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Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 6 — Jun. 27, 2013

Demonstration of a miniature all-optical photoacoustic spectrometer based on ferrule-top technology

Grzegorz Gruca, Kier Heeck, Jan Rector, and Davide Iannuzzi  »View Author Affiliations


Optics Letters, Vol. 38, Issue 10, pp. 1672-1674 (2013)
http://dx.doi.org/10.1364/OL.38.001672


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Abstract

We present a miniaturized photoacoustic (PA) spectrometer obtained by carving a micromachined flexural pressure transducer directly at the top of a glass ferrule. The ferrule is equipped with two optical fibers, one for laser excitation of the gas and one for interferometric readout of the transducer. To demonstrate the working principle and assess the sensitivity of the device, we performed a set of measurements of C 2 H 2 traces in an Ar buffer atmosphere. The data acquired show that our ferrule-top scheme allows one to increase the minimum detectable concentration by more than one order of magnitude with respect to the other miniaturized PA spectrometers reported in the literature, while decreasing the integration time by a factor of 10.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(230.4685) Optical devices : Optical microelectromechanical devices

ToC Category:
Spectroscopy

History
Original Manuscript: March 21, 2013
Manuscript Accepted: April 15, 2013
Published: May 10, 2013

Virtual Issues
Vol. 8, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Grzegorz Gruca, Kier Heeck, Jan Rector, and Davide Iannuzzi, "Demonstration of a miniature all-optical photoacoustic spectrometer based on ferrule-top technology," Opt. Lett. 38, 1672-1674 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-38-10-1672


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