Figure 5: Simplified basic designs of a laser with (a) an aerosolevaporation reactor and (b) an aerosol reactor with a limited length of the evaporated film : are the cavity mirror diameters; is the cavity length; F is the focal length of the output mirror; l is the reactor length; (1) unstable telescopic cavity; (2) aerosol reactor; (3) master oscillator; (4) evaporated film; (5) solenoid; (6) gassupply pipes.