Two-photon fluorescence laser sheet imaging for high contrast visualization of atomizing sprays
| العنوان: | Two-photon fluorescence laser sheet imaging for high contrast visualization of atomizing sprays |
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| المؤلفون: | Mark Linne, Cord L. Arnold, Chris Conrad, Jeremias Püls, Edouard Berrocal, Miguel Miranda, Michael Wensing |
| المصدر: | OSA Continuum Berrocal, E, Conrad, C, Puels, J, Arnold, C, Wensing, M, Linne, M & Miranda, M 2019, ' Two-photon fluorescence laser sheet imaging for high contrast visualization of atomizing sprays ', OSA Continuum, vol. 2, no. 3, pp. 983-993 . https://doi.org/10.1364/OSAC.2.000983 OSA Continuum; 2(3), pp 983-993 (2019) |
| مصطلحات موضوعية: | Multiple scattering, Imaging through turbid media, Flow diagnostics, Ultrafast nonlinear optics, Materials science, Atom and Molecular Physics and Optics, 050801 communication & media studies, Imaging techniques, Signal, Light scattering, law.invention, 0508 media and communications, Optics, Laser induced fluorescence, Interference (communication), law, Microscopy, Elastic scattering, Electrical and Electronic Engineering, Laser-induced fluorescence, Laser scattering, business.industry, 05 social sciences, Fluid mechanics, Laser, X ray imaging, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Wavelength, business |
| الوصف: | Two-photon excitation laser induced fluorescence (2p-LIF) is used here for imaging an optically dense atomizing spray. The main advantage of the approach is that very little fluorescence interference originating from multiple light scattering is generated. This leads to high image contrast and a faithful description of the imaged fluid structures. While point measurement 2p-LIF imaging is a well-known approach used in life science microscopy, it has, to the best of the authors' knowledge, never been tested for analyzing liquid structures in spray systems. We take advantage of this process, here, at a macroscopic scale (textblackslashsim 5textblackslashtimes 5$5texttimes5 mm field of view) by imaging the central part of a light sheet of 10 mm height. To generate enough 2p-LIF signal at such a scale and with single-shot detection, ultra-short laser pulses of 25 fs, centered at 800 nm wavelength and having 2.5 mJ pulse energy, have been used. The technique is demonstrated by imaging a single spray plume from a 6 hole commercial Gasoline Direct Injection (GDI) system running at 200 bar injection pressure. The proposed approach is very promising for detailed analysis of liquid breakups in optically dense sprays and can be used for other fluid mechanics related applications. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2578-7519 |
| DOI: | 10.1364/osac.2.000983 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9c1cccd8f234bf76604f8d88c1742de |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f9c1cccd8f234bf76604f8d88c1742de |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 25787519 |
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| DOI: | 10.1364/osac.2.000983 |