J
Jane Hodgkinson
Researcher at Cranfield University
Publications - 59
Citations - 1970
Jane Hodgkinson is an academic researcher from Cranfield University. The author has contributed to research in topics: Laser & Tunable diode laser absorption spectroscopy. The author has an hindex of 14, co-authored 57 publications receiving 1635 citations. Previous affiliations of Jane Hodgkinson include University of Southampton & Loughborough University.
Papers
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Journal ArticleDOI
Optical gas sensing: a review
Jane Hodgkinson,Ralph P. Tatam +1 more
TL;DR: In this article, the authors present the basis for each technique, recent developments in methods and performance limitations, and present a performance comparison of different techniques, taking data reported over the preceding decade, and draw conclusions from this benchmarking.
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Non-dispersive infra-red (NDIR) measurement of carbon dioxide at 4.2μm in a compact and optically efficient sensor
TL;DR: In this paper, the authors present a new design for non-dispersive infra-red (NDIR) gas detection, making use of low-cost injection moulding technology, which pays particular attention to the problem of maintaining a high optical throughput while providing an acceptable optical pathlength for gas detection.
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Using integrating spheres as absorption cells: path-length distribution and application of Beer's law
TL;DR: A full numerical model of the path-length distribution in an integrating sphere used as a multipass optical cell for absorption measurements is modeled and a new analytical relationship is introduced that describes this behavior for high reflectivity spheres.
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An open-path, hand-held laser system for the detection of methane gas
Ben van Well,Stuart Murray,Jane Hodgkinson,Russ D. Pride,Rainer Strzoda,Graham M. Gibson,Miles J. Padgett +6 more
TL;DR: In this article, an open-path hand-held gas detector incorporating a distributed feedback InGaAs laser diode at 1.65 µm was developed, where the emitted laser beam was backscattered from nearby surfaces, collected and focused onto an amplified InGaA detector using a 150 mm diameter plastic Fresnel lens.
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Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 1: Single and dual pass cells.
TL;DR: In this article, a single pass transmissive gas cell has been studied using wavelength modulation spectroscopy to measure methane at 1651 nm, showing a short-term noise equivalent absorbance (NEA, 1σ) of 2×10−5, but longer term drift of up to 3x10−4 over 22 hours.