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High-power high-brightness laser diode arrays comprising 25 tapered laser oscillators have been fabricated. The devices, based on recently developed low-modal gain epitaxial layer-structures, deliver a maximum output power of more than 25-W continuous-wave. A high beam quality uniformity is achieved with an average beam quality factor of M/sup 2/=2.6 for each individual emitter. Compared to conventional broad-area laser diode arrays the brightness of each emitter is improved by more than an order of magnitude in the slow-axis direction. These arrays have the potential to produce optical power densities as high as 1 MW/cm/sup 2/.
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Mikulla et al. (1999) studied this question.
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