Source of broadband white light generated on oxide matrices highly doped with rare earth ions, exci

An exemplary embodiment provides for a source of white light having at least one white light emitting device composed of a transparent glass/quartz chamber, a vacuum chamber including an optically active element, a spacer, a focusing lens, an IR laser diode, where the optically active element arranged in the vacuum chamber is a thin-layer oxide matrix doped with rare earth ions selected from the group of Nd, Yb, the concentration of dopant ions being in the range of 0.0001 to 100 at %.