TITLE

Subwavelength plastic wire terahertz time-domain spectroscopy

AUTHOR(S)
Borwen You; Ja-Yu Lu; Tze-An Liu; Jin-Long Peng; Ci-Ling Pan
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p051105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This work demonstrates the feasibility of a terahertz time-domain spectrometer based on a subwavelength-diameter plastic wire (SPW) for sensing applications. The dispersion property of the SPW is experimentally and theoretically studied. The SPW exhibits a low and controllable waveguide dispersion, which can be engineered by changing the core diameter, the core index, and the cladding index of the wire. Two white powders, tryptophan and polyethylene, deposited on the bottom of the wire can be successfully distinguished based on the waveguide dispersion of SPW. The SPW would be a promising candidate for combination with biochips for sensing minute molecules.
ACCESSION #
47929136

 

Related Articles

  • Adiabatic compression of parallel-plate metal waveguides for sensitivity enhancement of waveguide THz time-domain spectroscopy. Zhang, Jiangquan; Grischkowsky, D. // Applied Physics Letters;2/7/2005, Vol. 86 Issue 6, p061109 

    We demonstrate the efficient coupling of THz pulses into and out of an adiabatically compressed parallel-plate metal waveguide. The plate separation of the 63.5-mm long, compressed waveguide was fixed at 103 μm at the entrance and exit ends for efficient coupling, but could be reduced in the...

  • A method to retrieve optical and geometrical characteristics of three layer waveguides from m-lines measurements. Schneider, T.; Leduc, D.; Lupi, C.; Cardin, J.; Gundel, H.; Boisrobert, C. // Journal of Applied Physics;Mar2008, Vol. 103 Issue 6, p063110 

    We consider three layer optical waveguides and present a method to measure simultaneously the refractive index and the thickness of each layer with m-lines spectroscopy. We establish the three layer waveguide modal dispersion equations and describe a numerical method to solve these equations....

  • Site-specific tryptophan fluorescence spectroscopy as a probe of membrane peptide structure and dynamics. Clayton, Andrew A.; Sawyer, William H. // European Biophysics Journal;2002, Vol. 31 Issue 1, p9 

    The fluorescence from tryptophan contains valuable information about the environment local to the indole side-chain. This environment sensitivity coupled with the ability to synthetically or genetically incorporate a single tryptophan residue at specific sites in a polypeptide sequence has...

  • Influence of dispersion on spectral characteristics of GADC optical filters. Nacer, S.; Aissat, A.; Ferdjani, K.; Bensebti, M. // Optical & Quantum Electronics;Jun2006, Vol. 38 Issue 8, p701 

    This text deals with the study of the characteristics of GADC filters by taking into account the dispersion. After having defined the characteristics of the filter, the influence of separation between the guides and filter length on the characteristics of the filter are studied. It is shown that...

  • The Light Spectrum --and What Is Done with It. Busser, John H. // BioScience;Nov1967, Vol. 17 Issue 11, p825 

    The article reports on spectral measurements. Spectral measurements are developed to measure wavelengths on plant's photosynthesis and to evaluate biochemical reactions. They include measurement of light and energy using the units of lux, lumens, joules, watts and nanometers (nm). They are...

  • Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides. Ha, Sangwoo; Sukhorukov, Andrey A.; Lavrinenko, Andrei V.; Shadrivov, Ilya V.; Powell, David A.; Kivshar, Yuri S. // Applied Physics Letters;2/7/2011, Vol. 98 Issue 6, p061909 

    We report the experimental observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides shifted longitudinally by half of modulation period. According to the symmetry analysis, such a coupler supports two electromagnetic modes with exactly matched slow or fast...

  • Mode-beating spectroscopy in a few-mode optical guide.  // Applied Physics Letters;7/19/1993, Vol. 63 Issue 3, p284 

    Observes the mode-beating spectroscopy along the optical waveguide. Examination of spatial beats at the output of the guide; Determination of propagation constants of the guided modes; Measurement of spatial beat frequencies of the optical fiber modes.

  • Optical waveguides for surface spectroscopy: FePO4 thin-film/K+-doped glass composite optical waveguide systems having tapered velocity couplers. Itoh, Kiminori; Madou, Marc // Journal of Applied Physics;6/1/1991, Vol. 69 Issue 11, p7425 

    Presents a study which examined the characteristics of optical waveguides for surface spectroscopy. Effects of water on the attenuation of the guided light; Conditions for adiabatic and nonadiabatic transition of the guided light from the potassium-doped glass OWG; Construction of the miniband...

  • Spectroscopy of tryptophan derivatives in supersonic expansions: Addition of solvent molecules. Sipior, Jeffrey; Sulkes, Mark // Journal of Chemical Physics;5/15/1988, Vol. 88 Issue 10, p6146 

    The addition of solvent molecules, primarily water and some alcohols, to isolated tryptophan derivative molecules has been carried out using supersonic free jet techniques. The derivatives studied include 3-indole acetic acid, 3-indole propionic acid, N-acetyltryptophan ethyl ester, tryptamine,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics