Journal
OPTICS EXPRESS
Volume 20, Issue 2, Pages 835-844Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.000835
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Funding
- National Science Foundation [0721370]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0721370] Funding Source: National Science Foundation
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We report spectrally-resolved chemical imaging based on Raman induced Kerr effect spectroscopy (RIKES). When used with circularly-polarized pump excitation, multiplex RIKES offers the potential for spectrally-resolved imaging free of the nonresonant background that plagues coherent anti-Stokes Raman scattering. RIKES does however have a highly sample-dependent birefringent background that limits its sensitivity and can introduce spectral distortions. We demonstrate that in low birefringence samples multiplex RIKES microscopy offers an enhanced signal-to-noise ratio compared to multiplex stimulated Raman scattering (SRS) when implemented in a high polarization-purity, low frequency chopping scheme. (C)2012 Optical Society of America
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