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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 2000),
  • paper QThF5

A novel cavity ringdown heterodyne spectroscopy: 1×10−10 sensitivity with microwatt light power

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Abstract

We present a novel technique in cavity ringdown spectroscopy that permits 1×10−10 absorption sensitivity with microwatt level light power. Heterodyne detection is employed between two alternating cavity modes, with one of them interacting with a molecular resonance.

© 2000 Optical Society of America

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