Abstract
We propose an all-optic Fourier transformer which completely reproduces the field of input radiation by Fourier image of output. The latter will allow to register the temporal envelope of radiation by means of common spectrometric measurement. This performance is similar to the task of classic spectroscopy where instead of amplitude and phase registration of radiation complex field, the temporal and spectral distributions of intensity are measured by oscilloscope and spectrometer. Moreover, the proposed optical Fourier transformer solves the problem of direct phase measurements of ultrashort pulses, as well this problem is reduced to simplest one dimensional registration technique of beams spatial profile of phase.
© 1996 IEEE
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