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Optics Letters

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  • Vol. 24, Iss. 9 — May. 1, 1999
  • pp: 605–607

Pupil-plane filtering for improved signal detection in an optical data-storage system incorporating a solid immersion lens

Tom D. Milster, Kei Shimura, Joshua S. Jo, and Kusato Hirota  »View Author Affiliations


Optics Letters, Vol. 24, Issue 9, pp. 605-607 (1999)
http://dx.doi.org/10.1364/OL.24.000605


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Abstract

A pupil-plane filtering technique is applied to data-signal detection in an optical data-storage system that uses a solid immersion lens (SIL) and a four-layered phase-change recording medium. We have confirmed by numerical calculations and experiment that the technique improves signal contrast and makes the contrast less sensitive to the gap width between the bottom surface of the SIL and the top surface of the recording medium. Light that is incident upon the objective lens that is used with the SIL is linearly polarized, and the full vectorial feature of the light is considered in the calculations.

© 1999 Optical Society of America

OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(210.0210) Optical data storage : Optical data storage
(260.1960) Physical optics : Diffraction theory
(260.6970) Physical optics : Total internal reflection

Citation
Tom D. Milster, Kei Shimura, Joshua S. Jo, and Kusato Hirota, "Pupil-plane filtering for improved signal detection in an optical data-storage system incorporating a solid immersion lens," Opt. Lett. 24, 605-607 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-9-605


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References

  1. I. Ichimura, S. Hayashi, and G. S. Kino, Appl. Opt. 36, 4339 (1997).
  2. T. D. Milster, J. S. Jo, K. Hirota, and K. Shimura, in Digest of the International Symposium on Optical Memory, Tsukuba, 1998 (Japanese Society of Applied Optics, Tokyo, 1998), paper Pd-15.
  3. T. D. Milster, J. S. Jo, K. Hirota, K. Shimura, and Y. Zhang, “The nature of the coupling field in optical data storage in solid immersion lens systems,” Jpn. J. Appl. Phys. (to be published).
  4. D. G. Flagello, T. D. Milster, and A. E. Rosenbluth, J. Opt. Soc. Am. A 13, 53 (1996).
  5. T. D. Milster, J. S. Ko, and K. Hirota, “The roles of propagating and evanescent waves in solid immersion lenses” (to be submitted to Appl. Opt.).

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