Patent ID: 6801550
Filing Date: 2004-10-05
Classification: G02B,H01S

Abstract:
Apparatus for pumping a high power fiber laser having a fiber with a doped core, comprising:a number of pumping sources; optics for focusing the light from said pumping sources to points within said fiber; and, a series of closely spaced V-grooves in the side of said fiber pointing towards respective pumping sources, said grooves spaced by less than an absorption length, each of said grooves having an alpha facet angled to reflect pumping light down said fiber in a predetermined direction, said V-grooves being positioned such that the point to which a pumping source is focused lies on an alpha facet of an associated V-groove, such that light from a number of pumping sources is reflected down said fiber around subsequent V-grooves and is combined to pump the core of said fiber.