Dr. Mark G. Allen Profile

Dr. Mark G. Allen

Vice President Photonics at Physical Sciences Inc

SPIE Involvement:

Author

Publications (29)

Proceedings Article | 8 May 2018 Paper

Standoff detection from diffusely scattering surfaces using dual quantum cascade laser comb spectroscopy

Joel Hensley, Justin Brown, Mark Allen, Markus Geiser, Pitt Allmendinger, Markus Mangold, Andreas Hugi, Pierre Juoy, Jérôme Faist

Proceedings Volume 10638, 1063820 (2018) https://doi.org/10.1117/12.2305190

KEYWORDS: Quantum cascade lasers, Sensors, Spectroscopy, Free space optics, Standoff detection, Laser scattering, Scattering, Signal detection, Absorption, Long wavelength infrared

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Proceedings Article | 25 May 2016 Paper

QCL-based standoff and proximal chemical detectors

Julia Dupuis, Joel Hensley, Bogdan Cosofret, Daisei Konno, Phillip Mulhall, Thomas Schmit, Shing Chang, Mark Allen, William Marinelli

Proceedings Volume 9836, 98362F (2016) https://doi.org/10.1117/12.2223038

KEYWORDS: Sensors, Quantum cascade lasers, Reflectivity, Speckle, Signal to noise ratio, Target detection, Receivers, Liquids, Solids

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Proceedings Article | 29 May 2013 Paper

Low-cost lightweight airborne laser-based sensors for pipeline leak detection and reporting

Michael Frish, Richard Wainner, Matthew Laderer, Mark Allen, James Rutherford, Paul Wehnert, Sean Dey, John Gilchrist, Ron Corbi, Daniele Picciaia, Paolo Andreussi, David Furry

Proceedings Volume 8726, 87260C (2013) https://doi.org/10.1117/12.2015813

KEYWORDS: Methane, Sensors, Fourier transforms, Laser applications, Unmanned aerial vehicles, Transceivers, Gas sensors, Remote sensing, Gases, Process control

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Proceedings Article | 4 February 2013 Paper

Progress toward mid-IR chip-scale integrated-optic TDLAS gas sensors

Michael Frish, Raji Shankar, Irfan Bulu, Ian Frank, Matthew Laderer, Richard Wainner, Mark Allen, Marko Lončar

Proceedings Volume 8631, 86310E (2013) https://doi.org/10.1117/12.2008953

KEYWORDS: Sensors, Mid-IR, Silicon, Waveguides, Chemical elements, Laser packaging, Laser stabilization, Integrated optics, Gas sensors, Photonic crystals

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Proceedings Article | 18 May 2012 Paper

Monolithic integrated-optic TDLAS sensors

Michael Frish, David Scherer, Richard Wainner, Mark Allen, Raji Shankar, Marko Loncar

Proceedings Volume 8374, 83740I (2012) https://doi.org/10.1117/12.918659

KEYWORDS: Sensors, Laser stabilization, Chemical elements, Quantum cascade lasers, Refractive index, Integrated optics, Chemical analysis, Absorption, Temperature metrology, Industrial chemicals

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SPIE Journal Paper | 1 November 2010

Interband cascade laser-based sensor for ambient CH₄

David Sonnenfroh, Richard Wainner, Mark Allen, Ruth Varner

OE, Vol. 49, Issue 11, 111118, (November 2010) https://doi.org/10.1117/12.10.1117/1.3498769

KEYWORDS: Sensors, Quantum cascade lasers, Absorption, Mirrors, Spectroscopy, Methane, Optical engineering, Climate change, Calibration, Semiconductor lasers

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Proceedings Article | 14 February 2008 Paper

Accuracy and linearity of time-domain THz paint thickness measurements

David Cook, Seonkyung Lee, Scott Sharpe, Mark Allen

Proceedings Volume 6893, 68930H (2008) https://doi.org/10.1117/12.763900

KEYWORDS: Terahertz radiation, Reflection, Silicon, Sensors, Calibration, Data modeling, Magnetism, Interfaces, Coating, Precision measurement

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Proceedings Article | 13 February 2008 Paper

Wafer-fused orientation-patterned GaAs

Jin Li, David Fenner, Krongtip Termkoa, Mark Allen, Peter Moulton, Candace Lynch, David Bliss, William Goodhue

