Doubly Modulated Interferometry For Trace Gas Detection

Steven M. Hughes; Dana Z. Anderson

Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
OSA Technical Digest Series (CD) (Optica Publishing Group, 2007),
paper CMR6

Doubly Modulated Interferometry For Trace Gas Detection

Steven M. Hughes and Dana Z. Anderson

Conference on Lasers and Electro-Optics 2007

Baltimore, Maryland United States
6–11 May 2007
ISBN: 1557528349

From the session
Precision Spectroscopy II (CMR)

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S. M. Hughes and D. Z. Anderson, "Doubly Modulated Interferometry For Trace Gas Detection," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest Series (CD) (Optica Publishing Group, 2007), paper CMR6.

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Abstract

A double modulation scheme enhances low-frequency trace-gas-induced path-length changes in a miniature (2 cm³) adaptive interferometer. Path-length sensitivity is 0.2 pm/√Hz while ethanol vapor sensitivity is 2 ppm/√Hz.

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