Nernst Lamp for Laser Pumping.
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Pagination or Media Count:
An object of the invention is to provide an improved laser pump which concentrates its emission of energy in the narrow absorption spectrum of the laser material. This object is accomplished in the present invention by an improved construction of a solid state laser which permits pumping of the laser by a Nernst glower. The glower or lamp is made of a ceramic conductor which does not require a glass envelope for operation. In a specific application, the glow is constructed in a cylindrical configuration and the laser rod is placed along its geometrical axis. As a result, the optical coupling couping between the glower and the laser is significantly improved. The ceramic cylinder or rods are doped with several rare earth elements which emit energy in a relatively narrow spectrum. A LiYF4YLF laser crystal is also doped with the same rare earth elements so that it absorbs energy of the same wavelength as that emitted by the lamp. The energy emitted by the lamp is essentially concentrated in the pump region of the laser crystal so that an efficient use of pumping energy is maintained.
- Lasers and Masers