Abstract
Illumination of a random diffuse object by a fringe pattern produced by two symmetrical laser beams leads to phenomena that are usually studied with speckle interferometric techniques. We first show that these phenomena are analogous to moiré. We then propose to apply this method for measuring the transverse vibrations of a diffuse surface in real time with interferometric sensitivity. Further, we show that the discussed system can work as a linear displacement transducer; the theoretical aspects of this so-called random moiré transducer are investigated.
© 1976 Optical Society of America
Full Article | PDF ArticleMore Like This
D. Joyeux
Appl. Opt. 15(5) 1248-1255 (1976)
R. P. Khetan and F. P. Chiang
Appl. Opt. 15(9) 2205-2215 (1976)
S. Yokozeki, Y. Kusaka, and K. Patorski
Appl. Opt. 15(9) 2223-2227 (1976)