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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 19, Iss. 2 — Feb. 1, 2002
  • pp: 319–329

Influence of substrate-lens design in terahertz time-domain spectroscopy

J. Van Rudd and Daniel M. Mittleman  »View Author Affiliations

JOSA B, Vol. 19, Issue 2, pp. 319-329 (2002)

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We describe measurements of the angular radiation patterns from lens-coupled terahertz antennas fabricated on photoconductive substrates. These measurements were performed with a novel terahertz (THz) time-domain spectrometer in which the femtosecond optical pulses used to gate the emitter and receiver antennas were delivered by optical fiber. We used this system to perform a comparison between the two substrate-lens designs commonly used in THz time-domain spectrometers. We measured both E-plane and H-plane emission patterns for a 90° bow-tie antenna. By comparing these experimental results with simulations based on Fresnel–Kirchoff diffraction, we find that the choice of substrate-lens design is important in determining not only the directivity of the emitted beam but also the spectral bandwidth. These results emphasize the significance of this crucial component in the design of broadband THz spectrometers.

© 2002 Optical Society of America

OCIS Codes
(300.0300) Spectroscopy : Spectroscopy
(320.0320) Ultrafast optics : Ultrafast optics
(320.7080) Ultrafast optics : Ultrafast devices

J. Van Rudd and Daniel M. Mittleman, "Influence of substrate-lens design in terahertz time-domain spectroscopy," J. Opt. Soc. Am. B 19, 319-329 (2002)

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  1. M. C. Nuss and J. Orenstein, “Terahertz time-domain spectroscopy (THz-TDS),” in Millimeter and Sub-Millimeter-Wave Spectroscopy of Solids, G. Grüner, ed. (Springer-Verlag, Berlin, 1998).
  2. C. Fattinger and D. Grischkowsky, “Terahertz beams,” Appl. Phys. Lett. 54, 490–492 (1989).
  3. P. R. Smith, D. H. Auston, and M. C. Nuss, “Subpicosecond photoconducting dipole antennas,” IEEE J. Quantum Electron. 24, 255–260 (1988).
  4. D. M. Mittleman, R. H. Jacobsen, and M. C. Nuss, “T-ray imaging,” IEEE J. Sel. Top. Quantum Electron. 2, 679–692 (1996).
  5. J. V. Rudd, D. Zimdars, and M. Warmuth, “Compact, fiber-pigtailed terahertz imaging system,” Proc. SPIE 3934, 27–35 (2000).
  6. M. van Exter and D. Grischkowsky, “Characterization of an optoelectronic terahertz beam system,” IEEE Trans. Microwave Theory Tech. 38, 1684–1691 (1990).
  7. P. U. Jepsen, R. H. Jacobsen, and S. R. Keiding, “Generation and detection of terahertz pulses from biased semiconductor antennas,” J. Opt. Soc. Am. B 13, 2424–2436 (1996).
  8. C. Ludwig and J. Kuhl, “Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches,” Appl. Phys. Lett. 69, 1194–1196 (1996).
  9. A. Kaplan, “Diffraction-induced transformation of near-cycle and subcycle pulses,” J. Opt. Soc. Am. B 15, 951–956 (1998).
  10. A. B. Ruffin, J. V. Rudd, J. F. Whitaker, S. Feng, and H. G. Winful, “Direct observation of the Gouy phase shift with single-cycle terahertz pulses,” Phys. Rev. Lett. 83, 3410–3413 (1999).
  11. S. Hunsche, S. Feng, H. G. Winful, A. Leitenstorfer, M. C. Nuss, and E. P. Ippen, “Spatiotemporal focusing of single-cycle light pulses,” J. Opt. Soc. Am. A 16, 2025–2028 (1999).
  12. N. M. Froberg, B. B. Hu, X.-C. Zhang, and D. H. Auston, “Terahertz radiation from a photoconducting antenna array,” IEEE J. Quantum Electron. 28, 2291–2301 (1992).
  13. P. Jepsen and S. R. Keiding, “Radiation patterns from lens-coupled terahertz antennas,” Opt. Lett. 20, 807–809 (1995).
  14. J. V. Rudd, J. L. Johnson, and D. M. Mittleman, “Quadrupole radiation from terahertz dipoles,” Opt. Lett. 25, 1556–1558 (2000).
  15. J. V. Rudd, J. L. Johnson, and D. M. Mittleman, “Cross-polarized angular emission patterns from lens-coupled terahertz antennas,” J. Opt. Soc. Am. B 18, 1524–1533 (2001).
  16. D. B. Rutledge and M. S. Muha, “Imaging antenna arrays,” IEEE Trans. Antennas Propag. 30, 535–540 (1982).
  17. D. B. Rutledge, D. P. Neikirk, and D. P. Kasilingam, “Integrated-circuit antennas,” in Infrared and Millimeter Waves, K. J. Button, ed. (Academic, New York, 1983), Vol. 10, pp. 1–90.
  18. G. M. Rebeiz, “Millimeter-wave and terahertz integrated circuit antennas,” Proc. IEEE 80, 1748–1770 (1992).
  19. G. V. Eleftheriades, Y. Brand, J.-F. Zürcher, and J. R. Mosig, “ALPSS: a millimeter-wave aperture-coupled patch antenna on a substrate lens,” Electron. Lett. 33, 169–170 (1997).
  20. G. Chattopadhyay, D. Miller, H. G. LeDuc, and J. Zmuidzinas, “A dual-polarized quasi-optical SIS mixer at 550 GHz,” IEEE Trans. Microwave Theory Tech. 48, 1680–1686 (2000).
  21. M. van Exter, C. Fattinger, and D. Grischkowsky, “High-brightness terahertz beams characterized with an ultrafast detector,” Appl. Phys. Lett. 55, 337–339 (1989).
  22. S.-G. Park, M. R. Melloch, and A. M. Weiner, “Analysis of terahertz waveforms measured by photoconductive and electrooptic sampling,” IEEE J. Quantum Electron. 35, 810–819 (1999).
  23. M. Born and E. Wolf, Principles of Optics, 3rd ed. (Pergamon, Oxford, 1965).
  24. D. F. Filipovic, S. S. Gearhart, and G. M. Rebeiz, “Double-slot antennas on extended hemispherical and elliptical silicon dielectric lenses,” IEEE Trans. Microwave Theory Tech. 41, 1738–1749 (1993).
  25. W. B. Dou, G. Zeng, and Z. L. Sun, “Pattern prediction of extended hemispherical lens/objective lens antenna system at millimeter wavelengths,” IEE Proc. Microwave Antennas Propag. 145, 295–298 (1998).
  26. J. R. Bray and L. Roy, “Performance trade-offs of substrate lens antennas,” in Proceedings of the Symposium on Antenna Technology and Applied Electromagnetics (University of Manitoba, Winnipeg, 1998), pp. 321–324.
  27. P. U. Jepsen, “THz radiation patterns from dipole antennas and guided ultrafast pulse propagation,” M.S. thesis (Fysisk Institut, Odense Universitet, Odense, Denmark, 1994).
  28. W. Lukosz, “Light emission by magnetic and electric dipoles close to a plane dielectric interface. III. Radiation patterns of dipoles with arbitrary orientation,” J. Opt. Soc. Am. 69, 1495–1503 (1979).
  29. C. R. Brewitt-Taylor, D. J. Gunton, and H. D. Rees, “Planar antennas on a dielectric surface,” Electron. Lett. 17, 729–731 (1981).
  30. G. H. Brown and O. M. Woodward, “Experimentally determined radiation characteristics of conical and triangular antennas,” RCA Rev. 13, 425–452 (1952).
  31. R. C. Compton, R. C. McPhedran, Z. Popovic, G. M. Rebeiz, P. P. Tong, and D. B. Rutledge, “Bow-tie antennas on a dielectric half-space: theory and experiment,” IEEE Trans. Antennas Propag. 35, 622–631 (1987).
  32. K. L. Shlager, G. S. Smith, and J. G. Maloney, “Optimization of bow-tie antennas for pulse radiation,” IEEE Trans. Antennas Propag. 42, 975–982 (1994).
  33. D. Grischkowsky, S. Keiding, M. van Exter, and C. Fattinger, “Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors,” J. Opt. Soc. Am. B 7, 2006–2015 (1990).
  34. 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 (2000).
  35. R. W. McGowan, G. Gallot, and D. Grischkowsky, “Propagation of ultrawideband short pulses of terahertz radiation through submillimeter-diameter circular waveguides,” Opt. Lett. 24, 1431–1433 (1999).
  36. S. Hunsche, M. Koch, I. Brener, and M. C. Nuss, “THz near-field imaging,” Opt. Commun. 150, 22–26 (1998).
  37. B. B. Hu and M. C. Nuss, “Imaging with terahertz waves,” Opt. Lett. 20, 1716–1719 (1995).
  38. H. Jasik, Antenna Engineering Handbook, 1st ed. (McGraw-Hill, New York, 1961).

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