Making fast cylindrical gradient-index lenses diffraction limited by using a wave-front-correction element.

  title={Making fast cylindrical gradient-index lenses diffraction limited by using a wave-front-correction element.},
  author={Albrecht v. Pfeil and Bernhard Messerschmidt and Viktor Bl{\"u}mel and Ulf Possner and Torsten Possner},
  journal={Applied optics},
  volume={37 22},
A wave-front-correction element (WFCE) is produced to make a cylindrical Ag-ion-exchanged gradient-index (GRIN) lens with a high numerical aperture (0.53) diffraction limited (wave-front error, 0.02lambda rms). The wave-front aberrations of the cylindrical GRIN lens are measured by a phase-shifting shearing interferometer, with a conventional microscope objective used as a compensation lens. The continuous surface relief of the WFCE is produced by a lithographic process. The wave-front… Expand
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