Mr. Bernard J. Dery Profile

Bernard J. Dery

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Publications (6)

Proceedings Article | 25 February 2008 Paper

Spectroscopic analysis of fluorescent aerosols with a compact chamber

Bernard Déry, Jean-Robert Simard, Réal Vallée

Proceedings Volume 6878, 68780F (2008) https://doi.org/10.1117/12.758548

KEYWORDS: Aerosols, LIDAR, Luminescence, Atmospheric particles, Spectroscopy, Laser induced fluorescence, Bacteria, Laser optics, Defense and security, Beam expanders

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Proceedings Article | 26 October 2007 Paper

Two different mechanical tuning devices of fiber Bragg gratings

E. Bélanger, M. Bernier, J. Bérubé, B. Déry, S. Gagnon, D. Côté, R. Vallée

Proceedings Volume 6796, 67962Q (2007) https://doi.org/10.1117/12.778922

KEYWORDS: Fiber Bragg gratings, Polymers, Epoxies, Optical fibers, Glasses, Metals, Reflectivity, Diamond, Wavelength tuning, Optical filters

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Proceedings Article | 25 September 2007 Paper

Spectrally resolved laser-induced fluorescence for bioaerosols standoff detection

Sylvie Buteau, Laurie Stadnyk, Susan Rowsell, Jean-Robert Simard, Jim Ho, Bernard Déry, John McFee

Proceedings Volume 6756, 675608 (2007) https://doi.org/10.1117/12.732389

KEYWORDS: Clouds, Laser induced fluorescence, Sensors, Aerosols, Atmospheric particles, Luminescence, Signal detection, Standoff detection, Defense and security, LIDAR

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An efficient standoff biological warfare detection capability could become an important asset for both defence and security communities based on the increasing biological threat and the limits of the presently existing protection systems. Defence R&D Canada (DRDC) has developed, by the end of the 90s, a standoff bioaerosol sensor prototype based on intensified range-gated spectrometric detection of Laser Induced Fluorescence (LIF). This LIDAR system named SINBAHD monitors the spectrally resolved LIF originating from inelastic interactions with bioaerosols present in atmospheric cells customizable in size and in range. SINBAHD has demonstrated the capability of near real-time detection and classification of bioaerosolized threats at multi-kilometre ranges. In spring 2005, DRDC has initiated the BioSense demonstration project, which combines the SINBAHD technology with a geo-referenced Near InfraRed (NIR) LIDAR cloud mapper. SINBAHD is now being used to acquire more signatures to add in the spectral library and also to optimize and test the new BioSense algorithm strategy. In September 2006, SINBAHD has participated in a two-week trial held at DRDC-Suffield where different open-air wet releases of live and killed bioagent simulants, growth media and obscurants were performed. An autoclave killing procedure was performed on two biological materials (Bacillus subtilis var globigii or BG, and Bacillus thuringiensis or Bt) before being aerosolized, disseminated and spectrally characterized with SINBAHD. The obtained results showed no significant impact of this killing process on their normalised spectral signature in comparison with their live counterparts. Correlation between the detection signals from SINBAHD, an array of slit samplers and a FLuorescent Aerosol Particle Sensor (C-FLAPS) was obtained and SINBAHD's sensitivity could then be estimated. At the 2006 trial, a detection limit of a few tens of Agent Containing Particles per Liter of Air (ACPLA) was obtained for a 15-m thick cloud of live BG located at a range of 400 m.

Proceedings Article | 26 April 2007 Paper

Compact chamber for the spectroscopic analysis of fluorescent aerosols

Bernard Déry, Jean-Robert Simard, Réal Vallée, Gilles Roy, Hugo Lavoie, Sylvie Buteau

Proceedings Volume 6554, 65540O (2007) https://doi.org/10.1117/12.719599

KEYWORDS: Aerosols, LIDAR, Telescopes, Luminescence, Spectroscopy, Laser energy, Pulsed laser operation, Laser induced fluorescence, Sensors, Defense and security

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Proceedings Article | 25 October 2006 Paper

Bioaerosols laser-induced fluorescence provides specific robust signatures for standoff detection

Sylvie Buteau, Jean-Robert Simard, Bernard Déry, Gilles Roy, Pierre Lahaie, Pierre Mathieu, Jim Ho, John McFee

Proceedings Volume 6378, 637813 (2006) https://doi.org/10.1117/12.686010

KEYWORDS: Luminescence, Laser induced fluorescence, Signal detection, LIDAR, Aerosols, Sensors, Clouds, Standoff detection, Defense and security, Biological detection systems

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Proceedings Article | 8 September 2006 Paper

High power and highly efficient Raman fiber laser based on broadband fiber Bragg gratings

Erik Bélanger, Dominic Faucher, Martin Bernier, Bernard Déry, Réal Vallée

Proceedings Volume 6343, 63430Y (2006) https://doi.org/10.1117/12.707714

KEYWORDS: Fiber Bragg gratings, Reflectivity, Fiber lasers, Raman spectroscopy, Signal attenuation, Germanium, Laser resonators, Quantum efficiency, Cladding, Output couplers

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Showing 5 of 6 publications

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