Abstract

Antiresonance-guiding hollow-core fibers are shown to enable highly sensitive detection of cell proliferation probes using Raman scattering within the region where the cellular Raman activity is minimal. We demonstrate that such fibers can substantially reduce the level of the background compared to standard index-guiding optical fibers, thus radically improving the sensitivity of Raman detection of DNA synthesis in cells and offering a powerful tool for fiber-based live-cell imaging.

© 2012 Optical Society of America

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