High-efficiency vertical-cavity laser diode pumps for high-energy solid-state lasers

Aerius Photonics proposes to develop fiber laser pump blocks and modules based on Vertical-Cavity Surface Emitting Laser (VCSEL) arrays which can have a manufacturing cost ten times lower than the existing Edge Emitting Laser (EEL) technology. Aerius will demonstrate and deliver high efficiency VCSEL array blocks and modules emitting at 808 nm and 940 nm wavelength. These blocks and modules can be used to pump Nd-doped, Yb-doped solid state and fiber lasers. The array design results in a low wavelength-temperature dependence which is a key performance characteristic to pump narrow absorption lines. In Phase I, Aerius will design all the elements of the pump block and module: VCSEL array, optical, electrical, thermal and mechanical components. Aerius will also build an array prototype to perform early experiments to evaluate and reduce risk. In Phase II, Aerius will build complete blocks and modules, evaluate their performance and execute a second iteration of design and build. These resulting advanced pumps will be provided to system integrators for testing in actual solid state and fiber lasers.