期刊
OPTICS EXPRESS
卷 19, 期 20, 页码 18885-18892出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.018885
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资金
- Air Force Office of Scientific Research, Air Force Research Laboratory/Human Performance Wing
- AFRL [FA8650-08-D-6930]
Stimulated Raman scattering (SRS) is a powerful tool for obtaining background-free chemical information about a material without extrinsic labeling. Background-free spectra are particularly important in the fingerprint region (similar to 800 and 1800 cm(-1)) where peaks are narrow, closely-spaced, and may be in abundance for a particular chemical. We demonstrate a method for obtaining SRS spectra using a single femtosecond laser oscillator. A photonic crystal fiber is used to create a supercontinuum to provide a range of Stokes shifts from similar to 300 to 3400 cm(-1). This SRS approach provides for collection capabilities that are easily modified between obtaining broadband spectra and single-frequency images. (C) 2011 Optical Society of America
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