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bar code, bunker buster, cd, compact disc, compact disk, diffract, femtochemistry, gbu-28, guided bomb unit-28, holography, kerr cell, laser-guided bomb, laser beam, laser printer, lgb, lidar, maser, monopolize, optical disc, optical disk, photocoagulation, photocoagulator, ray, smart bomb, stealth fighter, universal product code, write off

optical device

optical maser