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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 18 — Sep. 5, 2005
  • pp: 7028–7034

Coupling of terahertz pulses onto a single metal wire waveguide using milled grooves

Hua Cao and Ajay Nahata  »View Author Affiliations

Optics Express, Vol. 13, Issue 18, pp. 7028-7034 (2005)

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We demonstrate a novel approach for coupling freely propagating THz pulses onto a metal wire waveguide utilizing grooves fabricated directly into the metal. Using broadband THz pulses incident on the wire, we use metal segments containing zero, one, three, and eight uniformly spaced grooves to launch surface propagating multi-cycle pulses along the wire. We observe a one-to-one correspondence between the groove number and the number of oscillations in the THz waveform radiated from the end of the waveguide. We further demonstrate that this coupled radiation is radially polarized. Although the cross-sectional parameters of the grooves are identical in the present measurements, alteration of the individual grooves in a controlled manner should allow for arbitrarily shaped THz pulses to be launched on the waveguide.

© 2005 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(260.3090) Physical optics : Infrared, far
(320.5550) Ultrafast optics : Pulses

ToC Category:
Research Papers

Original Manuscript: July 27, 2005
Revised Manuscript: August 25, 2005
Published: September 5, 2005

Hua Cao and Ajay Nahata, "Coupling of terahertz pulses onto a single metal wire waveguide using milled grooves," Opt. Express 13, 7028-7034 (2005)

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  1. R. Mendis and D. Grischkowsky, "Plastic ribbon THz waveguides," J. Appl. Phys. 88, 4449-4451 (2000). [CrossRef]
  2. S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fiber," Appl. Phys. Lett. 76, 1987-1989 (2000). [CrossRef]
  3. G. Gallot, S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Terahertz waveguides," J. Opt. Soc. Am. B 17, 851-863 (2000).
  4. H. Han, H. Park, M. Cho, and J. Kim, "Terahertz pulse propagation in a plastic photonic crystal fiber," Appl. Phys. Lett. 80, 2634-2636 (2002). [CrossRef]
  5. M. Goto, A. Quema, H. Takahashi, S. Ono, and N. Sarukura, "Teflon photonic crystal fiber as terahertz waveguide," Jpn. J. Appl. Phys. 43, L317-L319 (2004). [CrossRef]
  6. R. W. McGowan, G. Gallot, and D. Grischkowsky, "Propagation of ultrawideband short pulses of THz radiation through submillimeter-diameter circular waveguides," Opt. Lett. 24, 1431-1433 (1999).
  7. R. Mendis and D. Grischkowsky, "Undistorted guided-wave propagation of subpicosecond terahertz pulses," Opt. Lett. 26, 846-848 (2001).
  8. S. Coleman and D. Grischkowsky, "A THz transverse electromagnetic mode two dimensional interconnect layer incorporating quasi-optics," Appl. Phys. Lett. 83, 3656-3658 (2003). [CrossRef]
  9. J. A. Harrington, R. George, P. Pedersen, and E. Mueller, "Hollow polycarbonate waveguides with inner Cu coatings for delivery of terahertz radiation," Opt. Express 12, 5263-5268 (2004), <a href= "http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-21-5263.">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-21-5263.</a> [CrossRef]
  10. S. Coleman and D. Grischkowsky, "Parallel plate THz transmitter," Appl. Phys. Lett. 84, 654 (2004). [CrossRef]
  11. H. Cao, R.A. Linke, and A. Nahata, �??Broadband generation of terahertz radiation in a waveguide,�?? Appl. Phys. Lett. 29, 1751-1753 (2004).
  12. R.E. Collin, Field Theory of Guided Waves (New York: IEEE, 1991).
  13. K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004). [CrossRef]
  14. T.-I. Jeon, J. Zhang, and D. Grischkowsky, �??THz Sommerfeld wave propagation on a single metal wire,�?? Appl. Phys. Lett. 86, 161904/1-3 (2005). [CrossRef]
  15. Q. Cao and J. Jahns, "Azimuthally polarized surface plasmons as effective terahertz waveguides," Opt. Express 13, 511-518 (2005), <a href= "http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-2-511.">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-2-511.</a> [CrossRef]
  16. A. Sommerfeld, Electrodynamics (Academic, New York, 1952), pp. 177-190.
  17. G. Goubau, "Surface waves and their application to transmission lines," J. Appl. Phys. 21, 1119-1128 (1950). [CrossRef]
  18. F. Sobel, F.L. Wentworth, and J.C. Wiltse, �??Quasi-optical surface waveguide and other components for the 100-to 300-Gc region,�?? IRE Trans. Microwave Theory Tech. 9, 512-518 (1961). [CrossRef]
  19. G. Goubau, �??Single-conductor surface-wave transmission lines,�?? Proc. IRE 39, 619-623 (1951).
  20. K. Alonso and M.J. Hagmann, �??Comparison of three different methods for coupling of microwave and terahertz signals generated by resonant laser-assisted field emission,�?? J. Vac. Sci. Technol. B 19, 68-71 (2001). [CrossRef]
  21. H. Cao, A. Agrawal, and A. Nahata, "Controlling the transmission resonance lineshape of a single subwavelength aperture," Opt. Express 13, 763-769 (2005), <a href= "http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-3-763">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-3-763</a> [CrossRef]
  22. A. Agrawal, H. Cao, and A. Nahata, "Time-domain analysis of enhanced transmission through a single subwavelength aperture," Opt. Express 13, 3535-3542 (2005), <a href= "http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-9-3535.">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-9-3535.</a> [CrossRef]
  23. A. Agrawal, H. Cao, and A. Nahata, "Excitation and scattering of surface plasmon-polaritons on structured metal films and their application to pulse shaping and enhanced transmission," New J. Phys. (submitted).
  24. R. Gordon, A.G. Brolo, A. McKinnon, A. Rajora, B. Leatham, and K.L. Kavanagh, �??Strong polarization in the optical transmission through elliptical nanohole arrays,�?? Phys. Rev. Lett. 92, 037401 (2004). [CrossRef]

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