Abstract

An optical detection method is presented that is designed to detect and identify the presence of macromolecular gas species (e.g., organophosphate-based nerve agent simulants) at trace level concentrations. The technique is based on a modified version of conventional laser photoacoustic (PA) spectroscopy, in which optical absorption is typically measured using a single laser source. We demonstrate the ability to simultaneously measure multiple absorption-related parameters that serve as a concentration-independent identifier. Three continuous wave mid-infrared laser sources, operating at 8.68, 9.29, and 10.35 μm, are combined and propagated axially through a specially designed flow through PA cell. Each laser is modulated at a different frequency and the resultant acoustic signal(s) are detected and deconvolved using a PC-based 24 bit dynamic signal acquisition device. Species detection and identification is achieved by tabulating independent ratios of the acoustic response for each laser source. Quantitative absorption measured is verified using a Fourier transform infrared spectrometer. Results show good detection and species separation/identification at moderately low ppm concentrations.

© 2012 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
    [CrossRef]
  2. S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
    [CrossRef]
  3. K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
    [CrossRef]
  4. T. Topfer, K. Petrov, Y. Mine, D. Jundt, R. F. Curl, and F. K. Tittel, Appl. Opt. 36, 8042 (1997).
    [CrossRef]
  5. M. W. Sigrist, Rev. Sci. Instrum. 74, 486 (2003).
    [CrossRef]
  6. K. P. Gurton, M. Felton, R. Dahmani, and D. Ligon, Appl. Opt. 46, 6323 (2007).
    [CrossRef]
  7. K. P. Gurton, R. Dahmani, D. Ligon, and B. Bronk, Appl. Opt. 44, 4096 (2005).
    [CrossRef]
  8. X. T. Lou, G. Somesfalean, B. Chen, Y. G. Zhang, H. S. Wang, Z. G. Zhang, S. H. Wu, and Y. K. Qin, Opt. Lett. 35, 1749 (2010).
    [CrossRef]
  9. A. Rosencwaig, Photoacoustics and Photoacoustic Spectroscopy (John Wiley & Sons, 1990).

2010

2007

2006

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

2005

2003

M. W. Sigrist, Rev. Sci. Instrum. 74, 486 (2003).
[CrossRef]

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

1997

Bronk, B.

Chen, B.

Chen, W.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Chopra, S.

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

Curl, R. F.

Dahmani, R.

Felton, M.

Gothard, N.

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

Gurton, K. P.

Haddon, R.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Houser, E. J.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

Joshi, K. A.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Jundt, D.

Kum, M.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Ligon, D.

Lou, X. T.

McGill, R. A.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

McGuire, K.

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

Mine, Y.

Mulchandani, A.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Novak, J. P.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

Park, D.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

Petrov, K.

Prouza, M.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Qin, Y. K.

Rao, A. M.

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

Rosencwaig, A.

A. Rosencwaig, Photoacoustics and Photoacoustic Spectroscopy (John Wiley & Sons, 1990).

Sigrist, M. W.

M. W. Sigrist, Rev. Sci. Instrum. 74, 486 (2003).
[CrossRef]

Snow, E. S.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

Somesfalean, G.

Stepnowski, J. L.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

Tang, J.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Tittel, F. K.

Topfer, T.

Wang, H. S.

Wang, J.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Wu, S. H.

Zhang, Y. G.

Zhang, Z. G.

Anal. Chem.

K. A. Joshi, M. Prouza, M. Kum, J. Wang, J. Tang, R. Haddon, W. Chen, and A. Mulchandani, Anal. Chem. 78, 331 (2006).
[CrossRef]

Appl. Opt.

Appl. Phys. Lett.

J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003).
[CrossRef]

S. Chopra, K. McGuire, N. Gothard, and A. M. Rao, Appl. Phys. Lett. 83, 2280 (2003).
[CrossRef]

Opt. Lett.

Rev. Sci. Instrum.

M. W. Sigrist, Rev. Sci. Instrum. 74, 486 (2003).
[CrossRef]

Other

A. Rosencwaig, Photoacoustics and Photoacoustic Spectroscopy (John Wiley & Sons, 1990).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1.
Fig. 1.

Schematic of the multiwavelength LPAS experiment.

Fig. 2.
Fig. 2.

Representative measured absorbance spectra for the five nerve agent simulants, where the arrows identify the three laser wavelengths at 8.68, 9.29, and 10.35 μm.

Fig. 3.
Fig. 3.

Ratios of the absorption response for the three wavelengths are shown for the five nerve agent simulants and two volatile organic compounds.

Metrics