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2011

Bain, James Roderic Peter and Johnstone, Walter and Ruxton, Keith Crawford and Stewart, George and Lengden, Michael and Duffin, Kevin (2011) Recovery of absolute gas absorption line shapes using tunable diode laser spectroscopy with wavelength modulation - Part 2 : experimental investigation. Journal of Lightwave Technology, 29 (7). pp. 987-996. ISSN 0733-8724

Stewart, George and Johnstone, Walter and Bain, James Roderic Peter and Ruxton, Keith Crawford and Duffin, Kevin (2011) Recovery of absolute gas absorption line shapes using tuneable diode laser spectroscopy with wavelength modulation- part 1 : theoretical analysis. Journal of Lightwave Technology, 29 (6). pp. 811-821. ISSN 0733-8724

2010

Ruxton, Keith C. and Chakraborty, Arup Lal and Johnstone, W. and Lengden, Michael and Stewart, G. and Duffin, K. (2010) Tunable diode laser spectroscopy with wavelength modulation : elimination of residual amplitude modulation in a phasor decomposition approach. Sensors and Actuators B: Chemical, 150 (1). pp. 367-375. ISSN 0925-4005

Armstrong, I. and Johnstone, W. and Duffin, K. and Lengden, Michael and Chakraborty, Arup Lal and Ruxton, Keith C. (2010) Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy. Journal of Lightwave Technology, 28 (10). pp. 1435-1442. ISSN 0733-8724

2009

Culshaw, Brian and Johnstone, W. and Stewart, G. and Duffin, K. and Mauchline, Iain S. and Walsh, Douglas (2009) Gas sensing based on optical fibre coupled diode laser spectroscopy : a new approach to sensor systems for safety monitoring. In: 9th IMVC Mine Ventilation Conference, 2009-11-10.

Ruxton, K.C. and Chakraborty, A. and McGettrick, A.J. and Duffin, K. and Stewart, G. (2009) Recent advance in tunable diode laser spectroscopy with background RAM nulling for industrial applications. In: 20th International Conference on Optical Fibre Sensors, 2009-10-05.

Ruxton, Keith C. and Chakraborty, Arup Lal and McGettrick, A.J. and Duffin, K. and Johnstone, W. and Stewart, G. (2009) Recent advance in tunable diode-laser spectroscopy with background RAM nulling for industrial applications. Proceedings of SPIE: The International Society for Optical Engineering, 7503 (750313).

Mitchell, D.M. and Duffin, K. and Johnstone, W. (2009) Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source. In: 20th International Conference on Optical Fibre Sensors, 2009-10-05.

Mitchell, D. and Duffin, K. and Johnstone, W. (2009) Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source. Proceedings of SPIE the International Society for Optical Engineering, 7503 (750350). ISSN 0277-786X

Bain, J.R.P. and Stewart, G. and Duffin, K. and Lengden, M. and Ruxton, K.C. and Johnstone, W. (2009) Recovery of absolute gas absorption lineshapes using TDLS at arbitrary modulation indices. In: UNSPECIFIED.

Bain, J.R.P. and Stewart, G. and Duffin, K. and Lengden, M. and Ruxton, K.C. and Johnstone, W. (2009) Recovery of gas absorption lineshapes using TDLS at arbitrary modulation indices. In: International Conference on Field Laser Applications in Industry and Research, 2009-09-06 - 2009-09-11, Hotel am Badersee.

Mitchell, D.M. and Duffin, K. and Johnstone, W. (2009) Remote methane sensor using Tunable Diode Laser Spectroscopy (TDLS) via a 1W Raman So. In: 20th International Conference on Optical Fibre Sensors, 2009-10-05.

Ruxton, K.C. and Chakraborty, A. and McGettrick, A.J. and Duffin, K. and Johnstone, W. and Stewart, G. (2009) Diode laser spectroscopy using a calibration free phasor decomposition approach with RAM nulling. In: 7th International Conference on Tunable Diode Laser Spectroscopy, 2009-07-13 - 2009-07-17.

Mitchell, D.M. and Duffin, K. and Johnstone, W. (2009) Remote methane sensor using raman amplified open path TDLS. In: 7th International Conference on Tunable Diode Laser Spectroscopy, 2009-07-13 - 2009-07-17.

Chakraborty, Arup Lal and Ruxton, Keith C. and Johnstone, W. and Lengden, Michael and Duffin, K. (2009) Elimination of residual amplitude modulation in TDLS-WMS. In: Conference on Lasers and Electro-Optics/ European Quantum Electronics Conference (CLEO Europe/EQEC-2009), 2009-06-14 - 2009-06-19.

