Search results
Results From The WOW.Com Content Network
Upconversion, upconverter, or upconverting may refer to: Scaling of a video signal to higher resolution; Up- and down-conversion of analog signals (heterodyning)
Schematic of SPDC process. Note that conservation laws are with respect to energy and momentum inside the crystal.. Spontaneous parametric down-conversion (also known as SPDC, parametric fluorescence or parametric scattering) is a nonlinear instant optical process that converts one photon of higher energy (namely, a pump photon) into a pair of photons (namely, a signal photon, and an idler ...
Frequency mixer symbol used in schematic diagrams. A heterodyne is a signal frequency that is created by combining or mixing two other frequencies using a signal processing technique called heterodyning, which was invented by Canadian inventor-engineer Reginald Fessenden.
In digital signal processing, a digital down-converter (DDC) converts a digitized, band-limited signal to a lower frequency signal at a lower sampling rate in order to simplify the subsequent radio stages.
Photon upconversion relies on metastable states to facilitate sequential energy absorption. Therefore, a necessary condition for upconverting systems is the existence of optically active long-lived excited states. This role is traditionally filled by lanthanide metal ions embedded in an insulating host lattice.
If you’re a backyard chicken owner (and even if you’re not), you’ve likely heard about Avian Influenza (AI). Commonly referred to as bird flu, it’s a highly contagious viral disease ...
Frequency mixer symbol. In electronics, a mixer, or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it.In its most common application, two signals are applied to a mixer, and it produces new signals at the sum and difference of the original frequencies.
Cohabitating with a partner can be difficult even if you’ve been together for many years, like Kelly Ripa and Mark Consuelos, who tied the knot in 1996.. People have different habits and ...