Abstract

We report a simple method of creating terahertz waves by applying the photo-Dember effect in a (100)-oriented InAs film coated onto the 45-degree wedged-end facet of an optical fiber. The terahertz waves are generated by infrared pulses guided through the optical fiber which is nearly in contact with a sample and then measured by a conventional photo-conductive antenna detector. Using this alignment-free terahertz source, we performed proof-of-principle experiments of terahertz time-domain spectroscopy and near-field terahertz microscopy. We obtained a bandwidth of 2 THz and 180-µm spatial resolution. Using this method, the THz imaging resolution is expected to be reduced to the size of the optical fiber core. Applications of this device can be extended to sub-wavelength terahertz spectroscopic imaging, miniaturized terahertz system design, and remote sensing.

© 2010 Optical Society of America

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  1. M. Tonouchi, "Cutting-edge terahertz technology," Nat. Photonics 1, 97-105 (2007).
    [CrossRef]
  2. J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
    [CrossRef]
  3. H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
    [CrossRef] [PubMed]
  4. X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
    [CrossRef]
  5. Q. Chen, Z. Jiang, G. X. Xu, and X.-C. Zhang, "Near-field terahertz imaging with a dynamic aperture," Opt. Lett. 25, 1122-1124 (2000).
    [CrossRef]
  6. H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
    [CrossRef]
  7. A. J. L. Adam, N. C. J. Van der Valk, and P. C. M. Planken, "Measurement and calculation of the near field of a terahertz apertureless scanning optical microscope," J. Opt. Soc. Am. B 24, 1080-1090 (2007).
    [CrossRef]
  8. R. Lecaque, S. Gresillon, and C. Boccara, "THz emission Microscopy with sub-wavelength broadband source," Opt. Express 16, 4731-4738 (2008).
    [CrossRef] [PubMed]
  9. M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
    [CrossRef]
  10. J. Bromage, S. Radic, G. P. Agrawal, C. R. Stroud, P. M. Fauchet, and R. Sobolewski, "Spatiotemporal shaping of half-cycle terahertz pulses by diffraction through conductive apertures of finite thickness," J. Opt. Soc. Am. B 15, 1399-1405 (1988).
    [CrossRef]
  11. N. C. J. van der Valk and P. C. M. Planken, "Electro-optic detection of subwavelength terahertz spot sizes in the near field of a metal tip," Appl. Phys. Lett. 81, 1558-1560 (2002).
    [CrossRef]
  12. M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
    [CrossRef]
  13. K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004).
    [CrossRef] [PubMed]
  14. A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
    [CrossRef]
  15. S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
    [CrossRef]
  16. L.-J. Chen, H.-W. Chen, T.-F. Kao, J.-Y. Lu, and C.-K. Sun, "Low-loss subwavelength plastic fiber for terahertz waveguiding," Opt. Lett. 31, 308-310 (2006).
    [CrossRef] [PubMed]
  17. T.-I. Jeon, and D. Grischkowsky, "Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines," Appl. Phys. Lett. 85, 6092-6094 (2004).
    [CrossRef]
  18. M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
    [CrossRef]
  19. S. A. Crooker, "Fiber-coupled antennas for ultrafast coherent terahertz spectroscopy in low temperatures and high magnetic fields," Rev. Sci. Instrum. 73, 3258-3264 (2002).
    [CrossRef]
  20. K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
    [CrossRef]
  21. R. Inoue, K. Takayama, and M. Tonouchi, "Angluar dependence of terahertz emission from semiconductor surfaces photoexcited by femtosecond optical pulses," J. Opt. Soc. Am. B 26A14-A22 (2009).
    [CrossRef]
  22. P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
    [CrossRef]
  23. R. Adomavi ius, A. Urbanowicz, G. Molis, A. Krotkus, and E. Satkovskis, "Terahertz emission from p-lnAs due to the instantaneous polarization," Appl. Phys. Lett. 85, 2463-2465 (2004).
    [CrossRef]

2010 (1)

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

2009 (4)

M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
[CrossRef]

M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
[CrossRef]

M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
[CrossRef]

R. Inoue, K. Takayama, and M. Tonouchi, "Angluar dependence of terahertz emission from semiconductor surfaces photoexcited by femtosecond optical pulses," J. Opt. Soc. Am. B 26A14-A22 (2009).
[CrossRef]

2008 (1)

2007 (2)

2006 (4)

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

L.-J. Chen, H.-W. Chen, T.-F. Kao, J.-Y. Lu, and C.-K. Sun, "Low-loss subwavelength plastic fiber for terahertz waveguiding," Opt. Lett. 31, 308-310 (2006).
[CrossRef] [PubMed]

2005 (1)

A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
[CrossRef]

2004 (3)

R. Adomavi ius, A. Urbanowicz, G. Molis, A. Krotkus, and E. Satkovskis, "Terahertz emission from p-lnAs due to the instantaneous polarization," Appl. Phys. Lett. 85, 2463-2465 (2004).
[CrossRef]

