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Quantum cascade laser (QCL) master oscillator power amplifiers (MOPAs) reaching output power levels of P=1.5W at room temperature were realized. We discuss results and describe directions for future QCL MOPA design.
We overview our recent theoretical and experimental studies of nonlinear interaction of laser modes in quantum cascade lasers (QCLs) which results in phase coherence, frequency locking, and in some cases complete synchronization of laser modes.
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