Abstract
Recent progress in high power, slab waveguide CO2 lasers, using RF excitation, has achieved specific power output approaching 30 kW m-2 and absolute laser output powers in the kilowatt regime. Using coherent imaging effects inside an all-waveguide cavity, stabilized high order, single mode operation has been attained from the slab waveguide laser.1 Concurrent advances in multi-channel waveguide arrays have produced phase-locked operation of planar devices.2 These parallel technologies make available coherent, planar array beams, currently with up to 19 elements at power levels in the 50 to 150 W region.
© 1994 Optical Society of America
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