Enhanced production of coherent pulsed radiation at 125 nm: the route   towards a tabletop VUV laser
  A novel approach is used to enhance by nearly two orders of magnitude the conversion efficiency of a 125 nm-coherent source, based on four-wave mixing in room-temperature mercury vapor. Saturation issues are observed and discussed. 
Sebastien Chenais (LPL), Sebastien Forget (LPL), Marie-Claude Castex   (LPL)