Abstract
Ballistic imaging using a 15 ps pulse laser in high-injection-pressure diesel sprays is reported. An optical Kerr effect shutter, constructed from a liquid cell and activated by a 15 ps pulse at 1064 nm, produces effective 532 nm imaging pulses between 7 and 15 ps. The performance of the imaging system is characterized using an Air Force target positioned before an optical cell filled with polystyrene spheres in a water suspension. The impact of spatial filtering, temporal filtering, and scattering path length on image resolution are reported. The technique is demonstrated by imaging the near-orifice region of methyl oleate and methyl butyrate sprays injected using a high-pressure single-hole fuel injector with direct comparison against simultaneous orthogonal shadowgraphy.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Harsh Purwar, Hongjie Wang, Mincheng Tang, Saïd Idlahcen, Claude Rozé, Jean-Bernard Blaisot, Thomas Godin, and Ammar Hideur
Opt. Express 23(26) 33396-33407 (2015)
Jacob B. Schmidt, Zane D. Schaefer, Terrence R. Meyer, Sukesh Roy, Stephen A. Danczyk, and James R. Gord
Appl. Opt. 48(4) B137-B144 (2009)
Mattias Rahm, Megan Paciaroni, Zhenkan Wang, David Sedarsky, and Mark Linne
Opt. Express 23(17) 22444-22462 (2015)