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Spatial and Temporal Resolution of Coherent and Incoherent Light Sources The spatial resolution of optical methods using lasers is much higher than those using thermal light sources. The temporal resolution of optical methods with lasers for the measurement of the time dependence of physical parameters (velocity of moving targets, elasto-optical measurements of mechanical quantities, e. g. stress, acoustic pressure) is limited by their strong noise, exceeding the noise of thermal light sources by orders of magnitudes.

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Räumliches und zeitliches Auflösungsvermögen kohärenter und inkohärenter Lichtquellen / Spatial and Temporal Resolution of Coherent and Incoherent Light Sources