Open Access
1 February 2011 Comparison of the sensitivity and image contrast in spontaneous Raman and coherent Stokes Raman scattering microscopy of geometry-controlled samples
Hyunmin Kim, Chris A. Michaels, Garnett W. Bryant, Stephan J. Stranick
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Abstract
We experimentally compare the performance and image contrast of spontaneous Raman and coherent Stokes Raman scattering microscopy. We demonstrate the differences between these techniques on a series of geometry-controlled samples that range in complexity from a point (array of tips) to one-dimensional (line grating) and, lastly, two-dimensional (checkereboard) microstructure. Through the use of this sample series, a comparison of the focal volume, achievable signal-to-noise, and resulting image contrast is made. The results demonstrate the effciency and spatial resolution attainable in coherent Raman microscopy relative to spontaneous Raman microscopy. Additionally, we detail potential complications in the interpretation of coherent Raman images of sample fine structure, where contrast is no longer based solely on oscillator concentration but can be influenced by sample microstructure.
©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)
Hyunmin Kim, Chris A. Michaels, Garnett W. Bryant, and Stephan J. Stranick "Comparison of the sensitivity and image contrast in spontaneous Raman and coherent Stokes Raman scattering microscopy of geometry-controlled samples," Journal of Biomedical Optics 16(2), 021107 (1 February 2011). https://doi.org/10.1117/1.3533310
Published: 1 February 2011
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Cited by 7 scholarly publications.
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KEYWORDS
Microscopy

Raman scattering

Raman spectroscopy

Silicon

Polarization

Oscillators

Scattering

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