Powerful terahertz CS2 laser with optical pumping

For obtaining powerful THz emission of radiation we offered to use CS₂ molecules pumping in the 10⁰0-00⁰1 channel by the radiation of TEA CO₂ laser working on lines of the 01¹1-11¹0 hot band (λ∼11.4 μm). In this case THz radiation can take place in the 00⁰1-12⁰0 channel of CS₂ molecules (λ∼117 μm). Our calculations show that for the pressure of the active medium ∼0.1 atm (L∼1 m, V≈0.1 liter) and pumping energy 1 J output energy can achieve some tens mJ and the peak power >0.1 MW. The efficiency of transformation of the energy pumping into THz radiation can reach several percents.