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Applied Optics

Applied Optics


  • Vol. 37, Iss. 22 — Aug. 1, 1998
  • pp: 5211–5215

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

Albrecht v. Pfeil, Bernhard Messerschmidt, Veit Blümel, Ulf Possner, and Torsten Possner  »View Author Affiliations

Applied Optics, Vol. 37, Issue 22, pp. 5211-5215 (1998)

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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, 0.02λ 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-corrected GRIN lens is applied to collimate the strongly divergent light (57° full diverging angle measured at 1/e2 of maximum intensity) emitted by a high-power diode laser. The power irradiated into a full angle of 2 mrad can be enhanced by a factor of 1.8 with the WFCE.

© 1998 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(120.1680) Instrumentation, measurement, and metrology : Collimation
(140.0140) Lasers and laser optics : Lasers and laser optics
(220.3630) Optical design and fabrication : Lenses
(350.3950) Other areas of optics : Micro-optics

Original Manuscript: December 22, 1997
Revised Manuscript: April 6, 1998
Published: August 1, 1998

Albrecht v. Pfeil, Bernhard Messerschmidt, Veit Blümel, Ulf Possner, and Torsten Possner, "Making fast cylindrical gradient-index lenses diffraction limited by using a wave-front-correction element," Appl. Opt. 37, 5211-5215 (1998)

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