Quantum Cascade Laser Array with Integrated Wavelength Beam Combining

Pendar Technologies proposes to develop the next generation of compact, high power quantum cascade laser (QCL) sources with output power exceeding 10 Watts at a wavelength of 4.6 microns. The proposed subsystem will include a DFB QCL array integrated monolithically with power amplifiers, low-loss passive waveguides resulting from ion implantation and optical elements aimed at realizing on-chip wavelength beam combining with high efficiency. The design parameters will be explored to maximize output power and wall plug efficiency while minimizing the number of integrated elements necessary. Methods to manufacture the laser subsystems with high production yield will be explored.