Adaptable Diffraction Gratings With Wavefront Transformation
Goddard Space Flight Center, Greenbelt, Maryland
Thursday, April 01 2010
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Better resolution and aberration control are possible with a dynamic refractive grating.
Diffraction gratings are optical components with regular patterns of grooves, which angularly disperse incoming light by wavelength. Traditional diffraction gratings have static planar, concave, or convex surfaces. However, if they could be made so that they can change the surface curvature at will, then they would be able to focus on particular segments, self-calibrate, or perform fine adjustments.
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