Monitoring of volatile organic components associated with waste disposal activities and gas pipeline leaks with a man-portable mid-infrared DIAL

Egor V. Degtiarev; Allen R. Geiger; Richard D. Richmond

doi:10.1117/12.453985

23 January 2002 Monitoring of volatile organic components associated with waste disposal activities and gas pipeline leaks with a man-portable mid-infrared DIAL

Egor V. Degtiarev, Allen R. Geiger, Richard D. Richmond

Author Affiliations +

Proceedings Volume 4546, Laser Radar: Ranging and Atmospheric Lidar Techniques III; (2002) https://doi.org/10.1117/12.453985
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

Abstract

LaSen, Inc. is continuing development of compact and rugged lidar systems for ground-based and airborne detection of volatile organic components (VOC) in the mid-infrared spectral region. The first-generation ground-based sensor (Lidar I) measures 0.19 m³ and weighs 55 kg. Throughout 2001, Lidar I is undergoing a series of field tests in south-central New Mexico, USA. The tests completed to date include measuring methane level at rural dumpsites and monitoring emissions from contaminated soil at a diesel fuel spill site. To support the lidar programs, LaSen developed a compact tunable mid-infrared laser source based on an intracavity optical parametric oscillator. The laser source delivers up to 1.3 mJ of mid-infrared energy per pulse and is angular tuned in the 3-5 micrometers band through a servo- controlled loop. A piezo-driven tuner for fast switching between on and off lines is available as an option. Lidar I performance characteristics relevant to detection of various VOC are discussed. The second-generation sensor (Lidar II) is undergoing development and is scheduled for tests in the fourth quarter of 2001. Lidar II is a re-packaged version of Lidar I, with a significant decrease in both weight and size. Although not specifically designed for an airborne platform, Lidar II will be capable of demonstration flights on board a helicopter operating in a look-down topographic mode.

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Egor V. Degtiarev, Allen R. Geiger, and Richard D. Richmond "Monitoring of volatile organic components associated with waste disposal activities and gas pipeline leaks with a man-portable mid-infrared DIAL", Proc. SPIE 4546, Laser Radar: Ranging and Atmospheric Lidar Techniques III, (23 January 2002); https://doi.org/10.1117/12.453985

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KEYWORDS

LIDAR

Methane

Optical parametric oscillators

Sensors

Absorption

Mid-IR

Laser sources

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