White light velocity interferometry
We describe a generic method for using broadband and incoherent light in velocity interferometry. Single frequency lasers are no longer necessary. Compact, powerful and inexpensive light sources previously prohibited due to their incoherence are now suitable for Doppler velocimetry of remote objects through air, including arc lamps, flash lamps, light from detonations, pulsed lasers, chirped frequency lasers and lasers operated simultaneously in several lines. These powerful sources should allow practical line and areal velocimetry. In our technique, the light source is imprinted with a coherent echo having a delay matching the delay in an analyzing interferometer. The technique is generic to all wave phenomena (i.e. radar, ultrasound).
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 108188
- Report Number(s):
- UCRL-JC-121520; CONF-950846-56; ON: DE95017068
- Resource Relation:
- Conference: American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995; Other Information: PBD: Aug 1995
- Country of Publication:
- United States
- Language:
- English
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White light velocity interferometer
White light velocity interferometer