Experimental SWIR gated viewing in accumulation mode
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Yves Lutz
Yves Lutz holds a Master of Science degree from the University of Franche-Comté and a PhD from the University of Haute-Alsace (France) in the field of Electronics and Laser Physics. He specializes in the development of laser sources and laser lighting devices. He is currently working on SWIR illumination sources for gated viewing applications.
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Alexis Matwyschuk
Alexis Matwyschuk received his MSc and his PhD from the University of Haute-Alsace (France) in the field of Optics and Electrical Engineering. He specializes in laser optics, holography, and optical data processing. He is currently leading research and development projects with industrial and governmental partners.
Jean-Michel Poyet holds an Engineer’s degree from the University of Paris XI (France) in the field of Optronics. He specializes in research and development in imaging systems and optical design. He is currently working on laser gated viewing techniques.
Abstract
The recent availability of imaging sensors able to work in accumulation mode in the SWIR spectral range allows the realization of new efficient range-gated viewing systems. Such systems relax the illumination constraint so that the energy required to build an image can be distributed over several laser pulses. Semiconductor or fiber lasers can be used instead of high peak power solid state lasers. Such a system was realized in our laboratory, tested, and compared to a more classical flash system under outdoor conditions. In a first step, images of the same scenes recorded in the same weather conditions were compared to those recorded with a classical system working in flash mode. The MTF analysis shows an improvement of up to 40% with the system working in accumulation mode. In order to remove the influence of two different laser sources as well as of two different cameras, a second experiment was conducted. For this purpose, a shorter range and only one system were employed. Both operating modes, the flash and the accumulation mode, were examined. The second experiment confirms that accumulation mode can decrease significantly the value of the scintillation index resulting in a higher resistance to optical perturbations. These results increase the relevance of the accumulation mode for active imaging applications in the SWIR spectral region.
About the authors
Yves Lutz holds a Master of Science degree from the University of Franche-Comté and a PhD from the University of Haute-Alsace (France) in the field of Electronics and Laser Physics. He specializes in the development of laser sources and laser lighting devices. He is currently working on SWIR illumination sources for gated viewing applications.
Alexis Matwyschuk received his MSc and his PhD from the University of Haute-Alsace (France) in the field of Optics and Electrical Engineering. He specializes in laser optics, holography, and optical data processing. He is currently leading research and development projects with industrial and governmental partners.
Jean-Michel Poyet holds an Engineer’s degree from the University of Paris XI (France) in the field of Optronics. He specializes in research and development in imaging systems and optical design. He is currently working on laser gated viewing techniques.
References
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©2019 THOSS Media & De Gruyter, Berlin/Boston
Artikel in diesem Heft
- Cover and Frontmatter
- Views
- Sixty years of advanced imaging at the French-German Research Institute of Saint-Louis: from the Cranz-Schardin camera to computational optics
- Community
- Conference Notes
- Topical Issue: Active Imaging
- Editorial
- Active imaging
- Review Article
- Nick-named laser radars
- Research Articles
- Experimental SWIR gated viewing in accumulation mode
- InGaAs APD matrix sensors for SWIR gated viewing
- Modelling and impact of the turbulence effect on flash and cumulative 2D active imaging system
- Laser-based imaging applications in turbid waters
- Review Article
- Reflectors in lighting design
- Research Articles
- A procedure for designing and manufacturing microstructured lenses used in automotive headlamps
- Fabrication of textured substrates for dye-sensitized solar cells using polydimethylsiloxane nanoimprint lithography
- 10.1515/aot-2019-0023
- 10.1515/aot-2018-0072
- 10.1515/aot-2019-0021
- Erratum
- Erratum to: Ultrafast Bessel beams: advanced tools for laser materials processing
Artikel in diesem Heft
- Cover and Frontmatter
- Views
- Sixty years of advanced imaging at the French-German Research Institute of Saint-Louis: from the Cranz-Schardin camera to computational optics
- Community
- Conference Notes
- Topical Issue: Active Imaging
- Editorial
- Active imaging
- Review Article
- Nick-named laser radars
- Research Articles
- Experimental SWIR gated viewing in accumulation mode
- InGaAs APD matrix sensors for SWIR gated viewing
- Modelling and impact of the turbulence effect on flash and cumulative 2D active imaging system
- Laser-based imaging applications in turbid waters
- Review Article
- Reflectors in lighting design
- Research Articles
- A procedure for designing and manufacturing microstructured lenses used in automotive headlamps
- Fabrication of textured substrates for dye-sensitized solar cells using polydimethylsiloxane nanoimprint lithography
- 10.1515/aot-2019-0023
- 10.1515/aot-2018-0072
- 10.1515/aot-2019-0021
- Erratum
- Erratum to: Ultrafast Bessel beams: advanced tools for laser materials processing