Proceedings Volume 6875, 68750H (2008) https://doi.org/10.1117/12.762315

KEYWORDS: Gallium arsenide, Semiconducting wafers, Wafer bonding, Etching, Crystals, Interfaces, Photoresist materials, Lithography, Optical lithography, Wet etching

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Proceedings Article | 2 October 2007 Paper

The next generation of TDLAS analyzers

M. Frish, M. Laderer, R. Wainner, A. Wright, A. Patel, J. Stafford-Evans, J. Morency, M. Allen, B. Green

Proceedings Volume 6765, 676506 (2007) https://doi.org/10.1117/12.738195

KEYWORDS: Sensors, Transceivers, Signal processing, Carbon monoxide, Absorption, Modulation, Methane, Gases, Receivers, Carbon dioxide

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Proceedings Article | 17 October 2006 Paper

A mid-IR ICL-based sensor for field measurements of ambient CH4

D. Sonnenfroh, R. Varner, M. Silva, M. Allen

Proceedings Volume 6386, 63860Q (2006) https://doi.org/10.1117/12.692861

KEYWORDS: Sensors, Carbon monoxide, Quantum cascade lasers, Climate change, Methane, Mid-IR, Laser optics, Computing systems, Control systems, Cryogenics

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Proceedings Article | 18 November 2005 Paper

Mid-infrared detection of trace biogenic species using compact QCL-based integrated cavity output spectroscopy (ICOS)

Michelle Silva, Richard Wainner, David Sonnenfroh, David Rosen, Mark Allen, Terence Risby

Proceedings Volume 6010, 60100E (2005) https://doi.org/10.1117/12.629993

KEYWORDS: Carbon monoxide, Quantum cascade lasers, Sensors, Absorption, Absorbance, Signal to noise ratio, Spectroscopy, NOx, Modulation, Mid-IR

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Proceedings Article | 18 November 2005 Paper

Standoff gas leak detectors based on tunable diode laser absorption spectroscopy

M. Frish, R. Wainner, B. Green, M. Laderer, M. Allen

Proceedings Volume 6010, 60100D (2005) https://doi.org/10.1117/12.630599

KEYWORDS: Sensors, Methane, Absorption, Fourier transforms, Gases, Process control, Mirrors, Signal processing, Tunable diode lasers, Absorption spectroscopy

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Proceedings Article | 5 November 2005 Paper

A novel variable power diode laser sensor for harsh process monitoring

William Von Drasek, Anna Melsió, Shawn Wehe, Mark Allen

Proceedings Volume 5998, 59980E (2005) https://doi.org/10.1117/12.631803

KEYWORDS: Particles, Sensors, Carbon monoxide, Magnesium, Temperature metrology, Optical amplifiers, Absorption, Gas lasers, Semiconductor lasers, Signal processing

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Proceedings Article | 25 March 2005 Paper

In-situ and stand-off sensing using QC/IC laser technology from 3-100 microns

Mark Allen, David Cook, Brian Decker, Joel Hensley, David Rosen, Michelle Silva, David Sonnenfroh, Richard Wainner

Proceedings Volume 5732, (2005) https://doi.org/10.1117/12.598279

KEYWORDS: Absorption, Sensors, Quantum cascade lasers, Laser applications, Terahertz radiation, Spectroscopy, LIDAR, Semiconductor lasers, Modulation, Mirrors

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Proceedings Article | 7 December 2004 Paper

Progress in reducing size and cost of trace gas analyzers based on tunable diode laser absorption spectroscopy

M. Frish, R. Wainner, B. Green, J. Stafford-Evans, M. Laderer, M. Allen

Proceedings Volume 5586, (2004) https://doi.org/10.1117/12.580938

KEYWORDS: Sensors, Absorption, Process control, Control systems, Signal processing, Oxygen, Gases, Tunable diode lasers, Absorption spectroscopy, Gas sensors

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Proceedings Article | 8 April 2004 Paper

Through container THz sensing: applications for explosives screening

David Cook, Brian Decker, Gami Maislin, Mark Allen

Proceedings Volume 5354, (2004) https://doi.org/10.1117/12.525466

KEYWORDS: Terahertz radiation, Explosives, Spectroscopy, Sensors, Absorption, Scattering, Reflection, Phonons, Fabry–Perot interferometers, Opacity

