Pulsfases

Pulsfases refers to the phase position of an individual pulse within a repeating pulse train. The concept is used across electronics, optics, and metrology to describe where a pulse occurs within each cycle relative to a fixed reference. The phase is typically defined modulo a full cycle, taking values from 0 to 2π radians (0 to 360 degrees).

For a repetition period T, a pulse phase φ corresponds to a time offset Δt = φ/(2π)·T from the reference time. The phase can be constant or modulated, and is affected by factors such as clock stability, jitter, and environmental conditions. In practice, one often speaks of the phase difference between two pulse trains or between a pulse and a carrier waveform.

Measuring pulsfases requires high time resolution. Techniques include phase detectors and mixers, cross-correlation with a reference pulse, time-to-digital converters, and, in optics, interferometric methods. Phase control is often achieved with phase-locked loops or electronic delay lines to maintain a desired phase relationship.

Applications of pulsfases occur in radar and lidar ranging, high-speed communications, synchronised pulsed laser experiments, and particle accelerators, where precise phase alignment improves detection efficiency, range accuracy, or energy transfer. The term is used in some languages to denote this concept; in English, "pulse phase" is more common.