Contact Dr Jane Hodgkinson
- Tel: +44 (0) 1234 758325
- Email: j.hodgkinson@cranfield.ac.uk
- ORCID
Areas of expertise
- Instrumentation, Sensors and Measurement Science
- Sensor Technologies
Background
Dr Jane Hodgkinson joined Cranfield University from the natural gas industry, where she was responsible for developing and testing new sensing technologies, particularly optical sensors for gas leaks. Jane obtained her PhD in 1998 from the Optoelectronics Research Centre at the University of Southampton, working in a collaboration with United Utilities on photoacoustic and photothermal detection of trace chemicals in water. She gained her first degree in Natural Sciences (Physics, 1st class hons) from Cambridge University in 1989.
Developing advanced tools for optical gas detection with improved levels of robustness and lower complexity, aiming to move this important technique from the laboratory and into the field.
Current activities
Use of diffusely scattering surfaces and integrating spheres within optical gas absorption cells, to ease alignment problems and reduce optical interference fringes. This includes investigating the effects of associated interference phenomena, including laser speckle behaviour in TDLS.
Development of next generation non-dispersive infrared gas sensors, using newly developed light sources and configurations for folded light paths.
Novel, low volume gas cells for healthcare applications.
Optical fibre gas sensors, exploiting synergies within the Centre and using in-house fabrication facilities.
Technology transfer to the gas detection industry, including collaborative projects with Geotechnical Instruments Ltd, Alphasense Ltd and Cascade Technologies Ltd.
Chair of the Gas Analysis and Sensing Group (GASG), a UK technology club bringing together users, sensor and instrument manufacturers, consultants and academics. See www.gasg.info
Clients
Funding for this work has been provided by:
Engineering and Physical Sciences Research Council (EPSRC)
Natural Environment Research Council (NERC)
The Royal Society
Technology Strategy Board (TSB)
Alphasense Ltd
Geotechnical Instruments Ltd
AWE Plc
Cascade Technologies Ltd.
Publications
Articles In Journals
- Davis NM, Francis D, Hodgkinson J & Tatam RP. (2023). Compact methane sensor using an integrating sphere and interband cascade laser at 3313 nm. Sensors and Actuators B: Chemical, 389(August)
- Bremner JAA, Kissinger T, Hodgkinson J & Tatam RP. (2021). Fibre-coupled, multiplexed methane detection using range-resolved interferometry. Journal of Physics: Photonics, 3(2)
- Bergin S, Hodgkinson J, Francis D & Tatam RP. (2020). Ratiometric pathlength calibration of integrating sphere-based absorption cells. Optics Express, 28(13)
- Lourenço C, Francis D, Fowler DP, Staines SE, Hodgkinson J, .... (2020). Instrumentation for quantitative analysis of volatile compounds emission at elevated temperatures. Part 2: Analysis of carbon fibre reinforced epoxy composite. Scientific Reports, 10(1)
- Lourenço C, Bergin S, Hodgkinson J, Francis D, Staines SE, .... (2020). Instrumentation for quantitative analysis of volatile compounds emission at elevated temperatures. Part 1: Design and implementation. Scientific Reports, 10(1)
- Nixon J, Hodgkinson J & Bennett C. (2020). Modified immersion suits for helicopter aircrew: Evidence for improved conspicuity from sea trials. Safety Science, 130
- Davis NM, Lynch SG, Gates JC, Hodgkinson J, Smith PGR, .... (2019). Spectroscopic gas detection using a Bragg grating - stabilized external cavity laser, custom written in planar integrated silica-on-silicon. Optics Express, 27(20)
- Davenport JJ, Hodgkinson J, Saffell JR & Tatam RP. (2018). Non-Dispersive Ultra-Violet Spectroscopic Detection of Formaldehyde Gas for Indoor Environments. IEEE Sensors Journal, 18(6)
- Asmari A, Hodgkinson J, Chehura E, Staines SE & Tatam RP. (2017). All-electronic frequency stabilization of a DFB laser diode. Optics Express, 25(10)
- Francis D, Hodgkinson J, Livingstone B, Black P & Tatam RP. (2016). Low-volume, fast response-time hollow silica waveguide gas cells for mid-IR spectroscopy. Applied Optics, 55(25)
