Abstract

The wavelength shift of the ruby luminescence R-lines is commonly used for pressure calibration in static high-pressure studies. In addition to this, there is considerable interest in the application of spectroscopic techniques to shock wave experiments in condensed matter. A technique has been developed to record the ruby R-line spectrum continuously during shock loading (typically for a duration of 1μs) with a time resolution of ~40 ns. Experiments to longitudinal stresses of 40-99 kbar have demonstrated the feasibility of this technique. The use of optical fiber to transmit laser light to and luminescence from the ruby target is a key factor in the apparatus design; therefore, the transmission spectrum of shocked optical fibers was also examined. Recent improvements in the experimental design and assembly have yielded quantitative information about the wavelength shift under shock loading.

© 1986 Optical Society of America