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1508PL2 Freeelectron lasers as light sources for basic research
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addition allows amplitude analysis applications arrangement average beam calculated camera corresponding deformation depends described detection determined device direction discontinuities displacement distribution DOFS double effect electron electron beam energy ESPI example experiment experimental fibre field Figure filtering frame frequency fringe pattern function gain give given grating hologram holographic increase industrial intensity interference interferograms interferometry introduced laser length light lines materials means measurand measurement method mode modulation noise noisy object obtained operation optical path performance period phase shifting pixels plate polarization possible present problem Proc procedure processing produced pulse radiation range recorded reference reference beam regions relative resolution sensitivity Sensor shown shows signal single spatial speckle speckle pattern strain structure subtraction surface technique temperature testing typically undulator unwrapping vibration wave wavelength