White light velocity interferometry

Journal Article · Wed May 01 04:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50760· OSTI ID:561816

Erskine, D J; Holmes, N C ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

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). {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 561816
• Report Number(s): CONF-950846--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 370; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
INTERFEROMETRY
LIGHT SOURCES
OPTICAL SYSTEMS
VELOCIMETERS
VISIBLE RADIATION