Spectrally narrowed high operating temperature pumps for eye-safe laser weapons

Efficient electrically pumped eye-safe lasers for battlefield applications require high brightness, spectrally stabilized fiber-coupled pump lasers emitting near 1500 nm. Existing 1500 nm pump lasers are spectrally unstabilized, have poor efficiency and brightness and require cooling. Using new diode quantum-well designs and high thermal and optical coupling approaches, we will demonstrate a new generation of pump modules which provide unprecedented power and brightness but operate at high ambient temperatures without cooling.