An adaptive system having 70, 400 wave-front control channels has been experimentally analyzed. Wave-front control is based on the diffractive-feedback principle and requires neither a reference wave nor direct wave-front measurements. The key system elements are a liquid-crystal television used as a phase modulator, a CCD camera, and an optoelectronic feedback loop. Experiments demonstrated efficient suppression of wave-front distortions belonging to a bandpass spectral domain. Results demonstrate the system’s potential as a secondary high-resolution adaptive feedback system for adaptive optics applications.
© 1999 Optical Society of America
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(050.1970) Diffraction and gratings : Diffractive optics
(060.5060) Fiber optics and optical communications : Phase modulation
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(100.5070) Image processing : Phase retrieval
Mikhail A. Vorontsov, "High-resolution adaptive phase distortion compensation using a diffractive-feedback system: experimental results," J. Opt. Soc. Am. A 16, 2567-2573 (1999)