Invention Grant
US09250130B2 Quantum cascade laser with autonomously aligned external cavity and related methods 有权
量子级联激光器具有自主调整的外腔和相关方法

Quantum cascade laser with autonomously aligned external cavity and related methods
Abstract:
A quantum cascade laser (QCL) may include a QCL crystal having an emitting facet, and an active region adjacent the emitting facet, the emitting facet for providing an electromagnetic beam. The QCL may include an optical cavity comprising a mirror being external to the QCL crystal, and for redirecting the electromagnetic beam into the active region of the QCL crystal to provide optical feedback, and a driver circuit for driving the QCL crystal with a constant current. The QCL may include a controller coupled to the optical cavity and for dynamically and autonomously aligning the optical cavity based upon an error signal from the QCL crystal to maintain stable the optical feedback into the active region of the QCL crystal.
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