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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 10 — Nov. 8, 2013

Broadband photon time-of-flight spectroscopy of pharmaceuticals and highly scattering plastics in the VIS and close NIR spectral ranges

Dmitry Khoptyar, Arman Ahamed Subash, Sören Johansson, Muhammad Saleem, Anders Sparén, Jonas Johansson, and Stefan Andersson-Engels  »View Author Affiliations

Optics Express, Vol. 21, Issue 18, pp. 20941-20953 (2013)

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We present extended spectroscopic analysis of pharmaceutical tablets in the close near infrared spectral range performed using broadband photon time-of-flight (PTOF) absorption and scattering spectra measurements. We show that the absorption spectra can be used to perform evaluation of the chemical composition of pharmaceutical tablets without need for chemo-metric calibration. The spectroscopic analysis was performed using an advanced PTOF spectrometer operating in the 650 to 1400 nm spectral range. By employing temporal stabilization of the system we achieve the high precision of 0.5% required to evaluate the concentration of tablet ingredients. In order to further illustrate the performance of the system, we present the first ever reported broadband evaluation of absorption and scattering spectra from pure and doped Spectralon®.

© 2013 OSA

OCIS Codes
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media
(300.1030) Spectroscopy : Absorption
(300.6190) Spectroscopy : Spectrometers
(300.6250) Spectroscopy : Spectroscopy, condensed matter

ToC Category:

Original Manuscript: May 30, 2013
Revised Manuscript: August 5, 2013
Manuscript Accepted: August 12, 2013
Published: August 30, 2013

Virtual Issues
Vol. 8, Iss. 10 Virtual Journal for Biomedical Optics

Dmitry Khoptyar, Arman Ahamed Subash, Sören Johansson, Muhammad Saleem, Anders Sparén, Jonas Johansson, and Stefan Andersson-Engels, "Broadband photon time-of-flight spectroscopy of pharmaceuticals and highly scattering plastics in the VIS and close NIR spectral ranges," Opt. Express 21, 20941-20953 (2013)

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