Multiple-line laser Doppler velocimetry.
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.
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Gidon
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Behar