A wavelength shifter is a photofluorescent material that absorbs higher
These materials can be used to increase the efficiency of a
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Scintillator — Scintillation crystal surrounded by various scintillation detector assemblies … Wikipedia
Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c … Wikipedia
POPOP — or 1,4 bis(5 phenyloxazol 2 yl) benzene is a scintillator. It is used as a wavelength shifter (also called a secondary scintillator ), which means that it converts shorter wavelength light to longer wavelength light. Its output spectrum peaks at… … Wikipedia
All-pass filter — An all pass filter is an electronic filter that passes all frequencies equally, but changes the phase relationship between various frequencies. It does this by varying its propagation delay with frequency. Generally, the filter is described by… … Wikipedia
telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… … Universalium
radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… … Universalium
radiation measurement — ▪ technology Introduction technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement. The term ionizing radiation refers to those… … Universalium
List of wave topics — This is a list of wave topics.0 ndash;9*21 cm lineA*Abbe prism *absorption spectrum *acoustics *Airy disc *Airy wave theory *Alfvén wave *Alpha waves *amphidromic point *amplitude *amplitude modulation *analog sound vs. digital sound *animal… … Wikipedia
Multiplexer — This article is about electronic switching. For telecommunications, see multiplexing. Schematic of a 2 to 1 Multiplexer. It can be equated to a controlled switch … Wikipedia
Optical hybrid — A 90° optical hybrid is a six port device that is used for coherent signal demodulation for either homodyne or heterodyne detection. It would mix the incoming signal with the four quadratural states associated with the reference signal in the… … Wikipedia
