| abstract |
The object of the invention is a source of white light comprising at least one white light emitting device composed of a transparent glass/quartz chamber, a vacuum chamber comprising 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%. |