Abstract
The status of high-power (50 to 1000 mW) diode lasers for space communications is reviewed, with emphasis on monolithic devices. The current performance and future potential of single-element devices, few-element (two to three) phase-locked arrays, and many-element (> 10) phase-locked arrays are presented and discussed. A brief discussion of hybrid devices for achieving watt-range powers is presented as well. Subject terms: high-power diode lasers; phase-locked arrays; nonabsorbing-mirror diode lasers; quantum-well lasers; diffraction-limited beam; master-oscillator power amplifier; injection-locked diode lasers; direct detection laser-transceiver; coherent detection.

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