Phosphate laser glass of absorption loss of 10 −4cm −1

Abstract

We have experimentally determined loss coefficients of OH as 8.1 × 10−7 cm−1 / ppm and of ionic platinum as 8.6 × 10−7-7cm−1/ppm for LHG-5 type phosphate laser glass without Nd2O3 doping. Glass has been produced with absorption loss of about 1 ×c 10−4cm−1 which is one order of magnitude lower than is presently commercially available.