As a part of the DARPA Excalibur program, Optonicus delivered to MIT/LL the high-power (1.5 kW per fiber) fiber-array laser head composed of 21 adaptive fiber collimators (subapertures) with integrated water-cooling system, fiber-tip x and y positioners for wavefront tip/tilt control at each fiber-array subaperture, and 42-channel SPGD control system with high-voltage amplifiers and control software.