- Bergin S, Hodgkinson J, Francis D & Tatam RP. (2016). Integrating cavity based gas cells: a multibeam compensation scheme for pathlength variation. Optics Express, 24(12)
- Davenport JJ, Hodgkinson J, Saffell JR & Tatam RP. (2016). A measurement strategy for non-dispersive ultra-violet detection of formaldehyde in indoor air: spectral analysis and interferent gases. Measurement Science and Technology, 27(1)
- Francis D, Masiyano D, Hodgkinson J & Tatam RP. (2015). A mechanically stable laser diode speckle interferometer for surface contouring and displacement measurement. Measurement Science and Technology, 26(5)
- Davenport JJ, Hodgkinson J, Saffell JR & Tatam RP. (2015). Noise analysis for CCD-based ultraviolet and visible spectrophotometry. Applied Optics, 54(27)
- Chowdhury SA, Correia R, Francis D, Brooks SJ, Jones BJS, .... (2015). An Optical Fiber Hydrogen Sensor Using a Palladium-Coated Ball Lens. Journal of Lightwave Technology, 33(12)
- Francis D, Hodgkinson J, Livingstone B & Tatam RP. (2015). Quantum cascade laser light propagation through hollow silica waveguides. Applied Physics B, 119(1)
- Hodgkinson J & Tatam RP. (2013). Optical gas sensing: a review. Measurement Science and Technology, 24(1)
- Hodgkinson J, Smith R, Ho WO, Saffell JR & Tatam RP. (2013). Non-dispersive infra-red (NDIR) measurement of carbon dioxide at 4.2μm in a compact and optically efficient sensor. Sensors and Actuators B: Chemical, 186
- Hodgkinson J, Masiyano D & Tatam RP. (2013). Using integrating spheres with wavelength modulation spectroscopy: effect of pathlength distribution on 2nd harmonic signals. Applied Physics B, 110(2)
- Hodgkinson J, Masiyano D & Tatam RP. (2011). Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 1: single and dual pass cells.
- Hodgkinson J & Pride RD. (2010). Methane-specific gas detectors: the effect of natural gas composition. Measurement Science and Technology, 21(10)
- Masiyano D, Hodgkinson J & Tatam RP. (2010). Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 2: Integrating spheres. Applied Physics B, 100(2)
- Hodgkinson J, Masiyano D & Tatam RP. (2010). Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 1: single and dual pass cells. Applied Physics B, 100(2)
- Hodgkinson J, Masiyano D & Tatam RP. (2009). Using integrating spheres as absorption cells: path-length distribution and application of Beer's law. Applied Optics, 48(30)
- Masiyano D, Hodgkinson J, Schilt S & Tatam RP. (2009). Self-mixing interference effects in tunable diode laser absorption spectroscopy. Applied Physics B, 96(4)
- HODGKINSON, J. (2009). Gas sensors 2. The markets and challenges. Nanotechnology Perceptions, 5(1)
- HODGKINSON, J. (2009). Gas sensors 1. The basic technologies and applications. Nanotechnology Perceptions, 5(1)
- Masiyano D, Hodgkinson J & Tatam RP. (2008). Use of diffuse reflections in tunable diode laser absorption spectroscopy: implications of laser speckle for gas absorption measurements. Applied Physics B, 90(2)
- Masiyano D, Hodgkinson J & Tatam RP. (2007). Methodology for investigation of diffuse reflections in tunable diode laser absorption spectroscopy. Journal of Physics: Conference Series, 76(1)
- Hodgkinson J, Shan Q & Pride RD. (2006). Detection of a simulated gas leak in a wind tunnel. Measurement Science and Technology, 17(6)
- Gibson G, Well BV, Hodgkinson J, Pride R, Strzoda R, .... (2006). Imaging of methane gas using a scanning, open-path laser system. New Journal of Physics, 8(2)
- Hodgkinson J, Johnson M & Dakin JP. (2005). Performance of a photothermal detector with turbid liquids. Applied Optics, 44(20)
- Hodgkinson J, Johnson M & Dakin JP. (2005). Quantitative analysis of a closed photoacoustic cell that uses a high compliance piezoelectric transducer. Journal of Applied Physics, 98(8)
- Well BV, Murray S, Hodgkinson J, Pride R, Strzoda R, .... (2005). An open-path, hand-held laser system for the detection of methane gas. Journal of Optics A: Pure and Applied Optics, 7(6)
- Hodgkinson J, Johnson M & Dakin JP. (2000). Comparison of self-referencing techniques for photothermal detection of trace compounds in water. Sensors and Actuators B: Chemical, 67(3)
