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  • Laser Applications to Chemical and Environmental Analysis
  • Technical Digest (Optica Publishing Group, 2004),
  • paper TuF8

Design and performance assessment of a stable astigmatic Herriott cell for trace gas measurements on airborne platforms

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Abstract

The present paper discusses a new, more stable, astigmatic Herriott cell employing carbon fiber stabilizing rods. Laboratory tests using a near-IR absorption feature of CO at 1564.168-nm revealed a factor of two improvement in measurement stability compared with the present commercial design when the sampling pressure was changed by ± 2 Torr around 50 Torr. This new cell should significantly enhance our efforts to measure trace gases employing pathlengths of 100 to 200-meters on airborne platforms with minimum detectable line center absorbances of less than 10−6.

© 2004 Optical Society of America

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