50 mW Tellurite Glass Fiber Laser at 2.3 microns

We demonstrate 45-55 mW average output power at 2.3 microns in Tm
³⁺
-doped tellurite glass fiber laser pumped by a 794 nm multimode laser diode. To the best of our knowledge it is the highest 2.3 micron output from a fiber laser, and it is already a practically significant power that can be used in various applications.