Abstract
Since the invention in 1970 by Labeyrie1 of the technique of stellar speckle interferometry, there have been many attempts to extend it to produce diffraction-limited images through turbulence. In speckle interferometry, short exposure (≈10ms) images i(x) are recorded through a narrowband filter (≈10nm) and an estimate is made of the average energy spectrum <|I(u)|2> of the image, where I(u) is the Fourier transform of i(x).
© 1989 Optical Society of America
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