : N 2 : H 2 : He gas mixture increases to more than 0.1 atm and the specific pump power becomes higher than 3 MW/cm 3 . The use of an external alternating magnetic field superimposed on a pulsed longitudinal discharge makes it possible to increase the total pressure of the gas mixture in the laser to 0.4 atm when maintaining the combustion of the volume discharge.