Experimental Studies on Supercritical Flows
Abstract
Experimental apparatus was assembled for performing stimulated scattering. An initial setup used the fundamental radiation from an injection-seeded Nd:YAG laser as a pump laser, and a tunable laser diode as a probe laser. However, the two tunable laser diodes provided by the manufacturer stopped working prematurely, and the manufacturer has not been able to provide us with a working laser. Thus, a second experiment was set up using the second harmonic radiation from the Nd:YAG laser as a pump laser and an argon-pumped ring dye laser as a probe laser. With this arrangement stimulated Brillouin scattering was obtained in glasses and methanol. Specific system improvements were made to improve signal-to-noise ratios including bandpass electrical filtering, single-shot measurements, and triggering on the laser light. With these improvements, stimulated Rayleigh scattering in methanol was observed. These experiments provided information on the requirements of a cell for supercritical experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 20, 1998
- Accession Number
- ADA353498
Entities
People
- Gregory W. Faris
Organizations
- SRI International