Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source

D. Mitchell; K. Duffin; W. Johnstone

doi:10.1117/12.835810

Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source

D. Mitchell, K. Duffin, W. Johnstone

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We report a long-range near-IR methane sensor for inspection of natural gas collection, storage sites and pipeline networks. The principle is that a laser carrier beam is directed at the target surface across a test path and the backscatter from the surface is collected via a large Fresnel lens onto the photoreceiver. A Raman amplifier has been designed to amplify the TDLS optical signal generated by a 1650.95nm DFB laser diode to over 1W CW. Combining the high power output of the Raman amplifier and the highly sensitive TDLS technique, we may report 100ppm.m sensitivity at more than 100m by extrapolation.

Original language	English
Journal	Proceedings of SPIE the International Society for Optical Engineering
Volume	7503
Issue number	750350
DOIs	https://doi.org/10.1117/12.835810
Publication status	Published - Oct 2009

Keywords

remote methane sensor
TDLS
tuneable diode laser spectroscopy

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10.1117/12.835810

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title = "Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source",

abstract = "We report a long-range near-IR methane sensor for inspection of natural gas collection, storage sites and pipeline networks. The principle is that a laser carrier beam is directed at the target surface across a test path and the backscatter from the surface is collected via a large Fresnel lens onto the photoreceiver. A Raman amplifier has been designed to amplify the TDLS optical signal generated by a 1650.95nm DFB laser diode to over 1W CW. Combining the high power output of the Raman amplifier and the highly sensitive TDLS technique, we may report 100ppm.m sensitivity at more than 100m by extrapolation.",

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AU - Duffin, K.

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N2 - We report a long-range near-IR methane sensor for inspection of natural gas collection, storage sites and pipeline networks. The principle is that a laser carrier beam is directed at the target surface across a test path and the backscatter from the surface is collected via a large Fresnel lens onto the photoreceiver. A Raman amplifier has been designed to amplify the TDLS optical signal generated by a 1650.95nm DFB laser diode to over 1W CW. Combining the high power output of the Raman amplifier and the highly sensitive TDLS technique, we may report 100ppm.m sensitivity at more than 100m by extrapolation.

AB - We report a long-range near-IR methane sensor for inspection of natural gas collection, storage sites and pipeline networks. The principle is that a laser carrier beam is directed at the target surface across a test path and the backscatter from the surface is collected via a large Fresnel lens onto the photoreceiver. A Raman amplifier has been designed to amplify the TDLS optical signal generated by a 1650.95nm DFB laser diode to over 1W CW. Combining the high power output of the Raman amplifier and the highly sensitive TDLS technique, we may report 100ppm.m sensitivity at more than 100m by extrapolation.

KW - remote methane sensor

KW - TDLS

KW - tuneable diode laser spectroscopy

U2 - 10.1117/12.835810

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JO - Proceedings of SPIE the International Society for Optical Engineering

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IS - 750350

ER -

Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source

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Keywords

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