A laser Doppler velocimetry diagnostic fitting high-strain rate motion of solids as in shock wave experiments by now requires a single-mode laser. We have worked out a new method of increasing by 1 order of magnitude the luminosity of such a diagnostic. We use a broadband pulsed laser coupled to a Fabry-Perot acting as a spectrum modulator and demodulator. This enables us to analyze over a wider range the behavior of poorly reflective materials subjected to shock loading. The principle and experimental results are presented.
© 1988 Optical Society of America
S. Gidon and G. Behar, "Multiple-line laser Doppler velocimetry," Appl. Opt. 27, 2315-2319 (1988)