Patent ID: 7559706
Filing Date: 2009-07-14
Classification: H01S

Abstract:
1. A light-amplifying optical device, comprising: a first longitudinal element comprising a core and a first cladding, said core comprising light-amplifying material, said first cladding comprising glass, said first cladding surrounding said core, a second longitudinal element, said second element comprising glass, wherein at least a portion of a side of said second element has been fused to at least a portion of a side of said first element in order to allow transverse coupling of pump light from said second element to said core through said first cladding, a third longitudinal element, said third element comprising glass, wherein at least a portion of a side of said third element has been fused to at least a portion of a side of said second element in order to allow transverse coupling of pump light from said second element to said first element, and a second cladding surrounding the combination of said first, second, and third elements in order to confine pump light to elements, said second cladding comprising glass.