Abstract

The requirements for a broadband antireflective structure in the THz spectral region are derived. Optimized structural parameters for a surface-relief grating adapted to the spectrum of an intended THz pulse are deduced. The effect of a structure fabricated into Topas® by a single-point diamond-turning process is demonstrated.

© 2007 Optical Society of America

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  2. M. van Exter and D. R. Grischkowsky, "Characterization of an Optoelectronic Terahertz Beam System," IEEE Trans. Microwave Theory Tech. 38,1684 - 1691 (1990).
    [CrossRef]
  3. G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
    [CrossRef]
  4. Lord Rayleigh, "On Reflection of Vibrations at the Confines of two Media between which the Transition is Gradual," Proc. Lond. Math. Soc. 11,51 (1880).
    [CrossRef]
  5. M. Karlsson, and F. Nikolajeff, "Diamond micro-optics: microlenses and antireflection structured surfaces for the infrared spectral region," Opt. Express 11,502-507 (2003). http://www.opticsinfobase.org/abstract.cfm?URI=oe-11-5-502
    [CrossRef] [PubMed]
  6. A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
    [CrossRef]
  7. E. M. T. Jones and S. B. Cohn, "Surface matching of dielectric lenses," IRE International Convention Record 2,46-53 (1954).
    [CrossRef]
  8. D. G. Bodnar, and H. L. Bassett, "Analysis of an Anisotropic Dielectric Radome," IEEE Trans. Antennas Propag. 23,841-846 (1975).
    [CrossRef]
  9. R. Padman, "Reflection and Cross-Polarization Properties of Grooved Dielectric Panels," IEEE Trans. Antennas Propag. 26,741-743 (1978).
    [CrossRef]
  10. J. Y. L. Ma and L. C. Robinson, "Night moth eye window for the millimetre and sub-millimetre wave region," Optica Acta 30,1685-1695 (1983).
    [CrossRef]
  11. P. F. Goldsmith, Quasioptical Systems (IEEE Press, New York, 1998).
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  12. C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
    [CrossRef]
  13. B. Hu and M. C. Nuss, "Imaging with terahertz waves," Opt. Lett. 20,1716-1718 (1995).
    [CrossRef] [PubMed]
  14. D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
    [CrossRef]
  15. K. Kawase, Y. Ogawa, Y. Watanabe, and H. Inoue, "Non-destructive terahertz imaging of illicit drugs using spectral fingerprints," Opt. Express 11,2549-2554 (2003). http://www.opticsinfobase.org/abstract.cfm?URI=oe-11-20-2549
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  18. A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
    [CrossRef]
  19. E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
    [CrossRef]
  20. M. Neviere and E. Popov, Light Propagation in Periodic Media (Marcel Dekker, New York, Basel, 2003).
  21. P. B. Clapham and M. C. Hutley, "Reduction of Lens Reflection by the 'Moth Eye' Principle," Nature 244,281-282 (1973).
    [CrossRef]
  22. S. J. Wilson and M. C. Hutley, "The optical properties of 'moth eye' antireflection surfaces," Optica Acta 29,993-1009 (1982).
    [CrossRef]
  23. B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
    [CrossRef]
  24. B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
    [CrossRef]
  25. F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).
  26. A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
    [CrossRef]
  27. T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
    [CrossRef]

2006

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

H. Zhong, H. Redo-Sanchez, and X. Zhang, "Identification and classification of chemicals using terahertz reflective spectroscopic focal-plane imaging system," Opt. Express 14,9130-9141 (2006). http://www.opticsinfobase.org/abstract.cfm?URI=oe-14-20-9130
[CrossRef] [PubMed]

2005

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

2004

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

2003

1999

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

1998

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

1995

1994

E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
[CrossRef]

1990

M. van Exter and D. R. Grischkowsky, "Characterization of an Optoelectronic Terahertz Beam System," IEEE Trans. Microwave Theory Tech. 38,1684 - 1691 (1990).
[CrossRef]

1983

J. Y. L. Ma and L. C. Robinson, "Night moth eye window for the millimetre and sub-millimetre wave region," Optica Acta 30,1685-1695 (1983).
[CrossRef]

1982

S. J. Wilson and M. C. Hutley, "The optical properties of 'moth eye' antireflection surfaces," Optica Acta 29,993-1009 (1982).
[CrossRef]

