Optical pumping of the N2O—He and N2O—CO2—He mixtures by a pulsed multifrequency HF laser for producing active media to amplify 10-μm high-power ultrashort pulses

Abstract

Optical pumping of the N2O—He and N2O—CO2—He active media (at a total pressure of 1 atm) by ∼1-μs pulses from a multifrequency HF laser is studied with a view to use these media for amplifying a 10-μm, 10-12-s ultrashort pulse (USP). Transitions forming the USP amplification band are determined, the energy stored in them is found, and the gains corresponding to maximum inversion in the medium are calculated.