ISSN: 2949-401X

Baranov I. Ya., Koptev A. V., Pelina A. V.

Abstract. A fundamental possibility has been proposed to increase the efficiency of an actively mode-lockеd 4.8 μm single-line CO laser to 70 %, with convectively cooled CO mixture. In this case, to excite CO molecules, it is possible to use a self-sustained high-frequency discharge in a supersonic flow of a CO mixture and obtain a continuous train of nanosecond spike. The high peak intensity of the pulses makes it possible to effectively change the 4.8 mcm wavelength in a nonlinear crystal at a relatively low power of an actively mode-locked CO laser. The value of spike can be low when initiating non-linear processes, processing materials with a limited heat affected zone, isotope separation, remote sensing of the surface in space and the atmosphere on Earth.

Keywords: continuous-wave/pulse, CO laser, single-line, nanosecond spike, mode-locked, 70 % efficiency, peak intensity, self-sustained high-frequency discharge, convectively cooled

For citation: Baranov I. Ya., Koptev A. V., Pelina A. V. On the possibility of mode-locked CO laser continuous-wave/pulse radiation and 4.8 mcm single-line 70 % efficiency. Aerospace Engineering and Technology. 2024. Vol. 2, no. 2, pp. 87–102. DOI 10.52467/2949-401X-2024-2-2-87-102. EDN VFRZFM (In Russian)