1978

R. Padman, "Reflection and Cross-Polarization Properties of Grooved Dielectric Panels," IEEE Trans. Antennas Propag. 26,741-743 (1978).
[CrossRef]

1975

D. G. Bodnar, and H. L. Bassett, "Analysis of an Anisotropic Dielectric Radome," IEEE Trans. Antennas Propag. 23,841-846 (1975).
[CrossRef]

1973

P. B. Clapham and M. C. Hutley, "Reduction of Lens Reflection by the 'Moth Eye' Principle," Nature 244,281-282 (1973).
[CrossRef]

1954

E. M. T. Jones and S. B. Cohn, "Surface matching of dielectric lenses," IRE International Convention Record 2,46-53 (1954).
[CrossRef]

1880

Lord Rayleigh, "On Reflection of Vibrations at the Confines of two Media between which the Transition is Gradual," Proc. Lond. Math. Soc. 11,51 (1880).
[CrossRef]

Ambacher, O.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Baraniuk, R.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Bassett, H. L.

D. G. Bodnar, and H. L. Bassett, "Analysis of an Anisotropic Dielectric Radome," IEEE Trans. Antennas Propag. 23,841-846 (1975).
[CrossRef]

Beigang, R.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Blaikie, R. J.

T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
[CrossRef]

Bläsi, B.

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Bodnar, D. G.

D. G. Bodnar, and H. L. Bassett, "Analysis of an Anisotropic Dielectric Radome," IEEE Trans. Antennas Propag. 23,841-846 (1975).
[CrossRef]

Brückner, C.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Bühler, C.

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

Chong, H. M. H.

T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
[CrossRef]

Cimalla, V.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Clapham, P. B.

P. B. Clapham and M. C. Hutley, "Reduction of Lens Reflection by the 'Moth Eye' Principle," Nature 244,281-282 (1973).
[CrossRef]

Cohn, S. B.

E. M. T. Jones and S. B. Cohn, "Surface matching of dielectric lenses," IRE International Convention Record 2,46-53 (1954).
[CrossRef]

Cumming, D. R. S.

T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
[CrossRef]

Drysdale, T. D.

T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
[CrossRef]

Gebhardt, A.

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

Geelen, P.

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

Gombert, A.

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Grann, E. B.

E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
[CrossRef]

Grischkowsky, D. R.

M. van Exter and D. R. Grischkowsky, "Characterization of an Optoelectronic Terahertz Beam System," IEEE Trans. Microwave Theory Tech. 38,1684 - 1691 (1990).
[CrossRef]

Gupta, M.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Gürtler, A.

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

Heinzel, A.

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Helm, H.

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

Horbelt, W.

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Hu, B.

Hutley, M. C.

S. J. Wilson and M. C. Hutley, "The optical properties of 'moth eye' antireflection surfaces," Optica Acta 29,993-1009 (1982).
[CrossRef]

P. B. Clapham and M. C. Hutley, "Reduction of Lens Reflection by the 'Moth Eye' Principle," Nature 244,281-282 (1973).
[CrossRef]

Inoue, H.

Jepsen, P. U.

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

Jones, E. M. T.

E. M. T. Jones and S. B. Cohn, "Surface matching of dielectric lenses," IRE International Convention Record 2,46-53 (1954).
[CrossRef]

Karlsson, M.

Kawase, K.

Koch, M.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Lebedev, V.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Limpert, J.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Ma, J. Y. L.

J. Y. L. Ma and L. C. Robinson, "Night moth eye window for the millimetre and sub-millimetre wave region," Optica Acta 30,1685-1695 (1983).
[CrossRef]

Matthäus, G.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Mittleman, D. M.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Moharam, M. G.

E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
[CrossRef]

Neelamani, R.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Nikolajeff, F.

Nitz, P.

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

Nolte, S.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Notni, G.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

Nuss, M. C.

Ogawa, Y.

Padman, R.

R. Padman, "Reflection and Cross-Polarization Properties of Grooved Dielectric Panels," IEEE Trans. Antennas Propag. 26,741-743 (1978).
[CrossRef]

Pommet, D. A.

E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
[CrossRef]

Pradarutti, B.

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Redo-Sanchez, H.

Riehemann, S.

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

Robinson, L. C.

J. Y. L. Ma and L. C. Robinson, "Night moth eye window for the millimetre and sub-millimetre wave region," Optica Acta 30,1685-1695 (1983).
[CrossRef]

Rose, K.

