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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 9 — Sep. 8, 2008

Cavity-enhanced on-chip absorption spectroscopy using microring resonators

Arthur Nitkowski, Long Chen, and Michal Lipson  »View Author Affiliations


Optics Express, Vol. 16, Issue 16, pp. 11930-11936 (2008)
http://dx.doi.org/10.1364/OE.16.011930


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Abstract

We demonstrate on-chip laser absorption spectroscopy using silicon microring resonators integrated with PDMS microfluidic channels. A 100 μm radius microring resonator with Q>100,000 is used to enhance the interaction length between evanescent light and a cladding liquid. We measure absorption spectra of less than 2 nL of N-methylaniline from 1460 nm to 1610 nm with 1 nm resolution and effective free space path lengths up to 5 mm. This work can help realize a completely on-chip spectroscopy device for lab-on-a-chip applications.

© 2008 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(300.1030) Spectroscopy : Absorption

ToC Category:
Spectroscopy

History
Original Manuscript: May 21, 2008
Revised Manuscript: July 17, 2008
Manuscript Accepted: July 18, 2008
Published: July 25, 2008

Virtual Issues
Vol. 3, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Arthur Nitkowski, Long Chen, and Michal Lipson, "Cavity-enhanced on-chip absorption spectroscopy using microring resonators," Opt. Express 16, 11930-11936 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-16-11930


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