Halide-modified Ga-La sulfide glasses with improved fiber-drawing and optical properties for Pr3+-doped fiber amplifiers at 1.3 μm

Abstract

We report Cs halide-modified Ga-La sulfide glasses, a new class of chalcohalide glasses with improved fiber-drawing and optical properties suitable for Pr3+ -doped fiber amplifiers at 1.3 μm. Cs halide-modified Ga-La sulfide glasses retain the essential characteristics of low phonon-energy and good rare-earth solubility of pure Ga-La sulfide glasses. However, they transmit further into the UV/visible region of the spectrum, and can meet the need of high thermal stability for fiber fabrication. © 1997 American Institute of Physics.