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Rudd, J. V.

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

Schreiber, T.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Steinkopf, R.

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

Stenzel, O.

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

Torosyan, G.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Tünnermann, A.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

v. Hulst, F.

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

van Exter, M.

M. van Exter and D. R. Grischkowsky, "Characterization of an Optoelectronic Terahertz Beam System," IEEE Trans. Microwave Theory Tech. 38,1684 - 1691 (1990).
[CrossRef]

Watanabe, Y.

Wilson, S. J.

S. J. Wilson and M. C. Hutley, "The optical properties of 'moth eye' antireflection surfaces," Optica Acta 29,993-1009 (1982).
[CrossRef]

Winnewisser, C.

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

Wittwer, V.

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Zanke, C.

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Zhang, X.

Zhong, H.

Appl. Phys. B

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, and A. Tünnermann, "Electrooptical sampling of ultrashort THz pulses by fs-laser pulses at 1060 nm," Appl. Phys. B 85,59-62 (2006).
[CrossRef]

D. M. Mittleman, M. Gupta, R. Neelamani, R. Baraniuk, J. V. Rudd, and M. Koch, "Recent advances in terahertz imaging," Appl. Phys. B 68,1085-1094 (1999).
[CrossRef]

IEEE Trans. Antennas Propag.

T. D. Drysdale, R. J. Blaikie, H. M. H. Chong, and D. R. S. Cumming, "Artificial Dielectric Devices for Variable Polarization Compensation at Millimeter and Submillimeter Wavelengths," IEEE Trans. Antennas Propag. 51, 3072-3079 (2003).
[CrossRef]

D. G. Bodnar, and H. L. Bassett, "Analysis of an Anisotropic Dielectric Radome," IEEE Trans. Antennas Propag. 23,841-846 (1975).
[CrossRef]

R. Padman, "Reflection and Cross-Polarization Properties of Grooved Dielectric Panels," IEEE Trans. Antennas Propag. 26,741-743 (1978).
[CrossRef]

IEEE Trans. Microwave Theory Tech.

M. van Exter and D. R. Grischkowsky, "Characterization of an Optoelectronic Terahertz Beam System," IEEE Trans. Microwave Theory Tech. 38,1684 - 1691 (1990).
[CrossRef]

Industrial Diamond Review

F. v. Hulst, P. Geelen, A. Gebhardt, and R. Steinkopf, "Diamond tools for producing micro-optic elements," Industrial Diamond Review 3, 58-62 (2005).

IRE International Convention Record

E. M. T. Jones and S. B. Cohn, "Surface matching of dielectric lenses," IRE International Convention Record 2,46-53 (1954).
[CrossRef]

J. Opt. Soc. Am A

A. Gürtler, C. Winnewisser, H. Helm, and P. U. Jepsen, "Terahertz pulse propagation in the near field and the far field," J. Opt. Soc. Am A 17,74 - 83 (1999).
[CrossRef]

E. B. Grann, M. G. Moharam, and D. A. Pommet, "Artificial uniaxial and biaxial dielectrics with use of two-dimensional subwavelength binary gratings," J. Opt. Soc. Am A 11,2695 - 2703 (1994).
[CrossRef]

Nature

P. B. Clapham and M. C. Hutley, "Reduction of Lens Reflection by the 'Moth Eye' Principle," Nature 244,281-282 (1973).
[CrossRef]

Opt. Commun.

G. Matthäus, T. Schreiber, J. Limpert, S. Nolte, G. Torosyan, R. Beigang, S. Riehemann, G. Notni, and A. Tünnermann, "Surface-emitted THz generation using a compact ultrashort pulse fiber amplifier at 1060 nm," Opt. Commun. 261,114-117 (2006).
[CrossRef]

Opt. Eng.

A. Gombert, B. Bläsi, C. Bühler, and P. Nitz, "Some application cases and related manufacturing techniques for optically functional microstructures on large areas," Opt. Eng. 43,2525-2533 (2004).
[CrossRef]

Opt. Express

Opt. Lett.

Optica Acta

S. J. Wilson and M. C. Hutley, "The optical properties of 'moth eye' antireflection surfaces," Optica Acta 29,993-1009 (1982).
[CrossRef]

J. Y. L. Ma and L. C. Robinson, "Night moth eye window for the millimetre and sub-millimetre wave region," Optica Acta 30,1685-1695 (1983).
[CrossRef]

Proc. Lond. Math. Soc.

