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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper CTuE7

Relative Frequency Stabilization of Two 8.5-micron Quantum Cascade Lasers to 5.6 Hz

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Abstract

The recent advent of quantum cascade lasers (QCLs)1,2 emitting in the mid- to long-wave infrared has greatly increased the availability of tunable lasers in this spectral region. Applications for such laser sources include high-resolution spectroscopy,3,4 optical communications and chemical sensing.5 While these have intrinsically low frequency noise compared to diode lasers due to their near-zero alpha parameter,1,6,7,8 a vast increase in their utility is obtained by frequency stabilizing them to a reference such as a molecular transition or a cavity resonance.9

© 2002 Optical Society of America

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