Efficiency of integrated waveguide probes for the detection of light backscattered from weakly scattering media

Nur Ismail, Fehmi Civitci, Kerstin Wörhoff, René M. De Ridder, Markus Pollnau, Alfred Driessen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A semianalytical model for light collection by integrated waveguide probes is developed by extending previous models used to describe fiber probes. The efficiency of waveguide probes is compared to that of different types of fiber probes for different thicknesses of a weakly scattering sample. The simulation results show that integrated probes have a collection efficiency that is higher than that of small-core fiber probes, and, in the particular case of thin samples, also exceeds the collection efficiency of large-core highly multimode fiber probes. An integrated waveguide probe with one excitation and eight collector waveguides is fabricated and applied to excite and collect luminescence from a ruby rod. The experimental results are in good agreement with the simulation and validate the semianalytical model.

Original languageEnglish (US)
Pages (from-to)935-942
Number of pages8
JournalApplied Optics
Volume50
Issue number6
DOIs
StatePublished - Feb 20 2011
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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