Abstract
The performance of a GaAs-based superlattice quantum cascade laser is reported. Both the maximum operating temperature, 95 °C, and the peak power output, 300 mW at room temperature, exceed previous records of GaAs-based quantum cascade lasers. Various types of cavities were explored: conventional Fabry Perot cavities for maximum power output, narrow cavities for improved cooling, cylindrical cavities for potentially low threshold and single-mode distributed-feedback lasers for applications in spectroscopy.
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