Design and development of Binary Diffractive Germanium Lens by thin film deposition

M. Alshami; A. Wabby; M. F. Mousselly

doi:10.2971/jeos.2015.15055

Journal of the European Optical Society - Rapid publications, Vol 10 (2015)

Design and development of Binary Diffractive Germanium Lens by thin film deposition

M. Alshami, A. Wabby, M. F. Mousselly

Abstract

The design and development of infrared (λ: [8]–[12] µm) binary diffractive germanium lens (BDGL) by two - steps thin film deposition (Physical vapor deposition (PVD) technique) is presented. The optical design of the required elements using the optical design code Zemax, the design of the 4 steps binary surface and its required metallic masks using the programming language Delphi, the procedures of fabrication, and the measurement of the resulting profile, were presented. The comparison between the refractive/diffractive lenses by measuring the minimum resolvable temperature difference (MRTD) shows the advantages of binary diffractive surface.

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References

L. Rayleigh, ”laboratory notebook,” in Physical Optics, R. W. Wood, ed., 37–38 (Macmillan, New York, 1934).

J. Jahns, and S. J. Walker, ”Two-dimensional array of diffractive microlenses fabricated by thin film deposition,” Appl. Optics 29(7), 931–936 (1990).

H. Dammann, ”Blazed Synthetic Phase-Only Holograms,” Optic 31, 95–104 (1970).

J. A. Jordan, Jr., P. M. Hirsch, L. B. Lesem, and D. L. Van Rooy, ”Kinoform Lenses,” Appl. Optics 9, 1883–1887 (1970).

G. J. Swanson, and W. B. Veldkamp, ”Diffractive Optical Elements for Use in Infrared Systems,” Opt. Eng. 28, 605–608 (1989).

K. Miyamoto, ”The Phase Fresnel Lens,” J. Opt. Soc. Am. 51, 17–20 (1961).

P. P. Clark, and C. Londofio, ”Production of Kinoforms by Single Point Diamond Machining,” Opt. News 15, 39–40 (1989).

L. d’Auria, J. P. Huignard, A. M. Roy, and E. Spitz, ”Photolithographic Fabrication of Thin Film Lenses,” Opt. Commun. 5, 232–235 (1972).

V. P. Koronkevich, ”Computer Synthesis of Diffraction Optical Elements,” in Optical Processing and Computing, H. H. Arsenault, T. Szoplik, and B. Macukow, eds., 277–313 (Academic Press, Boston, 1989).

G. J. Swanson, Binary Optics Technology (Massachusetts Institute of Technology, Cambridge, 1989).

M. J. Riedl, and J. T. McCann, ”Analysis and Performance Limits of Diamond Turned Diffractive Lenses for the 3-5 and 8-12 Micrometer Regions,” in Infrared Optical Design and Fabrication, R. Harsman, and W. J. Smith, eds., 153–163 (SPIE Press, Bellingham, 1991).

A. Motogaito, and K. Hiramatsu, ”Fabrication of Binary Diffractive Lens on Optical Films by Electron Beam Lithography,” in Advances in Unconventional Lithography, G. Kostovski, ed., 139–148 (InTech, Rijeka, 2011).

L. D’Auria, J. P. Huignard, A. M. Roy, and E. Spitz, ”Photolithographic Fabrication of Thin Film Lenses,” Opt. Commun. 5, 232–235 (1972).

Zemax Product content, http://www.zemax.com.

R. E. Fischer, B. Tadic-Galeb, and P. R. Yoder, Optical System Design (Mcgraw Hill Book, New York City, 2008).

Inframet, The DT 2000G measuring set no 01406 for testing thermal imagers, manual version 2.2.