Wavelength Beam Combination for Multi-Band Countermeasures Applications

Forward Photonics proposes to develop a high brightness multi-band direct diode laser using its proprietary wavelength beam combination (WBC) technology. Direct diode lasers using WBC will have significant benefits compared similar laser technologies. These include higher efficiency, a robust construction with respect to wavelength and temperature, and wavelength selectability over a large range. These are summarized below: High efficiency: maximizes the efficiency of the laser system using a direct diode approach. High Brightness: Using WBC and diodes the same beam quality of the laser system is achieved as that of a single emitter minimizing the M2 of the system, necessary for long distance atmospheric propagation. Scalable and Modular: The wavelength beam combination technique provides the most scalable approach to beam combination, there is no limit to the number of emitters that can be included in a WBC system. Compactness: Without any active elements and high power density, a WBC direct diode system offers low specific weight density (kg/kW). Wavelength Selectability: WBC can be employed at any wavelength semiconductor lasers are available, increasing scalability, and atmospheric transmission. Low subsystem size: The high efficiency of WBC allows for reduced need for cooling and electrical power.