Multiline FIR lasers by two wavelength cw CO2 laser pumping

Simultaneously oscillated multi-line FIR lasers from a single FIR laser cavity pumped by two wavelength CO₂ lasers have been developed for plasma diagnostics and the other applications. We have obtained simultaneous oscillations as following : (i) 60.5- and 118.8 mum-CH₃OH lasers from pumping by 9R(18) CO₂ laser and 9P(36) CO₂ laser, (ii) 70.5- and 118.8-mum CH₃OH lasers from pumping by 9P(34) CO₂ laser and 9P(36) CO₂ laser, and (iii) 118.8-mum CH₃OH and 253.7-mum CD₃OH lasers from pumping by 9P(36) CO₂ laser and 10R(36) CO₂ laser. An output power of a 118.8-mum CH₃OH laser has been enhanced by two same CO₂ laser lines pumping.