K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004).
[CrossRef] [PubMed]

T.-I. Jeon, and D. Grischkowsky, "Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines," Appl. Phys. Lett. 85, 6092-6094 (2004).
[CrossRef]

2003 (1)

H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
[CrossRef]

2002 (3)

N. C. J. van der Valk and P. C. M. Planken, "Electro-optic detection of subwavelength terahertz spot sizes in the near field of a metal tip," Appl. Phys. Lett. 81, 1558-1560 (2002).
[CrossRef]

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

S. A. Crooker, "Fiber-coupled antennas for ultrafast coherent terahertz spectroscopy in low temperatures and high magnetic fields," Rev. Sci. Instrum. 73, 3258-3264 (2002).
[CrossRef]

2000 (2)

S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
[CrossRef]

Q. Chen, Z. Jiang, G. X. Xu, and X.-C. Zhang, "Near-field terahertz imaging with a dynamic aperture," Opt. Lett. 25, 1122-1124 (2000).
[CrossRef]

1988 (1)

Adam, A. J. L.

Agrawal, G. P.

Averitt, R. D.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Awad, M.

M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
[CrossRef]

Belyanin, A. A.

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

Bingham, A.

A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
[CrossRef]

Boccara, C.

Bromage, J.

Chen, H. T.

H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
[CrossRef]

Chen, H.-T.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Chen, H.-W.

Chen, L.-J.

Chen, Q.

Cho, G. C.

H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
[CrossRef]

Crooker, S. A.

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

S. A. Crooker, "Fiber-coupled antennas for ultrafast coherent terahertz spectroscopy in low temperatures and high magnetic fields," Rev. Sci. Instrum. 73, 3258-3264 (2002).
[CrossRef]

Fauchet, P. M.

Gossard, A. C.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Gresillon, S.

Grischkowsky, D.

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
[CrossRef]

T.-I. Jeon, and D. Grischkowsky, "Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines," Appl. Phys. Lett. 85, 6092-6094 (2004).
[CrossRef]

S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
[CrossRef]

Gu, P.

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

Harsha, S. S.

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

Inoue, R.

Jamison, S. P.

S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
[CrossRef]

Jeon, T.-I.

T.-I. Jeon, and D. Grischkowsky, "Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines," Appl. Phys. Lett. 85, 6092-6094 (2004).
[CrossRef]

Jiang, Z.

Kao, T.-F.

Kersting, R.

H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
[CrossRef]

Kono, J.

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

Kono, S.

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

Kurz, H.

M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
[CrossRef]

M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
[CrossRef]

Laman, N.

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

Lecaque, R.

Liu, K.

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

Lu, J.-Y.

Mbonye, M.

M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
[CrossRef]

McGowan, R. W.

S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
[CrossRef]

Melinger, J. S.

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

Mendis, R.

M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
[CrossRef]

Mittleman, D. M.

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
[CrossRef]

K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004).
[CrossRef] [PubMed]

Nagel, M.

M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
[CrossRef]

M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
[CrossRef]

Padilla, W. J.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Planken, P. C. M.

A. J. L. Adam, N. C. J. Van der Valk, and P. C. M. Planken, "Measurement and calculation of the near field of a terahertz apertureless scanning optical microscope," J. Opt. Soc. Am. B 24, 1080-1090 (2007).
[CrossRef]

N. C. J. van der Valk and P. C. M. Planken, "Electro-optic detection of subwavelength terahertz spot sizes in the near field of a metal tip," Appl. Phys. Lett. 81, 1558-1560 (2002).
[CrossRef]

Radic, S.

Sakai, K.

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

Sobolewski, R.

Stroud, C. R.

Sun, C.-K.

Takayama, K.

Tani, M.

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

Taylor, A. J.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Tonouchi, M.

Van der Valk, N. C. J.

A. J. L. Adam, N. C. J. Van der Valk, and P. C. M. Planken, "Measurement and calculation of the near field of a terahertz apertureless scanning optical microscope," J. Opt. Soc. Am. B 24, 1080-1090 (2007).
[CrossRef]

N. C. J. van der Valk and P. C. M. Planken, "Electro-optic detection of subwavelength terahertz spot sizes in the near field of a metal tip," Appl. Phys. Lett. 81, 1558-1560 (2002).
[CrossRef]

Wachter, M.

M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
[CrossRef]

Wang, K.

K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004).
[CrossRef] [PubMed]

Wang, X.

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

Xu, G. X.

Xu, J.

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

Yuan, T.

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

Zhang, X.-C.

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

Q. Chen, Z. Jiang, G. X. Xu, and X.-C. Zhang, "Near-field terahertz imaging with a dynamic aperture," Opt. Lett. 25, 1122-1124 (2000).
[CrossRef]

Zhao, Y.

