Sensor Design

From LAGWiki

We develop integrated laser sensors for combustion and process monitoring applications. We exploit latest advances in photonic device technology such as supercontinuum fibre lasers and visible diode lasers to develop novel sensors that push sensitivity, speed and accuracy beyond the capabilities of current technology. Our sensors are used to study aspects of pollutant formation in flames, for characterisation of turbulent reacting flows, for research into Solid Oxide Fuel Cells.

[edit] Applications

Flame Thermometry Gas Phase Sensing Microfluidic Sensors

[edit] Technology development

Diode Laser Induced Fluorescence thermometry Extended Cavity Diode Laser Design Wavelength Agile Sensing Supercontinuum Generation Wide Bandwidth Dispersion Measurements Broadband cavity enhanced absorption spectroscopy Evanescent wave cavity enhanced absorption spectroscopy

[edit] Theoretical research

Modelling of Supercontinuum Generation

[edit] Techniques we use

Absorption Spectroscopy Laser Induced Fluorescence Cavity Enhanced Absorption Spectroscopy Photoacoustic Spectroscopy Nonlinear Frequency Conversion Techniques Photonic Crystal Fibres

[edit] Collaborators

Dr. P. Desgroux, CNRS Lille, France	Prof. R. Jones, Dept. of Chemistry, Cambridge	Dr S. Mackenzie, Dept. of Chemistry, Cambridge	Dr J. Dennis, Dept. of Chemical Engineering, Cambridge
Prof. H. Miller, George Washington University, USA	Dr S. Scott, Dept. of Engineering, Cambridge	Prof. R. Hernberg, Tampere University of Technology, Finland	Prof. P. Unwin, University of Warwick

[edit] Sponsors

Royal Society	EPSRC	Leverhulme Trust
Thorlabs UK	Rolls-Royce Plc.	Seventh Research Framework Programme of the European Union

[edit] Recent publications

• Schnippering M, Unwin PR, Hult J, Laurila T, Kaminski CF, Langridge JM, Jones RL, Mazurenka M, Mackenzie SR, "Evanescent Wave Broadband Cavity Enhanced Absorption Spectroscopy using Supercontinuum Radiation: A New Probe of Electrochemical Processes", Electrochemistry Communications 10:1827-1830 (2008) (external link)
• Kaminski CF, Watt RS, Elder AD, Frank JH, Hult J, "Supercontinuum radiation for applications in chemical sensing and microscopy" Applied Physics B 92:367-378 (2008) (external link)
• Langridge J, Laurila T, Watt RS, Jones RL, Kaminski CF, Hult, J "Cavity enhanced absorption spectroscopy of multiple trace gas species using a supercontinuum radiation source" Optics Express 16(14):10178-10188 (2008)(external link)
• Watt, RS; Kaminski, CF; Hult, J "Generation of supercontinuum radiation in conventional single-mode fibre and its application to broadband absorption spectroscopy", Applied Physics B 90:47-53(2008) (external link)
• Burns IS, Lamoureux M, Kaminski CF, Hult J, Desgroux P, "Diode laser atomic fluorescence temperature measurements in low-pressure flames", Applied Physics B 93:907-914 (2008) (external link)
• Hult, J; Watt, RS; Kaminski, CF "High bandwidth absorption spectroscopy with a dispersed supercontinuum source", Optics Express 15:11385-11395 (2007) (external link)
• Hult, J "A Fourth-Order Runge-Kutta in the Interaction Picture Method for Simulating Supercontinuum Generation in Optical Fibres", Journal of Lightwave Technology 25:3770-3775 (2007) (external link)