Enhanced transmission of THz radiation through sub-wavelength, asymmetry metallic hole arrays

Qiu, M. X.; Ruan, S. C.; Su, H.; Wang, C. D.; Zhang, M.; Wang, R. L.; Liang, H. W.
October 2011
Applied Physics Letters;10/10/2011, Vol. 99 Issue 15, p151501
Academic Journal
Strongly enhanced transmission of terahertz radiation pulses through asymmetry rectangular hole arrays with various hole lengths are obtained experimentally. The transmission magnitudes increase and their positions shift to lower frequency with increasing hole length. The maximum transmittance peak is observed for the sample with a hole length of 400 μm. Apparent angle-dependent behavior is observed in the transmission spectra of the 200 × 400 μm2 hole array, which due to the size effect of the rectangular hole along the two orthogonal axes. The resonance frequencies are deduced according to the surface plasmon polaritons modes. Our experiment results closely match the theoretical calculations.


Related Articles

  • Band gaps in the spectra of terahertz surface plasmons on metallic diffraction gratings. Andreev, A. V.; Nazarov, M. M.; Prudnikov, I. R.; Shkurinov, A. P. // JETP Letters;Oct2009, Vol. 90 Issue 3, p177 

    The effect of the appearance of band gaps in the energy spectra of terahertz surface plasmons has been experimentally observed and investigated. The band gaps are formed due to the interference interaction of the surface plasmons excited by pulsed terahertz radiation on metallic diffraction...

  • Guiding Terahertz Waves by a Single Row of Periodic Holes on a Planar Metal Surface. Linfang Shen; Xudong Chen; Xufeng Zhang; Agarwal, Krishna // Plasmonics;Jun2011, Vol. 6 Issue 2, p301 

    In this paper, we show that surface plasmon polaritons (SPPs) can be sustained by a single row of holes periodically drilled on a perfect electric conductor surface. These SPPs can be strongly confined in the transverse plane and they possess an excellent modal shape. In the terahertz regime,...

  • Realization of tightly confined channel plasmon polaritons at low frequencies. Jiang, Tao; Shen, Linfang; Wu, Jin-Jei; Yang, Tzong-Jer; Ruan, Zhichao; Ran, Lixin // Applied Physics Letters;12/26/2011, Vol. 99 Issue 26, p261103 

    Subwavelength guiding of channel plasmon polaritons (CPPs) is realized by a properly structured metallic groove at frequencies far below the plasma frequency of metal. Compared with CPPs at visible frequencies, more versatile physical mechanisms can be introduced in these CPPs by surface...

  • Fabry–Pérot resonators for surface plasmon polaritons probed by cathodoluminescence. Kuttge, M.; Vesseur, E. J. R.; Polman, A. // Applied Physics Letters;5/4/2009, Vol. 94 Issue 18, p183104 

    Surface plasmon polariton Fabry–Pérot resonators were made in single-crystalline gold by focused ion beam milling of two parallel 100 nm deep grooves. The plasmonic cavity modes were spatially and spectrally resolved using cathodoluminescence spectroscopy. Mode numbers up to n=10 were...

  • Measurements of modal symmetry in subwavelength plasmonic slot waveguides. Spasenovic, M.; van Oosten, D.; Verhagen, E.; Kuipers, L. // Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p203109 

    We excite a guided plasmonic mode in slot waveguides of subwavelength width. With a phase- and polarization-sensitive near-field microscope, we measure the electric field of the mode for a range of slot widths from 40 to 120 nm. The field is experimentally found to be antisymmetric across the...

  • Tapered Sommerfeld wire terahertz near-field imaging. Awad, M.; Nagel, M.; Kurz, H. // Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG 

    We explore the potential of tapered Sommerfeld wire waveguides for terahertz near-field imaging. The electric field confinement in the vicinity of the tapered wire tip is exploited to achieve subwavelength resolution. After coupling onto the Sommerfeld wire, terahertz pulses propagate as...

  • Designer spoof surface plasmon structures collimate terahertz laser beams. Nanfang Yu; Qi Jie Wang; Kats, Mikhail A.; Fan, Jonathan A.; Khanna, Suraj P.; Lianhe Li; Davies, A. Giles; Linfield, Edmund H.; Capasso, Federico // Nature Materials;Sep2010, Vol. 9 Issue 9, p730 

    Surface plasmons have found a broad range of applications in photonic devices at visible and near-infrared wavelengths. In contrast, longer-wavelength surface electromagnetic waves, known as Sommerfeld or Zenneck waves, are characterized by poor confinement to surfaces and are therefore...

  • Direct observation of amplified spontaneous emission of surface plasmon polaritons at metal/dielectric interfaces. Yu-Hui Chen; Jiafang Li; Ming-Liang Ren; Ben-Li Wang; Jin-Xin Fu; Si-Yun Liu; Zhi-Yuan Li // Applied Physics Letters;6/27/2011, Vol. 98 Issue 26, p261912 

    We report on direct observation of amplified spontaneous emission (ASE) of surface plasmon polaritons (SPPs) at the interface of a silver film and a gain medium. Based on a typical Kretschmann configuration incorporated with Rhodamine 6G molecules, the growing ASE spectra of SPPs have been...

  • Tamm plasmon polaritons: Slow and spatially compact light. Sasin, M. E.; Seisyan, R. P.; Kalitteevski, M. A.; Brand, S.; Abram, R. A.; Chamberlain, J. M.; Egorov, A. Yu.; Vasil'ev, A. P.; Mikhrin, V. S.; Kavokin, A. V. // Applied Physics Letters;6/23/2008, Vol. 92 Issue 25, p251112 

    We report on the first experimental observation of Tamm plasmon polaritons (TPPs) formed at the interface between a metal and a dielectric Bragg reflector (DBR). In contrast to conventional surface plasmons, TPPs have an in-plane wavevector less than the wavevector of light in vacuum, which...


Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics