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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 21, Iss. 1 — Jan. 1, 1996
  • pp: 80–82

Wavelength-selective planar holograms

Joseph E. Ford, Fang Xu, and Yeshayahu Fainman  »View Author Affiliations


Optics Letters, Vol. 21, Issue 1, pp. 80-82 (1996)
http://dx.doi.org/10.1364/OL.21.000080


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Abstract

Planar gratings and holograms are normally readout-wavelength insensitive. We show, however, that a binary phase surface-relief hologram can be transparent at one wavelength (λ) yet diffract efficiently at another (λ′), provided that the phase delay is an integer number of waves (e.g., 3) at λ and a half-integer number of waves (e.g., 2.5) at λ′. We fabricated a 7.9-μm-deep binary phase grating in BK7 glass that separates the standard telecommunications wavelengths, 1.3 and 1.55 μm, with 80% efficiency (neglecting Fresnel losses) and greater than 30:1 contrast.

© 1996 Optical Society of America

History
Original Manuscript: August 4, 1995
Published: January 1, 1996

Citation
Joseph E. Ford, Fang Xu, and Yeshayahu Fainman, "Wavelength-selective planar holograms," Opt. Lett. 21, 80-82 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-1-80

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