Abstract

We propose an optical pickup that acquires data from both layers of a dual-layer digital versatile disk simultaneously. An adaptive optical element that uses liquid crystals creates two axial foci separated by a spacing of 55 µm, which is the distance between the two layers. The spacing between the foci can be varied by the adaptive element. The separation of the reflected light into TE and TM polarized light, corresponding to each of the layers, is made by dielectric gratings that are characterized by high aspect ratios. Electron-beam lithography and reactive ion etching techniques were used to produce the submicrometer structures. All fabricated elements were assembled in a pickup system, whose properties were measured.

© 2001 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. Taylor, DVD Demystified (McGraw-Hill, New York, 1997).
  2. Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
    [CrossRef]
  3. I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
    [CrossRef]
  4. D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.
  5. M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
    [CrossRef]
  6. M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).
  7. H. Haidner, “Binary subwavelength structures/resonance gratings as polarisation elements,” Pure Appl. Opt. 7, 1347–1361 (1998).
    [CrossRef]
  8. P. Lalanne, G. M. Morris, “Highly improved convergence of the coupled-wave method for TM polarization,” J. Opt. Soc. Am. A 13, 779–784 (1996).
    [CrossRef]
  9. R. C. Enger, S. K. Case, “Optical elements with ultrahigh spatial-frequency surface corrugations,” Appl. Opt. 22, 3220–3228 (1983).
    [CrossRef] [PubMed]
  10. W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
    [CrossRef]
  11. T. Shiono, H. Ogawa, “Planar-optic-disk pickup with diffractive micro-optics,” Appl. Opt. 33, 7350–7355 (1994).
    [CrossRef] [PubMed]

1998 (3)

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

H. Haidner, “Binary subwavelength structures/resonance gratings as polarisation elements,” Pure Appl. Opt. 7, 1347–1361 (1998).
[CrossRef]

1996 (1)

1994 (1)

1983 (1)

Arimoto, Y.

W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
[CrossRef]

Bhattacharya, S.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Case, S. K.

Choi, I.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Chung, W.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Dias, D.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

Enger, R. C.

Eom, I.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Ferstl, M.

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

Glöckner, R.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Haidner, H.

H. Haidner, “Binary subwavelength structures/resonance gratings as polarisation elements,” Pure Appl. Opt. 7, 1347–1361 (1998).
[CrossRef]

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

Hain, M.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Hayano, Y.

W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
[CrossRef]

Ide, M.

W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
[CrossRef]

Kim, J.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Kim, Y.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Klaus, W.

W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
[CrossRef]

Komma, Y.

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

Lalanne, P.

Mizuno, S.

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

Morris, G. M.

Nagashima, K.

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

Ogawa, H.

Park, H.

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Shiono, T.

Stankovic, S.

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Steingrüber, R.

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

Tanaka, Y.

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

Taylor, J.

J. Taylor, DVD Demystified (McGraw-Hill, New York, 1997).

Tschudi, T.

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Wang, L. L.

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

Yamagata, M.

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

Appl. Opt. (2)

J. Opt. Soc. Am. A (1)

Jpn. J. Appl. Phys. (2)

Y. Tanaka, M. Yamagata, Y. Komma, S. Mizuno, K. Nagashima, “Lens design for optical head compatible with compact disk and digital versatile disk,” Jpn. J. Appl. Phys. 37, 2179–2183 (1998).
[CrossRef]

I. Choi, W. Chung, Y. Kim, I. Eom, H. Park, J. Kim, “Compact disk/digital video disk–compatible optical actuator for high density and high speed,” Jpn. J. Appl. Phys. 37, 2189–2196 (1998).
[CrossRef]

Pure Appl. Opt. (1)

H. Haidner, “Binary subwavelength structures/resonance gratings as polarisation elements,” Pure Appl. Opt. 7, 1347–1361 (1998).
[CrossRef]

Other (5)

W. Klaus, M. Ide, Y. Hayano, Y. Arimoto, “Efficient liquid crystal wavefront modulator,” in Liquid Crystal Materials, Devices, and Applications V, R. Shashidhar, ed., Proc. SPIE3015, 84–92 (1997).
[CrossRef]

J. Taylor, DVD Demystified (McGraw-Hill, New York, 1997).

D. Dias, H. Haidner, L. L. Wang, S. Stankovic, T. Tschudi, M. Ferstl, R. Steingrüber, “High frequency gratings as polarisation elements for applications to DVD pickup systems,” submitted to J. Pure Appl. Phys.

M. Ferstl, R. Steingrüber, D. Dias, S. Stankovic, H. Haidner, “High-frequency gratings as polarization elements,” in Micromachine Technology for Diffractive and Holographic Optics, S. H. Lee, J. Cox, eds., Proc. SPIE3879, 138–146 (1999).
[CrossRef]

M. Hain, S. Bhattacharya, D. Dias, R. Glöckner, S. Stankovic, T. Tschudi, “Fast switching liquid crystal lenses for a dual focus DVD pickup head,” Opt. Commun. (to be published).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (11)

Fig. 1
Fig. 1

Pickup design for a dual-layer DVD. PBSG, polarizing beam-splitter grating; BSG, beam-splitting grating.

Fig. 2
Fig. 2

Scanning-electron microscope picture of a PBS.

Fig. 3
Fig. 3

Diffraction efficiencies of PBS samples.

Fig. 4
Fig. 4

Calculated diffraction efficiencies for (a) TE and (b) TM polarization.

Fig. 5
Fig. 5

Calculated extinction ratios for (a) the zeroth order and (b) the first order.

Fig. 6
Fig. 6

Two types of LC element: (a) CLC lens, (b) ADLC lens.

Fig. 7
Fig. 7

Part of the electrode structure of the ADLC lens.

Fig. 8
Fig. 8

Demonstration of the pickup system.

Fig. 9
Fig. 9

(a) Integrated pickup concept, (b) optical module.

Fig. 10
Fig. 10

Focus-error signals measured for both layers.

Fig. 11
Fig. 11

Intensity signal obtained by knife-edge measurement.

Tables (2)

Tables Icon

Table 1 Design Parameters of the Diffractive Optical Elementsa

Tables Icon

Table 2 Experimental Results for the PBSa

Equations (1)

Equations on this page are rendered with MathJax. Learn more.

ϕx, y=2πλf12+x2+y21/2+x2f2+ny sin α-f1,

Metrics