Speckle photography applied to the density field of a flame
Abstract
An optical arrangement combining a set-up for taking speckle records with a shearing interferometer using a Wollaston prism is applied to the study of a fluctuating Bunsen burner flame. The simultaneous recording, in real time, of the interferogram facilitates the interpretation of the data field derived by the point-by-point analysis of the specklegram. The pattern of Young's fringes obtained by analysis of the specklegram at 16 different positions in the field of view is shown, displaying the random variation of the light deflection in the flame.
- Publication:
-
Experiments in Fluids
- Pub Date:
- November 1987
- DOI:
- 10.1007/BF00264408
- Bibcode:
- 1987ExFl....5..422S
- Keywords:
-
- Density Distribution;
- Flame Stability;
- Light Scattering;
- Photography;
- Speckle Patterns;
- Helium-Neon Lasers;
- Laser Applications;
- Ruby Lasers;
- Instrumentation and Photography