TITLE

Waveguide mode imaging and dispersion analysis with terahertz near-field microscopy

AUTHOR(S)
Mitrofanov, Oleg; Tan, Thomas; Mark, Paul R.; Bowden, Bradley; Harrington, James A.
PUB. DATE
April 2009
SOURCE
Applied Physics Letters;4/27/2009, Vol. 94 Issue 17, p171104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Propagation of terahertz waves in hollow metallic waveguides depends on the waveguide mode. Near-field scanning probe terahertz microscopy is applied to identify the mode structure and composition in dielectric-lined hollow metallic waveguides. Spatial profiles, relative amplitudes, and group velocities of three main waveguide modes are experimentally measured and matched to the HE11, HE12, and TE11 modes. The combination of near-field microscopy with terahertz time-resolved spectroscopy opens the possibility of waveguide mode characterization in the terahertz band.
ACCESSION #
38712340

 

Related Articles

  • Nano Spatial Resolution with 60 GHz Near-Field Scanning Millimeter-Wave Microscope. Kim, Myungsik; Kim, Hyun; Kim, Jooyoung; Friedman, Barry; Lee, Kiejin // AIP Conference Proceedings;2003, Vol. 657 Issue 1, p449 

    We report an imaging technique for various samples using a near-field scanning millimeter-wave microscope (NSMM) by using a standard tunable rectangular waveguide at operation frequency f = 60GHz. By monitoring the change of Q-factor in the near field zone as the probe scanned over the object,...

  • Time-resolved optical waveguide study of the reorientation in a nematic liquid crystal under... Mitsuishi, M.; Ito, S. // Journal of Applied Physics;2/1/1997, Vol. 81 Issue 3, p1142 

    Studies the reorientation behavior of nematic liquid crystal molecules induced by an electric pulsed field through time-resolved optical waveguide spectroscopy (TROWS). Time evolution of the waveguide mode patterns; Transient dielectric tensor profile in the 4'-pentyl-4-cyanobiphenyl layer;...

  • Experimental demonstration of Bloch mode parity change in photonic crystal waveguide. Cluzel, B.; Gérard, D.; Picard, E.; Charvolin, T.; Calvo, V.; Hadji, E.; de Fornel, F. // Applied Physics Letters;10/4/2004, Vol. 85 Issue 14, p2682 

    We experimentally show coupling between two photonic crystal waveguide Bloch modes having a different parity. A monomode ridge waveguide etched in a silicon-on-insulator substrate and connecting to the photonic crystal waveguide allows us to excite the even Bloch mode. Transmission measurements,...

  • Near-field photocurrent imaging of the optical mode profiles of semiconductor laser diodes. Guenther, T.; Malyarchuk, V.; Tomm, J. W.; Mu¨ller, R.; Lienau, C.; Luft, J. // Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1463 

    The potential of near-field photocurrent spectroscopy for direct imaging of mode profiles of submicron-sized waveguides in optoelectronic devices is demonstrated. The technique combines the submicron spatial resolution of near-field optics with tunable laser excitation, allowing for selective...

  • Near-field modal microscopy of subwavelength light confinement in multimode silicon slot waveguides. Foubert, Kevin; Lalouat, Loïc; Cluzel, Benoît; Picard, Emmanuel; Peyrade, David; Delamadeleine, Eric; de Fornel, Frédérique; Hadji, Emmanuel // Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p251103 

    Silicon-on-insulator slot waveguides are studied by scanning near-field optical microscopy. Images of the standing wave pattern were established experimentally and compared with numerical simulations. Fourier analysis along the propagation direction reveals noticeable frequencies both on the...

  • Nanometer-sized optical waveguides fabricated by anodic oxidation using a scanning near-field optical microscope. Onuki, T.; Tokizaki, T.; Watanabe, Y.; Tsuchiya, T.; Tani, T. // Applied Physics Letters;6/17/2002, Vol. 80 Issue 24, p4629 

    We have fabricated an optical waveguide with a subwavelength cross section that propagates light. A metal-oxide core is partially embedded into a metal clad by anodic oxidation using the probe tip of a scanning near-field optical microscope (SNOM). Then, using the SNOM in transmission mode we...

  • Time-resolved White-light Interferometry for Ultrafast Metrology. Mingareev, I.; Wortmann, D.; Brand, A.; Horn, A. // AIP Conference Proceedings;10/8/2010, Vol. 1278 Issue 1, p891 

    The material modification in the volume of transparent dielectrics using tightly focused fs-laser radiation is an important topic for many research groups all over the world. A wide range of applications like the writing of waveguides, micro-structuring by material modification and subsequent...

  • Acoustic Pulse in a Wall-less Waveguiding. Pyatnitsky, L. N. // Technical Physics Letters;Mar2002, Vol. 28 Issue 3, p246 

    The reflection of an acoustic wave from a concave cone-shaped surface leads to the formation of an intense wave propagating along the symmetry axis, with a flat front and a radial profile described by a zero-order (n = 0) Bessel function of the first kind. The wave front profile retains the...

  • Properties of a dielectric probe for scanning near-field millimeter-wave microscopy. Kume, Eiji; Sakai, Shigeki // Journal of Applied Physics;3/1/2006, Vol. 99 Issue 5, p056105 

    The characteristics of a dielectric probe for scanning near-field millimeter wave microscopy are presented in this paper. The dielectric probe was fabricated from Teflon and shaped like a cone. The beam profile of the millimeter-wave radiated from the tip of the Teflon probe was measured by...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics