  We demonstrate yellow laser emission using silicate glass fiber as the gain
medium. By employing core pumping using widely available GaN diode lasers with
emission at 445 nm, we show that Dy3+-doped aluminosilicate glass fiber can be
readily excited creating sufficient gain at 581 nm. In this proof of concept
demonstration, the maximum output power generated was 3 mW with a slope
efficiency approximately 1.8% with respect to injected pump.
