Surface-Enhanced Raman-Scattering Fiber Probe Fabricated by Femtosecond Laser
We report what we believe to be a new method to fabricate surface enhanced Raman scattering (SERS) fiber probe by direct femtosecond laser micromachining. Direct femtosecond laser ablations resulted in nanostructures on the cleaved endface of a multimode optical fiber with a 105/125 µm core/cladding diameter. The laser-ablated fiber endface was SERS activated by silver chemical plating. High-quality SERS signal was detected using Rhodamine 6G molecules (10ˉ⁸ - 10ˉ⁶ M solutions) via back excitation with the fiber length of up to 1 m. The fiber SERS probe was compared with a planar fused silica substrate at a front excitation. The long lead-in fiber length and the backexcitation/collection setup make the SERS probe promising for remote sensing applications. © 2009 Optical Society of America.
X. Lan et al., "Surface-Enhanced Raman-Scattering Fiber Probe Fabricated by Femtosecond Laser," Optics Letters, Optical Society of America, Jan 2009.
The definitive version is available at http://dx.doi.org/10.1364/OL.34.002285
Mechanical and Aerospace Engineering
Electrical and Computer Engineering
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© 2009 Optical Society of America, All rights reserved.