Liao, Z., Sinjab, F., Gibson, G. , Padgett, M. and Notingher, I. (2016) DMD-based software-configurable spatially-offset Raman spectroscopy for spectral depth-profiling of optically turbid samples. Optics Express, 24(12), pp. 12701-12712. (doi: 10.1364/OE.24.012701)
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Abstract
Spectral depth-profiling of optically turbid samples is of high interest to a broad range of applications. We present a method for measuring spatially-offset Raman spectroscopy (SORS) over a range of length scales by incorporating a digital micro-mirror device (DMD) into a sample-conjugate plane in the detection optical path. The DMD can be arbitrarily programmed to collect/reject light at spatial positions in the 2D sample-conjugate plane, allowing spatially offset Raman measurements. We demonstrate several detection geometries, including annular and simultaneous multi-offset modalities, for both macro- and micro-SORS measurements, all on the same instrument. Compared to other SORS modalities, DMD-based SORS provides more flexibility with only minimal additional experimental complexity for subsurface Raman collection.
Item Type: | Articles |
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Additional Information: | This work was supported by the UK Engineering and Physical Sciences Research Council (grant number EP/L025620/1). |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Gibson, Dr Graham and Padgett, Professor Miles |
Authors: | Liao, Z., Sinjab, F., Gibson, G., Padgett, M., and Notingher, I. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Optics Express |
Publisher: | Optical Society of America |
ISSN: | 1094-4087 |
ISSN (Online): | 1094-4087 |
Copyright Holders: | Copyright © 2016 OSA |
First Published: | First published in Optics Express 24(12): 12701-12702 |
Publisher Policy: | Reproduced under a Creative Commons License |
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