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A coherent grating-surface-emitting diode-laser array has demonstrated dynamically stable operation in the 0 degrees phase mode. The array was operated under pulsed conditions, had a peak power output of 44 mW and a large central lobe on axis in the far field, and exhibited single-mode spectral output with better than 18-dB side-mode rejection.
Semiconductor lasers whose active region is composed of a 2D array of intersubband quantum boxes (IQBs) hold the promise [1] to be significantly more efficient than many-stage (i.e., 30-40) intersubband lasers, the so-called quantum-cascade lasers (QCLs). That is a direct consequence of the fact that the electron-relaxation times in deep, unipolar QBs are(More)
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