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Proceedings Article | 8 March 2004 Paper

Tunable diode laser sensor for multiple species monitoring in harsh atmospheres

William Von Drasek, Shawn Wehe, Mark Allen

Proceedings Volume 5272, (2004) https://doi.org/10.1117/12.515701

KEYWORDS: Atmospheric monitoring, Combustion, Sensors, Tunable diode lasers, Process control, Semiconductor lasers, Atmospheric sensing, Absorption, Carbon monoxide, Temperature metrology

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Energy intensive industries such as steel, aluminum, and glass require combustion processes that are characteristically at high temperature with high levels of particulate matter. Monitoring and control of these processes for improved efficiency, pollutant reduction, and product quality requires a sensor adaptable for such harsh environments. Traditional industrial monitoring relies on extractive sampling that requires frequent maintenance due to probe plugging or corrosion and routine calibration. In addition, capturing the temporal behavior of the process can be problematic with extractive sampling systems because of the slow response time associated with the sampling line lengths and slow response analyzers. To meet the demands of these harsh combustion processes the ideal sensor would perform in-situ process monitoring, require little or no maintenance and provide real-time process information The use of tunable diode lasers based on absorption monitoring overcomes many of the problems associated with conventional extractive sampling. However, the majority of industrial combustion processes will undergo temperature variations along with changes in the atmosphere oxidation or reducing state during normal operation. Therefore, temperature monitoring along with key combustion species monitoring that describes the atmosphere e.g., O₂ and CO, is often necessary for optimal process control. The temperature is not only a useful parameter describing the state of the process, but is needed to accurately determine the species concentration since the absorption measured is dependent on temperature. To monitor both reducing and oxidizing combustion atmospheres in addition to gas temperature requires a diode laser system capable of multiple species monitoring. Here we describe an industrial prototype system operating in the near-infrared for simultaneous monitoring of O₂ (.76 μm), CO (1.5 μm), H₂O (1.5 μm) and gas temperature. The prototype system addresses the issues of added complexity with multiple species monitoring by using only two diode lasers and a beam launch and receiver optical design to discriminate the vastly different laser wavelengths while suppressing background radiation noise and beam steering from thermal gradients. Measurement results using the system for industrial process monitoring on a 100-ton/hr steel reheat furnace are presented. The measurements in this test were conducted at different zones in the furnace and at different heights relative to the processed material. The results show dynamic variations in concentration and temperature that could aid in improved atmosphere control.

Proceedings Article | 27 February 2004 Paper

Through-container THz sensing: applications for biodetection

David Cook, Brian Decker, Gami Dadusc, Mark Allen

Proceedings Volume 5268, (2004) https://doi.org/10.1117/12.518127

KEYWORDS: Terahertz radiation, Absorption, Sensors, Spectroscopy, Scattering, Fabry–Perot interferometers, Calcium, Signal attenuation, Biosensing, Crystals

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Proceedings Article | 14 February 2001 Paper

Handheld laser-based sensor for remote detection of toxic and hazardous gases

Michael Frish, Michael White, Mark Allen

Proceedings Volume 4199, (2001) https://doi.org/10.1117/12.417375

KEYWORDS: Sensors, Methane, Gases, Electronics, Absorption, Toxic gases, Transceivers, Absorbance, Receivers, Tunable diode lasers

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Proceedings Article | 14 February 2001 Paper

Pollutant emission monitoring using QC laser-based mid-IR sensors

David Sonnenfroh, Mark Allen, W. Terry Rawlins, Claire Gmachl, Federico Capasso, Albert Hutchinson, Deborah Sivco, Alfred Cho

Proceedings Volume 4199, (2001) https://doi.org/10.1117/12.417364

KEYWORDS: Absorption, Quantum cascade lasers, Sensors, Semiconductor lasers, Carbon dioxide, Infrared radiation, Absorbance, Pulsed laser operation, Information operations, Carbon dioxide lasers

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Proceedings Article | 13 February 2001 Paper

Multifunctional industrial combustion process monitoring with tunable diode lasers