- Hodgkinson J, Johnson M & Dakin JP. (1998). Photothermal detection of trace optical absorption in water by use of visible-light-emitting diodes. Applied Optics, 37(31)
- Hodgkinson J, Johnson M & Dakin JP. (1998). Photothermal detection of trace compounds in water, using the deflection of a water meniscus. Measurement Science and Technology, 9(8)
Conference Papers
- Binaei N, Hodgkinson J, Mullaney K, Chehura E, Williams S, .... (2023). In-process optical monitoring of contamination in an additively manufactured titanium alloy
- Francis D, Hodgkinson J & Tatam R. (2023). A pulsed laser spectrometer for volatile organic compound measurement
- Davis NM, Hodgkinson J, Browne C, Nesnas K, Wright A, .... (2021). Standoff measurement of spectral changes in UV-aged bitumen
- Bremner J, Kissinger T, Hodgkinson J & Tatam R. (2020). A comparison of topologies used in an interferometric gas detection technique
- Hodgkinson J, Nixon J, Bennett C & Tatam RP. (2020). Field investigation of retroreflective materials for enhanced target detection in maritime search and rescue
- Mullaney K, Hodgkinson J, Staines S & Tatam R. (2019). Wavelength-locking of a semiconductor laser using an electronic technique
- Davis NM, Staines SE, Hodgkinson J, Bergin S, Francis D, .... (2018). In-situ pathlength calibration of integrating spheres used in measurement of absorbance
- Francis D, Hodgkinson J, Walton C, Sizer J, Black P, .... (2017). Mid-IR spectroscopic instrumentation for point-of-care diagnosis using a hollow silica waveguide gas cell
- Davis NM, Hodgkinson J, Francis D & Tatam RP. (2016). Sensitive detection of methane at 3.3 μm using an integrating sphere and interband cascade laser
- Bergin S, Hodgkinson J, Francis D & Tatam RP. (2015). A method for continuous in-situ pathlength calibration of integrating sphere based gas cells
- Chowdhury SA, Correia R, Francis D, Brooks SJ, Jones BJS, .... (2014). Palladium coated ball lens for optical fibre refractometry based hydrogen sensing
- Asmari A, Hodgkinson J, Chehura E, Staines SE & Tatam RP. (2014). Wavelength stabilisation of a DFB laser diode using measurement of junction voltage
- Davenport JJ, Hodgkinson J, Saffell JR & Tatam RP. (2014). Formaldehyde sensor using non-dispersive UV spectroscopy at 340nm
- Lynch SG, Chen F, Gates JC, Holmes C, Staines SE, .... (2014). Bragg-grating-stabilized external cavity lasers for gas sensing using tunable diode laser spectroscopy
- Chowdhury SA, Chehura E, Correia R, Francis D, Hodgkinson J, .... (2013). Stability comparison between two optical refractometer techniques
- Chen F, Hodgkinson J, Staines S, James S & Tatam R. (2012). A 1.65 µm region external cavity laser diode using an InP gain chip and a fibre Bragg grating
- Davenport JJ, Hodgkinson J, Saffell JR & Tatam RP. (2012). Noise analysis of a CCD based ultra-violet spectrometry system
- Hodgkinson J, Smith R, Ho W, Saffell JR & Tatam RP. (2012). A low cost, optically efficient carbon dioxide sensor based on nondispersive infra-red (NDIR) measurement at 4.2μm
- Kannath A, Hodgkinson J, Gillard RG, Riley RJ & Tatam RP. (2011). A VCSEL based system for on-site monitoring of low level methane emission
- Masiyano D, Hodgkinson J & Tatam RP. (2011). Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 2: Integrating spheres
- Hodgkinson J, van Well B, Padgett M & Pride RD. (2006). Modelling and interpretation of gas detection using remote laser pointers
- Pride R, Hodgkinson J, Padget M, Van Well B, Strzoda R, .... (2004). Implementation of optical technologies for portable gas leak detection
- Hodgkinson J, Pride R, Tandy C, Moodie DG & Stewart G. (2000). Field evaluation of a multipoint fiber optic sensor array for methane detection (OMEGA)
- MacKenzie SJ, Hodgkinson J, Johnson M & Dakin JP. (1997).
Very efficient sampling technique for fiber-remote optical emission spectroscopy of aqueous solutions - Chen F, Hodgkinson J, Staines S, James S & Tatam R. A 1.65 µm region external cavity laser diode using an InP gain chip and a fibre Bragg grating