autocorrelator


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autocorrelator

[‚ȯd·ō′kär·ə‚lād·ər]
(electronics)
A correlator in which the input signal is delayed and multiplied by the undelayed signal, the product of which is then smoothed in a low-pass filter to give an approximate computation of the autocorrelation function; used to detect a nonperiodic signal or a weak periodic signal hidden in noise.
References in periodicals archive ?
Data were collected using a Goniometer Brookhaven Instruments model BI-200SM-E multiangle DLS/SLS with digital autocorrelator TurboCorr.
The pulse duration is measured with a commercial second harmonic generation autocorrelator.
However due to the lack of suitable autocorrelator, the character of the temporal profile of the degenerate pulses was not conducted.
Laser Light ScatteringDynamic light scattering was carried out by a commercial LLS spectrometer BI-200SM motor- driven goniometer equipped with BI-9000AT digital autocorrelator or the BI-9025AT photon counter and a cylindrical 22mW uniphase HeNe laser (wave length 637nm) and BI-ISTW software was used.
The 30% of the intracavity power was tapped out by an output coupler, connecting to a power meter, an autocorrelator, an oscilloscope, and an optical spectrum analyzer to observe the power, the temporal pulse trace, the pulse train, and the optical spectrum, respectively.
USE OF LABVIEW IN CREATING A DYNAMIC LIGHT SCATTERING AUTOCORRELATOR. Marian Axente* and Robert Marlowe, University of Tennessee, Chattanooga, Chattanooga, Tennessee.
The autocorrelator, the standard pulse-diagnostic device since the 1960s, requires recombining two pulses in a carefully aligned second harmonic generation (SHG) crystal that yields only a rough measure of the length of the pulse in time.
Zipfel has several other applications for the PD2-DIO board including an inexpensive autocorrelator for a biophysical technique know as Fluorescence Correlation Spectroscopy (FCS) and to replace more expensive "multichannel sealers" he has previously used for several other types of biophysical and photophysical measurements.
The resulting scattered light is collected by a second fibre and then analyzed using the established technique of Dynamic Light Scattering and the company's own BL9000AT digital autocorrelator.
Infrasonic Energy Autocorrelator, Publicacion Observatorio San Calixto, La Paz, Bolivia, 10 pp.
An autocorrelator option enables the Tristar to be connected to a dynamic light scattering instrument to determine the diffusion coefficients "on the fly".