A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
[CrossRef]

Zide, J. M. O.

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

Appl. Phys. Lett. (10)

J. S. Melinger, N. Laman, S. S. Harsha, and D. Grischkowsky, "Line narrowing of THz vibrational modes for organic thin films within a parallel plate waveguide," Appl. Phys. Lett. 89, 251110 (2006).
[CrossRef]

H. T. Chen, R. Kersting, and G. C. Cho, "Terahertz imaging with nanometer resolution," Appl. Phys. Lett. 83, 3009-3011 (2003).
[CrossRef]

M. Wachter, M. Nagel, and H. Kurz, "Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution," Appl. Phys. Lett. 95, 041112 (2009).
[CrossRef]

N. C. J. van der Valk and P. C. M. Planken, "Electro-optic detection of subwavelength terahertz spot sizes in the near field of a metal tip," Appl. Phys. Lett. 81, 1558-1560 (2002).
[CrossRef]

M. Awad, M. Nagel, and H. Kurz, "Tapered Sommerfeld wire terahertz near-field imaging," Appl. Phys. Lett. 94, 051107 (2009).
[CrossRef]

A. Bingham, Y. Zhao, and D. Grischkowsky, "THz parallel plate photonic waveguides," Appl. Phys. Lett. 87, 051101 (2005).
[CrossRef]

S. P. Jamison, R. W. McGowan, and D. Grischkowsky, "Single-mode waveguide propagation and reshaping of sub-ps terahertz pulses in sapphire fibers," Appl. Phys. Lett. 76, 1987-1989 (2000).
[CrossRef]

T.-I. Jeon, and D. Grischkowsky, "Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines," Appl. Phys. Lett. 85, 6092-6094 (2004).
[CrossRef]

M. Mbonye, R. Mendis, and D. M. Mittleman, "A terahertz two-wire waveguide with low bending loss," Appl. Phys. Lett. 95, 233506 (2009).
[CrossRef]

R. Adomavi ius, A. Urbanowicz, G. Molis, A. Krotkus, and E. Satkovskis, "Terahertz emission from p-lnAs due to the instantaneous polarization," Appl. Phys. Lett. 85, 2463-2465 (2004).
[CrossRef]

J. Appl. Phys. (1)

P. Gu, M. Tani, S. Kono, K. Sakai, and X.-C. Zhang, "Study of terahertz radiation from InAs and InSb," J. Appl. Phys. 91, 5533-5537 (2002).
[CrossRef]

J. Opt. Soc. Am. B (3)

Nat. Photonics (1)

M. Tonouchi, "Cutting-edge terahertz technology," Nat. Photonics 1, 97-105 (2007).
[CrossRef]

Nat. Physics (1)

X. Wang, A. A. Belyanin, S. A. Crooker, D. M. Mittleman, and J. Kono, "Interference-induced terahertz transparency in a semiconductor magneto-plasma," Nat. Physics 6, 126-130 (2010).
[CrossRef]

Nature (2)

H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, "Active terahertz metamaterial devices," Nature 444, 597-600 (2006).
[CrossRef] [PubMed]

K. Wang and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature 432, 376-379 (2004).
[CrossRef] [PubMed]

Opt. Express (1)

Opt. Lett. (2)

Phys. Rev. B (1)

K. Liu, J. Xu, T. Yuan, and X.-C. Zhang, "Terahertz radiation from InAs induced by carrier diffusion and drift," Phys. Rev. B 73, 155330 (2006).
[CrossRef]

Rev. Sci. Instrum. (1)

S. A. Crooker, "Fiber-coupled antennas for ultrafast coherent terahertz spectroscopy in low temperatures and high magnetic fields," Rev. Sci. Instrum. 73, 3258-3264 (2002).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

(Color online) (a) Setup photograph of the THz optical fiber tip in a near-field microscope application. (b) Schematic of the optical fiber THz emitter. (c) InAs film fabrication layout. (d) Measured THz waveform from the optical-fiber THz emitter. (e) The amplitude spectrum of the THz pulse shown in (d).

Fig. 2.
Fig. 2.

(Color online) (a) Image of measured horizontal components of the THz field emitted from the fiber tip as a function of rotation angle and time. (b) The sinusoidal angle dependence around the optical axis at three different times (dashed line) shown in (a).

Fig. 3.
Fig. 3.

(Color online) (a) Optical power dependence of the measured THz pulses from the devised optical-fiber THz emitter (star) and from a bare InAs film attached to a 500-µm-thick sapphire substrate (solid line). (b) Beam diameter dependence on the THz power from the bare InAs film.

Fig. 4.
Fig. 4.

(Color online) (a) A knife-edge THz image using an 18-µm-thick aluminum foil.(b) The lateral profile taken from a line as drawn in (a). (c) Optically magnified photo of the metal sieve and an overall view (inset). (d) THz image of (c) superimposed on an optical microscope image.

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