Abstract

There is considerable interest in broadband tunable infrared lasers for a variety of applications. A prime example is the Ti-sapphire laser, which is widely used despite its high price, relatively large size, and high pump power requirements. A tunable fibre laser which is compact, inexpensive and diode pumped would have clear advantages in this area. We report a first observation of a germanate glass which exhibits strong broadband infrared photoluminescence (PL) upon excitation with blue or green light.

© 2000 IEEE