OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 22, Iss. 5 — Mar. 1, 1997
  • pp: 337–339

Real-time enhancement of defects in periodic patterns by use of a bacteriorhodopsin film

Takayuki Okamoto, Ichirou Yamaguchi, and Kenji Yamagata  »View Author Affiliations


Optics Letters, Vol. 22, Issue 5, pp. 337-339 (1997)
http://dx.doi.org/10.1364/OL.22.000337


View Full Text Article

Acrobat PDF (545 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We present a real-time optical system to enhance defects in periodic patterns by use of nonlinear spatial filtering by real-time holography. A straight and equispaced grating written in a bacteriorhodopsin film is read by the Fourier transform of a periodic pattern to be inspected. Because the diffraction efficiency of the grating depends on the intensity of the reading beam, only the defect component can be selectively diffracted and imaged. This system is applicable even to moving objects. We present experimental results that show enhancement of defects as small as 10 µm in a photomask with a pixel pitch of 150 µm used for a liquid-crystal display.

© 1997 Optical Society of America

Citation
Takayuki Okamoto, Ichirou Yamaguchi, and Kenji Yamagata, "Real-time enhancement of defects in periodic patterns by use of a bacteriorhodopsin film," Opt. Lett. 22, 337-339 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-5-337


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. B. E. Dom, V. H. Brecher, R. Bonner, J. S. Batchelder, and S. Jaffe, Mach. Vis. Appl. 1, 205 (1988).
  2. R. L. Fusek, L. H. Lin, K. Harding, and S. Gustafson, Opt. Eng. 24, 731 (1985).
  3. D. L. Cavan, L. H. Lin, R. B. Howe, R. E. Graves, and L. Fusek, J. Vac. Sci. Technol. B 6, 1934 (1988).
  4. E. Ochoa, J. W. Goodman, and L. Hesselink, Opt. Lett. 10, 430 (1985).
  5. C. Uhrich and L. Hesselink, Opt. Lett. 17, 1087 (1992).
  6. C. Uhrich and L. Hesselink, Appl. Opt. 33, 744 (1994).
  7. L. Nikolova and T. Todorov, Opt. Acta 31, 579 (1984).
  8. N. Hampp, R. Thoma, D. Oesterhelt, and C. Bräuchle, Appl. Opt. 31, 1834 (1992).
  9. H. Kogelnik, Bell Syst. Tech. J. 48, 2902 (1969).
  10. T. Huang and K. H. Wagner, Appl. Opt. 32, 1888 (1993).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited