Please help to improve it, or discuss the issue on the talk page. A streak camera is an instrument fundamentals of dimensional metrology pdf download measuring the variation in a pulse of light’s intensity with time. A streak camera operates by transforming the time variations of a light pulse into a spatial profile on a detector, by causing a time-varying deflection of the light across the width of the detector.

A light pulse enters the instrument through a narrow slit along one direction gets deflected in the perpendicular direction so that photons that arrive first hit the detector at a different position compared to photons that arrive later. The resulting image forms a “streak” of light, from which the duration, and other temporal properties, of the light pulse can be inferred. Usually, in order to record periodic phenomena, a streak camera needs to be triggered accordingly, similarly to an oscilloscope. Mechanical streak cameras use a rotating mirror or moving slit system to deflect the light beam. They are limited in their maximum scan speed and thus temporal resolution. Optoelectronic streak cameras work by directing the light onto a photocathode, which when hit by photons produces electrons via the photoelectric effect. The time-resolution of the best optoelectronic streak cameras is around 180 femtoseconds.

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