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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4796–4799

3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases

Ralf Bauer, George Stewart, Walter Johnstone, Euan Boyd, and Michael Lengden  »View Author Affiliations


Optics Letters, Vol. 39, Issue 16, pp. 4796-4799 (2014)
http://dx.doi.org/10.1364/OL.39.004796


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Abstract

A new methodology for the development of miniature photoacoustic trace gas sensors using 3D printing is presented. A near-infrared distributed feedback (DFB) laser is used together with a polymer-based gas cell, off-the-shelf fiber optic collimators, and a microelectromechanical system (MEMS) microphone to measure acetylene at 1532.83 nm. The resonance behavior of the miniature gas cell is analyzed using a theoretical and experimental approach, with a measured resonance frequency of 15.25 kHz and a Q-factor of 15. A minimum normalized noise equivalent absorption of 4.5×109Wcm1Hz1/2 is shown together with a 3σ detection limit of 750 parts per billion (ppb) for signal averaging times of 35 s. The fiber-coupled delivery and miniature cost-effective cell design allows for use in multipoint and remote detection applications.

© 2014 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6430) Spectroscopy : Spectroscopy, photothermal
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: June 12, 2014
Manuscript Accepted: July 13, 2014
Published: August 8, 2014

Citation
Ralf Bauer, George Stewart, Walter Johnstone, Euan Boyd, and Michael Lengden, "3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases," Opt. Lett. 39, 4796-4799 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-16-4796

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