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Subkilohertz-narrowed, Frequency/phase-locked Mid-IR Quantum Cascade Lasers for High-precision Molecular Spectroscopy

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We narrow QCL radiation below 1 kHz by using two different techniques: frequency locking to a molecular transition and phase locking to an absolutely-referenced difference-frequency-generated source. Applications of both techniques are presented.

© 2013 Optical Society of America

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