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Microelectronics in gas sensing and glimpses of other electro optic activities

Jon Kristian Hagene Norsk Elektro Optikk AS (NEO) Norway. Microelectronics in gas sensing and glimpses of other electro optic activities. Norsk Elektro Optikk AS, NEO. NEO is a SME located in Norway Founded in 1985, working within the field of electro-optics

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Microelectronics in gas sensing and glimpses of other electro optic activities

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  1. Transatlantic Science Week 2011 Jon Kristian Hagene Norsk Elektro Optikk AS (NEO) Norway Microelectronics in gas sensing and glimpses of other electro optic activities

  2. Transatlantic Science Week 2011 Norsk Elektro Optikk AS, NEO • NEO is a SME located in Norway • Founded in 1985, working within the field of electro-optics • Main fields of work is tuneable diode laser spectroscopy, pipeline inspection/digital imaging/underwater optics and hyperspectral imaging

  3. Transatlantic Science Week 2011 NEO History • Offspring from the Norwegian Defence Research Establishment (1985) • Early idea to do research for the offshore oil and gas industry, underwater optics, but oil price dropped 50% in 1985/86 • Space projects for the European Space Agency, ESA. From start to mid nineties, new space activity in recent years.

  4. Transatlantic Science Week 2011 NEO History • First gas monitor prototype in 1990 • Laser based (TDLAS) in sales from 1995 • Underwater optics/pipeline inspection back in the mid nineties as well as recent years

  5. Transatlantic Science Week 2011 Current projects, micro/nano • LaserGas III, 3rd generation TDLAS. Funding: own + “Skattefunn” • Optical Microphone, photoacoustic spectroscopy, SINTEF main actor, NEO industrial partner for gas sensing, Funding of SINTEF: NRC, NEO: own • CLARITY, System on a chip, NEO industrial partner in European project. Funding: EU, FP7. (3 years)

  6. Transatlantic Science Week 2011 LASERGAS III

  7. Transatlantic Science Week 2011 LaserGas III • Gas monitoring very important for NEO • 3rd generation TDLAS gas monitor • move from 2nd harmonic detection (partly analogue processing) to more digital processing • miniaturised electronics • more approvals, Ex-d, SIL2 etc.

  8. Transatlantic Science Week 2011 LaserGas III stack & portable

  9. Transatlantic Science Week 2011 Transmitter part

  10. Transatlantic Science Week 2011 Receiver part

  11. Transatlantic Science Week 2011 Applications / development • Currently many industrial applications, process control, emissions monitoring, safety systems etc. • Adding new applications in food industry and medical based on LG3 platform • Near future: move from Near IR to Mid IR

  12. Transatlantic Science Week 2011 OPTICAL MICROPHONE

  13. Transatlantic Science Week 2011 Objective with new development • Stronger gas absorption lines in Mid IR give better sensitivity, detect new gases • However, detectors might be a problem: noisy and/or expensive • Developing other detection techniques...

  14. Transatlantic Science Week 2011 “Optical microphone“ • Co-operation with SINTEF, Norway (patent) • SINTEF funded by the Research Counsil of Norway • Intermediate step using a quartz tuning fork to measure gas (QEPAS) • Final version will be using a micro machined “microphone” to boost gas detection sensitivity

  15. Transatlantic Science Week 2011 What is a Quartz tuning fork?

  16. Photo Acoustic Spectroscopy

  17. Transatlantic Science Week 2011 Key elements of QEPAS • Laser modulated at 16 kHz (sine on top of ramp) • QTF mounted in small gas cell with micro resonator that gives up to 10X amplification • QTF resonance frequency 32 kHz • We are using existing electronics design (LGII, 2nd harmonic detection)

  18. Transatlantic Science Week 2011 QEPAS set-up

  19. Transatlantic Science Week 2011 QEPAS set-up mechanics

  20. Transatlantic Science Week 2011 Early QEPAS results • Got a very robust micro resonator design compared to others, industrial use possible • First version has a detection limit of 10 ppm for CH4 (methane), (best published results 2 ppm)

  21. 4. Photo-acoustics • Photoacoustic spectroscopy was invented by Alexander Graham Bell, ~1880 • Key item: a sensitive microphone • The world’s most sensitive microphone is currently being developed by SINTEF • Detection of <1ppb concentration of gasses possible (comparable to GC-MS) Patented SINTEF optical microphone Gas Microphone Sound Infrared ight

  22. Transatlantic Science Week 2011 Optical microphone summary • Use other lasers than we use today, from NIR to Mid IR, Quantuum cascade lasers (QCL) • Improved sensitivity and new gases • Optical detection instead of current noisy (and/or expensive) detectors • Enable new gas monitoring applications pushing technology forward

  23. Transatlantic Science Week 2011 “CLARITY”

  24. Transatlantic Science Week 2011 • CLARITY, European Project, FP7 • Recently started, duration 3 years

  25. Transatlantic Science Week 2011 Clarity project • Spectroscopy in Mid IR and detection in Near IR (8 um spectroscopy, 1.5-2 um detectors (InGaAs)) • Improved S/N ratio, better detection limits • Ultimate goal: a system on a chip • Compact uLtrA-efficient mid-infRared photonIc sysTems based on low noise quantum cascade laser sources, wide band frequencY converters and near-infrared photodetectors • http://www.clarity-project.eu/

  26. Transatlantic Science Week 2011 OTHER EO ACTIVITIES

  27. Transatlantic Science Week 2011 OPTOPIG

  28. Transatlantic Science Week 2011 Optopig HW and results

  29. Transatlantic Science Week 2011 TILEFISH

  30. Transatlantic Science Week 2011 TileFish a AUV LED Camera (Left figure FFI)

  31. Transatlantic Science Week 2011 TileFish results

  32. Transatlantic Science Week 2011 WATSEN

  33. Transatlantic Science Week 2011 WatSen specification • Project for European Space Agency, ESA, «breadboard» • Open University, UK, main contractor, NEO main contractor for microscope part • ATR spectrometer 5.5um-10.8 um • Microscope 1280x1024 pixels

  34. Transatlantic Science Week 2011 WatSen Water Sensor for Mars

  35. Transatlantic Science Week 2011 THE END

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