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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 22, Iss. 18 — Sep. 15, 1997
  • pp: 1373–1375

Lossless light projection

J. Glückstad, L. Lading, H. Toyoda, and T. Hara  »View Author Affiliations


Optics Letters, Vol. 22, Issue 18, pp. 1373-1375 (1997)
http://dx.doi.org/10.1364/OL.22.001373


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Abstract

A new technique for energy-preserving phase-only light projection is demonstrated. The phase-only encoding is based on an extension of the Zernike phase-contrast method into the domain of full-range [0; 2π ] phase modulation, breaking the usual small-phase-angle limitation. Controlling the spatial average value of the input-phase pattern and choosing appropriate phase retardation at the phase-contrast filter yield pure-phase-based image formation. Experimental results demonstrate close to 90% energy efficiency. Output intensity levels with magnitudes more than 3.5times that of the input intensity level were measured in the brightest regions of the projected images.

© 1997 Optical Society of America

Citation
J. Glückstad, L. Lading, H. Toyoda, and T. Hara, "Lossless light projection," Opt. Lett. 22, 1373-1375 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-18-1373


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References

  1. See the special issue on computer optics, Opt. Lasers Eng. 15, 293–371 (1991).
  2. B. Löfving, Appl. Opt. 36, 2347 (1997).
  3. C. F. Ageshin, A. A. Azarov, V. V. Popov, and I. N. Sisakyan, Comput. Opt. 2, 81 (1990).
  4. J. Glückstad, Opt. Commun. 130, 225 (1996).
  5. J. Glückstad, “Phase-contrast imaging,” patent WO 96/34307 (October 31, 1996).
  6. N. Mukohzaka, N. Yoshida, H. Toyoda, Y. Kobayashi, and T. Hara, Appl. Opt. 33, 2804 (1994).
  7. J. Glückstad, Opt. Commun. 120, 194 (1995).

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