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Frequency-resolved optical gating (FROG) is a general method for measuring the spectral phase of ultrashort laser pulses, which range from subfemtosecond to about a nanosecond in length. Invented in 1991 by Rick Trebino and Daniel J. Kane, FROG was the first technique to solve this problem, which is difficult because, ordinarily, to measure an ...
RFM-I – Recency, Frequency, Monetary Value – Interactions is a version of RFM framework modified to account for recency and frequency of marketing interactions with the client (e.g. to control for possible deterring effects of very frequent advertising engagements).
The gating signal can be generated by various means, such as an external trigger, a specific voltage level, or a specific frequency range. Signal gating is often employed in applications where precise control over the transmission of signals is required. Here are a few examples of how signal gating is used in different fields: 1.
Frequency Resolved Optical Gating (FROG) is a technique that determines the intensity and phase of a pulse by measuring the spectrum of a particular temporal component of said pulse. [23] This results in an intensity trace, related to the spectrogram of the pulse S E ( ω , τ ) {\displaystyle S_{E}(\omega ,\tau )} , versus frequency and delay:
In marketing and advertising, frequency refers to the number of times a target audience is exposed to a particular message or advertisement within a given time frame. [1] This concept is a fundamental element of marketing communication strategies, aiming to enhance brand recall, create awareness, and influence consumer behavior through repeated ...
Gating system metalwork, a process in casting; Gating signal, a signal that provides a time window; Clock gating, a power-saving techniques used in synchronous circuits; Power gating, a power-saving technique for circuits; Noise gate, a term in audio signal processing; Frequency-resolved optical gating, a term related to auto correlation in optics
Frequency-resolved optical gating (FROG) is a nonlinear technique that yields the intensity and phase of a pulse. It is a spectrally resolved autocorrelation. The algorithm that extracts the intensity and phase from a FROG trace is iterative.
Techniques known since the 1940s and used in military communication systems since the 1950s "spread" a radio signal over a wide frequency range several magnitudes higher than minimum requirement. The core principle of spread spectrum is the use of noise-like carrier waves, and, as the name implies, bandwidths much wider than that required for ...