Chakraborty, Arup Lal and Ruxton, Keith C. and Johnstone, W. and Lengden, Michael and Duffin, K. (2009) Elimination of residual amplitude modulation in tunable diode laser wavelength modulation spectroscopy using an optical fiber delay line. Optics Express, 17 (12). pp. 9602-9607. ISSN 1094-4087

Mitchell, D.M. and Duffin, K. and Johnstone, W. (2009) Remote tuneable diode laser spectroscopy (TDLS) via a 1W Raman source. Proceedings of SPIE the International Society for Optical Engineering, 7356. 73560Y. ISSN 0277-786X

Ruxton, Keith C. and Chakraborty, Arup Lal and McGettrick, A.J. and Duffin, K. and Johnstone, W. and Stewart, G. (2009) Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling. In: 7th International Conference on Tunable Diode Laser Spectroscopy, 2009-07-13 - 2009-07-17.

Mitchell, D. and Duffin, K. and Johnstone, W. (2009) Remote methane sensor using TDLS via a high power Raman amplified source. In: International Conference on Field Laser Applications in Industry and Research, 2009-09-06 - 2009-09-11, Hotel am Badersee. (Unpublished)

2008

Johnstone, W. and Duffin, K. and Mitchell, David Michael (2008) Remote gas detection using tunable diode laser spectroscopy with high power rare earth and raman fibre amplifiers. In: Photonics 2008: International Conference on Fiber Optics and Photonics, 2008-12-13 - 2008-12-17. (Unpublished)

Duffin, K. and Johnstone, W. and McGettrick, A.J. and Moodie, D. and Stewart, G. and Thursby, G.J. and Culshaw, B. (2008) Chemical sensor networks for gas detection and environmental monitoring. Current Analytical Chemistry, 4 (4). pp. 391-402. ISSN 1573-4110

McGettrick, A.J. and Johnstone, W. and Duffin, K. and Stewart, G. (2008) Calibration free gas composition measurements for industrial process control using a phasor decomposition approach to tunable diode laser spectroscopy. In: Photon 08, 2008-08-25 - 2008-08-28. (Unpublished)

Johnstone, W. and McGettrick, A.J. and Duffin, K. and Cheung, A. and Stewart, G. (2008) Tunable diode laser spectroscopy for industrial process applications : system characterization in conventional and new approaches. IEEE Sensors Journal, 8 (7). pp. 1079-1088. ISSN 1530-437X

McGettrick, A.J. and Duffin, K. and Johnstone, W. and Stewart, G. and Moodie, D.G. (2008) Tunable diode laser spectroscopy with wavelength modulation : a phasor decomposition method for calibration-free measurements of gas concentration and pressure. Journal of Lightwave Technology, 26 (4). pp. 432-440. ISSN 0733-8724

Johnstone, W. and McGettrick, A.J. and Duffin, K. and Stewart, G. (2008) Calibration free, optical measurements of gas composition for industrial process control in harsh environments. In: Fifth International Conference on Condition Monitoring and Machine Failure Prevention Technologies, 2008-07-15 - 2008-07-18. (Unpublished)

Stewart, G. and Johnstone, W. and Arsad, N. and Duffin, K. (2008) Tunable diode and fibre laser spectroscopy in the near-IR for measurement of gas parameters. Proceedings of SPIE: The International Society for Optical Engineering, 7003. p. 700319.

2007

Duffin, K. and McGettrick, A.J. and Johnstone, W. and Stewart, G. and Moodie, D. (2007) Tunable diode laser spectroscopy with wavelength modulation : a calibration-free approach to the recovery of absolute gas absorption line-shapes. Journal of Lightwave Technology, 25 (10). pp. 3114-3125. ISSN 0733-8724

Duffin, K. and McGettrick, A.D. and Johnstone, W. and Stewart, G. (2007) An alternative approach to wavelength modulation spectroscopy for absolute measurements of gas parameters in industrial processes. In: Chemical and Biological Sensors for Industrial and Environmental Monitoring III, 2006-07-12.

2005

Cheung, A. and Culshaw, B. and Duffin, K. and Johnstone, W. and McGettrick, A.D. and Mauchline, I.S. and Moodie, D. (2005) Gas spectroscopy in the near infrared optical fibre network. In: Australasian Conference on Optics, Lasers and Spectroscopy, 2005-12-08.

Johnstone, Walter and Duffin, Kevin and Mcgettrick, Andrew James and Stewart, George and CHEUNG, Amy and Moodie, D. (2005) Tuneable diode laser spectroscopy over optical fibres for gas measurements in harsh industrial environments. Proceedings of SPIE: The International Society for Optical Engineering, 5952. p. 595206.