High-Speed 4D Imaging

[Halls et al., Optica 4, 897–902 (2017)]

Burst-mode laser with 14-view intensified 4D Tomographic imaging system measuring LIF/LII at kHz rate.

Examples:

1.  20 kHz Aceton Laser-Induced Fluorescence (266 nm)

  • Acetone Vapor (20%)
  • ReD = 20,000
  • Jet Diameter = 5 mm
  • Imaged 1–20 x/D
  • 80 mJ/pulse, 266 nm

 

2) 10 kHz Soot Laser-Induced Incandescence (1064 nm)

  • Ethylene Diffusion Flame
  • ReD = 9000
  • Jet Diameter = 5 mm
  • Imaged 50 x/D
  • 1 J/pulse, 1064 nm