What are Laser-frequency sweeps?

What are sweeps?

Unlike a single frequency, a sweep is a "frequency noise", a modulated accord. Many natural resonances contain different frequencies (frequency swing) of a defined spectrum. Frequently individual frequencies contained in a natural spectrum are attributed to the effect of this natural spectrum and then represent a kind of "guiding frequency". The development of the sweeps, on the other hand, is closer to the natural situation (example brain waves).

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