FINE CAVITY STRUCTURE CONTAINING POROUS SILICON AS LIGHT SOURCE FOR CAF2:ND LASER AND ARRANGING METHOD FOR THE SAME LIGHT SOURCE

摘要

PURPOSE: To provide method and device for a generating laser light from a thin film, doped with a rare earth by using porous Si as a light source for optical pumping. ;CONSTITUTION: A method and device 242 cause intense spectral emission by relating a porous Si layer 230 to a CaF₂ film 234 which is doped with a rare earth, so that the CaF₂ film 234 doped with the rare earth absorbs light from the porous Si layer 230. Circuits 228 and 244 related to the device 242 cause light emission by activating the porous Si layer 230. The porous Si layer 230 is formed electrically by a chemical vapor-depositing method or by forming crystalline silicon into an anode.;COPYRIGHT: (C)1994,JPO