Ultrafast laser diagnostics have many interesting and unique properties. We utilize ultrafast femtosecond lasers for conducting particle image velocimetry with a single optical access port and ultrafast optical Kerr gates for time-of-flight sectioning.
Ultra-high-speed cameras that operate up to 10 million-frames-per-second can also be used to study the incandescence decay rates of soot, enabling single-camera, single-laser-shot particle sizing in turbulent flames. We are currently interested in applying this technique to study soot formation in complex turbulent combustion environments.
Selected Publications
- Y. Chen, E. Cenker, D. R. Richardson, S. P. Kearney, B. R. Halls, S. A. Skeen, C. R. Shaddix, and D. R. Guildenbecher, “Single-camera, Single-shot, Time-resolved Laser-induced Incandescence Decay Imaging,” Optics Letters, Vol. 43 (21), pp.5363-5366, 2018. [https://doi.org/10.1364/OL.43.005363]
- M. E. Paciaroni†, Y. Chen†, K. P. Lynch, and D. R. Guildenbecher, “Backscatter Particle Image Velocimetry via Optical Time-of-flight Sectioning (PIVOTS),” Optics Letters, vol. 43, no. 2, pp. 312-315, 2018. [†These Authors Contributed Equally to this Work][https://dx.doi.org/10.1364/OL.43.000312]
- M. E. Paciaroni, Y. Chen, K. P. Lynch, and D. R. Guildenbecher, “PIVOTS: A Novel Method of Performing Time Gated Particle Image Velocimetry,” OSA Imaging and Applied Optics Conference: Laser Applications to Chemical, Security and Environmental Analysis, paper LM3C.4, 2018. [Invited Talk] [https://doi.org/10.1364/LACSEA.2018.LM3C.4]