cw laser action of Er3+ in double sensitized fluoroaluminate glass at room temperature

Abstract

Cw lasing at 1.6 μm was obtained for the first time in Cr, Yb, Er:fluoroaluminate glass. Double step pumping via Cr³⁺ and Yb³⁺ with a krypton laser yields a threshold pump power of 80 mW. Efficient lasing can be expected using glass samples of optimized dopant concentration and improved optical quality.