Patent ID: 9195002
Filing Date: 2015-11-24
Classification: C30B,G02B,H01S

Abstract:
1. A double cladding crystal fiber configured for high power pumping laser operation using cladding-pumped scheme, said double cladding crystal fiber comprising: a core made of a yttrium aluminum garnet (YAG) crystal or a sapphire crystal; an inner cladding made of a first glass and enveloping an outside surface of said core; and an outer cladding made of a second glass and enveloping an outside surface of said inner cladding; wherein a refractive index of said core is substantially similar to a refractive index of said first glass of said inner cladding, and the refractive index of said first glass of said inner cladding is higher than a refractive index of said second glass of said outer cladding, said first glass of said inner cladding is an optical glass of model N-LaSF9 or N-LaSF41.