Photon Doppler velocimetry
Encyclopedia
Photon Doppler velocimetry (PDV) is a one-dimensional Fourier transform
analysis of a heterodyne
laser
interferometry
. It was developed at Lawrence Livermore National Laboratory
by Strand. In recent years PDV has achieved popularity in the shock physics community as an adjunct or replacement for VISAR in the instrumentation of high-strain-rate events. Contemporary data acquisition technology and off-the-shelf optical telecommunications devices now leverage the assembly of these systems within reasonable budgets.
, Institute for Advanced Technology.
The 2010 PDV users conference was held at the Ohio State University.
Fourier transform
In mathematics, Fourier analysis is a subject area which grew from the study of Fourier series. The subject began with the study of the way general functions may be represented by sums of simpler trigonometric functions...
analysis of a heterodyne
Heterodyne
Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden where high frequency signals are converted to lower frequencies by combining two frequencies. Heterodyning is useful for frequency shifting information of interest into a useful...
laser
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation...
interferometry
Interferometry
Interferometry refers to a family of techniques in which electromagnetic waves are superimposed in order to extract information about the waves. An instrument used to interfere waves is called an interferometer. Interferometry is an important investigative technique in the fields of astronomy,...
. It was developed at Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory
The Lawrence Livermore National Laboratory , just outside Livermore, California, is a Federally Funded Research and Development Center founded by the University of California in 1952...
by Strand. In recent years PDV has achieved popularity in the shock physics community as an adjunct or replacement for VISAR in the instrumentation of high-strain-rate events. Contemporary data acquisition technology and off-the-shelf optical telecommunications devices now leverage the assembly of these systems within reasonable budgets.
Conference
The 2009 PDV users conference was held at the University of Texas at AustinUniversity of Texas at Austin
The University of Texas at Austin is a state research university located in Austin, Texas, USA, and is the flagship institution of the The University of Texas System. Founded in 1883, its campus is located approximately from the Texas State Capitol in Austin...
, Institute for Advanced Technology.
The 2010 PDV users conference was held at the Ohio State University.