Abstract: This invention relates means for illumination of sealed bulbs containing an predetermined inner gaseous environment to be excited to a spontaineous emission predominately by frequency modulated photon pumped into sealed bulb through a fiber-optic waveguide by a laser, said waveguide being clad where is extends from laser and is coupled to sealed bulb and unclad where it extends through sealed bulb, and further has an intragally formed reflective end section for provisions of feedback of frequency modulated photons through the waveguide core at the output end, thereby producing counter-travelling photons within the waveguide causing said photons to collide at a variety of incident angles as to cause photons to be emitted from the unclad waveguide within sealed bulb therefore stimulating the inner gaseous environment to a spontaineous emission which in turn stimulates a frequency modulated fluorescent photon interaction coating source which creates visible light.