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Applied Optics

Applied Optics


  • Vol. 41, Iss. 10 — Apr. 1, 2002
  • pp: 2074–2078

Integrated planar terahertz resonators for femtomolar sensitivity label-free detection of DNA hybridization

Michael Nagel, Peter Haring Bolivar, Martin Brucherseifer, Heinrich Kurz, Anja Bosserhoff, and Reinhard Büttner  »View Author Affiliations

Applied Optics, Vol. 41, Issue 10, pp. 2074-2078 (2002)

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A promising label-free approach for the analysis of genetic material by means of detecting the hybridization of polynucleotides with electromagnetic waves at terahertz (THz) frequencies is presented. Using an integrated waveguide approach, incorporating resonant THz structures as sample carriers and transducers for the analysis of the DNA molecules, we achieve a sensitivity down to femtomolar levels. The approach is demonstrated with time-domain ultrafast techniques based on femtosecond laser pulses for generating and electro-optically detecting broadband THz signals, although the principle can certainly be transferred to other THz technologies.

© 2002 Optical Society of America

OCIS Codes
(170.7160) Medical optics and biotechnology : Ultrafast technology
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.3090) Physical optics : Infrared, far

Original Manuscript: August 2, 2001
Revised Manuscript: October 31, 2001
Published: April 1, 2002

Michael Nagel, Peter Haring Bolivar, Martin Brucherseifer, Heinrich Kurz, Anja Bosserhoff, and Reinhard Büttner, "Integrated planar terahertz resonators for femtomolar sensitivity label-free detection of DNA hybridization," Appl. Opt. 41, 2074-2078 (2002)

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