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Improved TCSM lasers with antireflection coatings have been developed that operate in a stable zero-order mode to output powers of 80 mW CW. The devices operated in a stable single longitudinal mode to powers >65 mW. This is believed to be the highest single-mode power ever reported from an individual diode laser.
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D.E. Ackley (1984) studied this question.
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