William Von Drasek, Olivier Charon, Ken Mulderink, David Sonnenfroh, Mark Allen

Proceedings Volume 4201, (2001) https://doi.org/10.1117/12.417388

KEYWORDS: Sensors, Combustion, Carbon monoxide, Semiconductor lasers, Particles, Absorption, Temperature metrology, Gas lasers, Pyrometry, Tunable diode lasers

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Proceedings Article | 7 May 1999 Paper

Oxy-fuel combustion emission monitoring using tunable diode laser sensors

William Von Drasek, David Sonnenfroh, P. Keating, Mark Allen, Olivier Charon

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347798

KEYWORDS: Combustion, Sensors, Tunable diode lasers, Semiconductor lasers, Atmospheric particles, Absorption, Temperature metrology, Signal to noise ratio, Carbon monoxide, Molecules

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Proceedings Article | 26 February 1999 Paper

Near-IR diode-laser-based sensor for parts-per-billion-level water vapor in industrial gases

William Kessler, Mark Allen, Steven Davis, Phillip Mulhall, Jan Polex

Proceedings Volume 3537, (1999) https://doi.org/10.1117/12.341026

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Proceedings Article | 22 January 1999 Paper

Diode laser sensors for aeropropulsion testing and control

Mark Allen, Michael Miller, David Sonnenfroh, Bernard Upschulte

Proceedings Volume 3535, (1999) https://doi.org/10.1117/12.337485

KEYWORDS: Sensors, Absorption, Temperature metrology, Semiconductor lasers, Carbon monoxide, Velocity measurements, Gases, Environmental sensing, Control systems, Combustion

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Proceedings Article | 21 October 1996 Paper

Ultrasensitive detection technique for tunable diode laser spectrometers: application to detection of NO2 and H2O

David Sonnenfroh, Scott Sewell, Mark Allen

Proceedings Volume 2834, (1996) https://doi.org/10.1117/12.255339

KEYWORDS: Sensors, Absorption, NOx, Absorbance, Signal to noise ratio, Semiconductor lasers, Tunable diode lasers, Troposphere, Atmospheric sensing, Frequency modulation

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Proceedings Article | 29 March 1996 Paper

Diode laser-based sensors for chemical oxygen iodine lasers

Steven Davis, Mark Allen, William Kessler, Keith McManus, Michael Miller, Phillip Mulhall

Proceedings Volume 2702, (1996) https://doi.org/10.1117/12.236872

KEYWORDS: Oxygen, Absorption, Semiconductor lasers, Chemical oxygen iodine lasers, Sensors, Iodine, Diagnostics, Diodes, Chemical lasers, Calibration

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Proceedings Article | 30 May 1995 Paper

Diode laser sensors for aeropropulsion monitoring and control

Mark Allen, William Kessler, Daniel Palombo, David Sonnenfroh

Proceedings Volume 2494, (1995) https://doi.org/10.1117/12.210505

KEYWORDS: Sensors, Absorption, Semiconductor lasers, Temperature metrology, Combustion, Fiber optics sensors, Absorbance, Velocity measurements, NOx, Oxygen

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Proceedings Article | 18 March 1994 Paper

Ultrasensitive diode laser direct absorption measurements: applications to mass flux flight instrumentation

Mark Allen, Karen Carleton, Steven Davis, Daniel Palombo

Proceedings Volume 2122, (1994) https://doi.org/10.1117/12.171281

KEYWORDS: Absorption, Sensors, Semiconductor lasers, Frequency modulation, Velocity measurements, Modulation, Fermium, Doppler effect, Temperature metrology, Absorption spectroscopy

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Proceedings Article | 1 March 1991 Paper

Applications of excimer lasers to combustion research

Steven Davis, Mark Allen

Proceedings Volume 1377, (1991) https://doi.org/10.1117/12.25032

KEYWORDS: Laser induced fluorescence, Excimer lasers, Combustion, Luminescence, Raman scattering, Laser applications, Dye lasers, Absorption, Diagnostics, Excimers

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Showing 5 of 29 publications

Conference Committee Involvement (3)

Infrared, Mid-IR, and Terahertz Technologies for Health and the Environment II

10 September 2007 | Boston, MA, United States

Infrared, Mid-IR, and THz Technologies for Health and the Environment

2 October 2006 | Boston, Massachusetts, United States

Infrared to Terahertz Technologies for Health and the Environment

24 October 2005 | Boston, MA, United States

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