Heat and power of Plasma Lamp
The use of a high dielectric waveguide allowed the sustaining of plasmas at much lower powers – down to 100W in some instances. It also allowed the use of conventional gas-discharge lamp fill materials which removed the need to spin the bulb. The only issue with the ceramic waveguide was that much of the light generated by the plasma was trapped inside the opaque ceramic waveguide. In 2009 Ceravision introduced an optically clear quartz waveguide which appears to resolve this issue.