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Dec 7, 2024 · But how can this be shown mathematically? How fast a frequency/wavelength-component moves depends on its phase velocity, but GVD is directly related to group velocity, not phase velocity.

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In optics, group-velocity dispersion (GVD) is a characteristic of a dispersive medium, used most often to determine how the medium affects the duration of an optical pulse traveling through it. Formally, GVD is defined as the derivative of the inverse of group velocity of light in a material with respect to angular frequency , [ 1 ] [ 2 ]

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Baikal-GVD is a next generation, kilometer-scale neutrino telescope under construction in Lake Baikal. It is designed to detect astrophysical neu-trino fluxes at energies from a few TeV up to 100 PeV. GVD is formed by multi-megaton subarrays (clusters). The array construction started in …

The basic measuring units of the BAIKAL-GVD are optical modules, which are design to convert the Cherenkov radiation of muons and showers into electric signals. An OM consists of the following elements: a photo-multiplier tube (PMT), a controller, an amplifier, LED calibration unit, and a high-voltage converter.

GVD’s platform technology is a polymer deposition process called Chemical Vapor Deposition (CVD), which produces high performance and high-quality films directly on the surface of the substrate from the vapor phase.

GVD’s growth has been organic, driven by a market demand for customized nano- and micro-coating solutions. GVD Corporation spun out of MIT’s Chemical Engineering laboratories in 2001 as the commercializing arm of a unique polymer vapor deposition technology.