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Title: Enhanced Raman scattering assisted by ultrahigh order modes of the double metal cladding waveguide

Distinguished from the usual strategy to enhance the Raman scattering such as creating hot spots in the surface-enhanced Raman scattering, this paper takes a quite different approach based on the double metal cladding waveguide. The target analyte is located in the guiding layer of sub-millimeter scale, where several ultrahigh order modes with high intensity are simultaneously excited via a focused laser beam. The experimental setup is simple, and both simulation and experimental results confirm the enhancement mechanism of these oscillating modes. Other appealing features include the large detection area and the ability to excite guided modes via both polarizations. This scheme can be applied to large molecules detection and readily integrated with other Raman enhancement techniques.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Physics Department, Nantong University, No. 9, Seyuan Road, Nantong, Jiangsu 226007 (China)
  2. Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022 (China)
  3. Department of Instrument Science and Engineering, Shanghai Jiaotong University, No. 800, DongChuan Road, Shanghai 200240 (China)
Publication Date:
OSTI Identifier:
22350996
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAMS; DETECTION; HOT SPOTS; LASER RADIATION; LAYERS; METALS; MOLECULES; POLARIZATION; RAMAN EFFECT; SCATTERING; SIMULATION; SURFACES; WAVEGUIDES