Telescope with wavelength-agile diffractive wavefront control

Details Telescope with wavelength-agile diffractive wavefront control Telescope with wavelength-agile diffractive wavefront control

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.5162..172g&link_type=abstract

Advanced Wavefront Control: Methods, Devices, and Applications. Edited by Gonglewski, John D.; Vorontsov, Mikhail A.; Gruneisen

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Programmable diffractive optics utilizing a high-resolution liquid-crystal phase modulator is demonstrated as a technique for large-range, two-dimensional aberration control. A high-resolution phase modulator system introduces modulo-2π phase compensation via discrete-step phase modulation and operates with 307,200 independently addressable elements, and total optical efficiencies of up to 93%. Near-diffraction-limited imaging and beam directing is demonstrated in a telescope system with large off-axis aberrations. Wavelength-agile and extended spectral bandwidth operation are also demonstrated.

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