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Successful EXCALIBUR Test Brings DARPA Closer to Compact High Energy Lasers
Defense Update: DARPA successfully tested an optical phased array (OPA) combining 21 laser beams, as part of the Excalibur program. With each of the 21 array elements driven by fiber laser amplifiers the low power array was able to precisely hit a target at a distance of 7 kilometers (4.3 miles). In three years the agency expects to scale up the design, delivering 100 kW weapon-class energy levels on target.
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