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Proceedings Paper

Chromatic Aberration-Free Grating-Lens Pair
Author(s): F. Yamagishi; M. Kato; S. Maeda; H. Ikeda; T. Inagaki
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Paper Abstract

We have developed a high numerical aperture grating-lens pair with large wavelength allowance. It has a new "center cross" structure, in which all rays cross the optical axis between the two grating lenses. Grating-lenses have concentric grating rings with radii set to cancel the diffraction angle changes caused by wavelength change. Wavelength allowance was estimated using RMS of wavefront aberration. An example calculation showed a wavelength allowance of 20 nm for a numerical aperture of 0.7. This value is sufficient for use with laser diodes with mode hopping or multimode.

Paper Details

Date Published: 27 January 1989
PDF: 6 pages
Proc. SPIE 0965, Current Developments in Optical Engineering III, (27 January 1989); doi: 10.1117/12.948010
Show Author Affiliations
F. Yamagishi, Fujitsu Laboratories Ltd. (Japan)
M. Kato, Fujitsu Laboratories Ltd (Japan)
S. Maeda, Fujitsu Laboratories Ltd (Japan)
H. Ikeda, Fujitsu Laboratories Ltd (Japan)
T. Inagaki, Fujitsu Laboratories Ltd (Japan)


Published in SPIE Proceedings Vol. 0965:
Current Developments in Optical Engineering III
Robert E. Fischer; Warren J. Smith, Editor(s)

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