11 December 2003 Telescope with wavelength-agile diffractive wavefront control
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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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Mark T. Gruneisen, Mark T. Gruneisen, Lewis F. DeSandre, Lewis F. DeSandre, James R. Rotge, James R. Rotge, Raymond C. Dymale, Raymond C. Dymale, Donald L. Lubin, Donald L. Lubin, "Telescope with wavelength-agile diffractive wavefront control", Proc. SPIE 5162, Advanced Wavefront Control: Methods, Devices, and Applications, (11 December 2003); doi: 10.1117/12.504894; https://doi.org/10.1117/12.504894

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