Lord Rayleigh, "On Reflection of Vibrations at the Confines of two Media between which the Transition is Gradual," Proc. Lond. Math. Soc. 11,51 (1880).
[CrossRef]

Proc. SPIE

C. Brückner, B. Pradarutti, S. Riehemann, O. Stenzel, R. Steinkopf, A. Gebhardt, G. Notni, and A. Tünnermann, "Moth-eye structures for reduction of Fresnel losses at THz components," Proc. SPIE 6194,61940N (2006).
[CrossRef]

B. Pradarutti, G. Matthäus, C. Brückner, S. Riehemann, G. Notni, S. Nolte, V. Cimalla, V. Lebedev, O. Ambacher, and A. Tünnermann, "InN as THz emitter excited at 1060 nm and 800 nm," Proc. SPIE 6194,61940I (2006).
[CrossRef]

Sol. Energy Mater. Sol. Cells

A. Gombert, K. Rose, A. Heinzel, W. Horbelt, C. Zanke, B. Bläsi, and V. Wittwer, "Antireflective submicrometer surface-relief gratings for solar applications," Sol. Energy Mater. Sol. Cells 54,333-342 (1998).
[CrossRef]

Other

B. Bläsi, Holographisch hergestellte Antireflexoberflächen für solare und visuelle Anwendungen (Albert-Ludwigs-Universität, Fakultät für Physik, Freiburg i. Br., Diss., 2000).

P. F. Goldsmith, Quasioptical Systems (IEEE Press, New York, 1998).
[CrossRef]

M. Neviere and E. Popov, Light Propagation in Periodic Media (Marcel Dekker, New York, Basel, 2003).

D. Mittleman, Sensing with Terahertz Radiation (Springer, Berlin Heidelberg, 2003).

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Figures (11)

Fig. 1.
Fig. 1.

1D binary grating with incident wave vector k determined by polar angle θi, azimuth angle ϕ and grating vector K.

Fig. 2.
Fig. 2.

Dependence of the reflectance from d/λ of the 1D structure with triangular cross-section determined by RCWA (a) and grating parameters (b).

Fig. 3.
Fig. 3.

Reflectance (a) and transmittance (b) for the TE and TM polarization of the 1D subwavelength grating with triangular cross-section with Λ = 50 μm and d = 100 μm at perpendicular incidence determined by RCWA. The inset shows the reflectance of a quarter-wave layer for a design wavelength of λ = 300 μm (f = 1 THz).

Fig. 4.
Fig. 4.

Reflectance (a) and transmittance (b) for the TE and TM polarization of the subwavelength grating with triangular cross-section with Λ = 0.5 mm and d = 1 mm at perpendicular incidence determined by RCWA.

Fig. 5.
Fig. 5.

Reflectance (a) and transmittance (b) for the TE and TM polarization of the 2D pyramidal subwavelength grating with Λ =50 μm and d = 100 μm at perpendicular incidence determined by RCWA.

Fig. 6.
Fig. 6.

Reflectance (a) and transmittance (b) for the TE and TM polarization of the 1D subwavelength grating with triangular cross-section with Λ = 100 μm and d = 200 μm at perpendicular incidence determined by RCWA.

Fig. 7.
Fig. 7.

Structured Topas® sample (a), microscope picture of a cross-section of structure in the outer region (b) and microscope picture of the center cross-section (c).

Fig. 8:
Fig. 8:

Average of the measured waveforms of the structured and unstructured sample (a) and average of the spectral intensity (b).

Fig. 9:
Fig. 9:

Measured and theoretical ratio of the transmittance of the unstructured to the structured sample at a single sample in the setup.

Fig. 10:
Fig. 10:

Average of the measured waveforms of two structured and two unstructured samples (a) and average of the spectral intensity (b).

Fig. 11:
Fig. 11:

Measured and theoretical ratio of the transmittance of the unstructured to the structured sample at two samples in the setup.

Equations (5)

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

Λ λ n i sin θ i cos ϕ + ( n s 2 n i 2 sin 2 θ i sin 2 ϕ ) 1 2 ,
Λ λ n i + n s
Λ λ n s
d Λ = 1 2 tan ( α 2 )
R theo ( f ) = 0.96 m T ( f ) m 100 %

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