Searched for: author%3A%22Bohlin%2C+G.A.%22
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Klyukin, Dmitry (author), Mazza, F. (author), Castellanos, Leonardo (author), Bohlin, G.A. (author)
Cascaded coherent anti-Stokes Raman scattering (CARS) signals can be efficiently generated from CARS signals when propagating collinearly with the pump/Stokes and probe beams. This effect can be seen as the CARS beam acting as the probe beam and being inelastically scattered a ‘second time’ from the Raman coherence induced along the focus of...
journal article 2021
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Mazza, F. (author), Castellanos, Leonardo (author), Klyukin, Dmitry (author), Bohlin, G.A. (author)
Simultaneous detection of resonant and non-resonant femtosecond/picosecond coherent anti-Stokes Raman spectroscopy (CARS) signals has been developed as a viable technique to provide in-situ referencing of the impulsive excitation efficiency for temperature assessments in flames. In the framework of CARS thermometry, the occurrence of both a...
journal article 2020
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Castellanos, Leonardo (author), Mazza, F. (author), Klyukin, Dmitry (author), Bohlin, G.A. (author)
We report spatiotemporal pure-rotational coherent anti-Stokes Raman spectroscopy (CARS) in a one-dimensional imaging arrangement obtained with a single ultrafast regenerative amplifier system. The femtosecond pump/Stokes photon pairs, used for impulsive excitation, are delivered by an external compressor operating on a ∼35% beam split of the...
journal article 2020
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Bohlin, G.A. (author), El Sioufy, Karim (author), Jainski, C. (author), Dreizler, A (author), Patterson, B.D. (author), Kliewer, C. J. (author)
In practical combustion devices featuring high power densities, the interaction between flames and walls may have a significant impact on the thermodynamic efficiency and the formation of pollutants (e.g. unburned hydrocarbons and carbon monoxide). The common understanding is that at the region near the wall ~ 1 mm, where the solid metal surface...
abstract 2019
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Bohlin, G.A. (author), El Sioufy, Karim (author), Jainski, C. (author), Patterson, B.D. (author), Dreizler, A (author), Kliewer, C. J. (author)
In practical combustion-based devices, such as internal combustion (IC) engines and gas turbines for power generation, there exists significant interaction between gas-phase combustion and metal surfaces. The nature of this heterogeneous interaction is complex, involving both physical and chemical effects. The metal surface is generally much...
abstract 2018
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Bohlin, G.A. (author)
We develop simultaneous ultrafast CARS thermometry and species detection as a unique tool to investigate combustion modes with reduced emissions of NOx, particulates, CO and unburned hydrocarbons. Coherent anti-Stokes Raman spectroscopy (CARS) has been developed over the last 4 decades for various gas-phase-, plasma-, flame- and combustion...
abstract 2018
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Bohlin, G.A. (author)
other 2018
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Campbell, M. F. (author), Schrader, P. E. (author), Catalano, A. L. (author), Johansson, K. O. (author), Bohlin, G.A. (author), Richards-Henderson, N. K. (author), Kliewer, C. J. (author), Michelsen, H. A. (author)
We have developed and built a small porous-plug burner based on the original McKenna burner design. The new burner generates a laminar premixed flat flame for use in studies of combustion chemistry and soot formation. The size is particularly relevant for space-constrained, synchrotron-based X-ray diagnostics. In this paper, we present...
journal article 2017
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Bohlin, G.A. (author)
Overall aim and key objectives Advances in optical imaging techniques over the past decades have revolutionized our ability to study chemically reactive flows encountered in air-breathing combustion systems. Emerging technology for unravelling clean- and efficient heat release is needed for advancing new reduced...
abstract 2016
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