Abstract

We fabricated a large curved computer-generated hologram pattern on the concave substrate with diameter of 110mm and radius of curvature of 504mm. The line width of the hologram varied form 39um to 810um. We adopt the single pass and the screw-lines to fabricate this curved hologram precisely and efficiently. 80% of the fabrication time is saved by this method. This work will be useful to the measurement of large convex secondary mirrors that is also hardness at present.

© 2004 Optical Society of America

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References

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Jpn. J. Appl. Phys.

T. Harada, S. Moriyama, and T. Kita, �??Mechanically ruled stigmatic concave gratings,�?? Jpn. J. Appl. Phys. 14, 175-179 (1974).

Opt. Eng.

M. T. Gale, M. Rossi, J. Pedersen, and H. Schutz, �??Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresists,�?? Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

T. D. Milster and C. L. Vernold, �??Technique for aligning optical and mechanical axes based on a rotating linear grating,�?? Opt. Eng. 34, 2840-2844 (1995).
[CrossRef]

Opt. Express

Proc. SPIE

C. L. Vernold and T. D. Milster, �??Non-photolithographic fabrication of large computer-generated diffractive optical elements,�?? in Current Developments in Optical Design and Optical Engineering IV, R. E. Fischer and W. J. Smith, eds., Proc. SPIE 2263, 125-133 (1994).
[CrossRef]

J. H. Burge, D. S. Anderson, T. D. Milster, and C. L. Vernold, �??Measurement of a convex secondary mirror using a holographic test plat,�?? in Advanced Technology Optical Telescopes V, L. M. Stepp, ed., Proc. SPIE, 2199, 193-198 (1994).
[CrossRef]

Proc. SPIE.

Z. Lu and Z. Weng, �??Lens centering by using binary phase grating,�?? in Current Developments in Lens Design and Optical Systems Engineering, R. E. Fischer, R. B. Johnson, W. J. Smith, and W. H. Swantner, eds., Proc. SPIE. 4093, 176-180 (2000).
[CrossRef]

Science

R. J. Jackman, S. T. Brittain, A. Adams, M. G. Prentiss, and G. M. Whitesides, �??Design and fabrication of topologically complex, three-dimensional microstructures,�?? Science 280, 2091-2098 (1998).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

The overlap writing method of laser writer.

Fig. 2
Fig. 2

The combination of single pass and screw line to precisely write large zone.

Fig. 3.
Fig. 3.

Schematic of the laser writer system.

Fig. 4
Fig. 4

Part three-dimensional plot of the large curved hologram.

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