naa a22 4500 510817238 CHVBK 20180411083513.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11468-012-9377-x doi (NATIONALLICENCE)springer-10.1007/s11468-012-9377-x Amplification of Surface-Enhanced Raman Scattering in Photonic Crystal Fiber Using Offset Launch Method [Elektronische Daten] [Yating Zhang, Derrick Yong, Xia Yu, Li Xia, Deming Liu, Ying Zhang] In this paper, we report the amplification effect of surface-enhanced Raman scattering (SERS) in a solid-core photonic crystal fiber. Gold nanoparticles (AuNPs) are self-assembled on the inner walls of the cladding air holes through a multilayered deposition procedure. Offset launch method is for the first time employed to introduce extra enhancement in the intensity of SERS signals, as compared to the conventional core launch method. A theoretical analysis on modal field distribution for both launching conditions is carried out to account for such improvement. It shows that by adjusting the launching position of laser beam from the solid fiber core to an air hole in the cladding, overlap of the excited mode with AuNPs has been increased significantly. The SERS probe is demonstrated to achieve a detection limit as low as 10−7M in concentration, which shows a competitive performance for molecule analysis. Springer Science+Business Media, LLC, 2012 Offset launch nationallicence Photonic crystal fiber nationallicence Surface-enhanced Raman scattering nationallicence Evanescent field nationallicence Zhang Yating Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut Yong Derrick Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut Yu Xia Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut Xia Li Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut Liu Deming Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut Zhang Ying Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 209-215 1557-1955 8:2<209 2013 8 11468 https://doi.org/10.1007/s11468-012-9377-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-012-9377-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Yating Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Yong Derrick Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut NATIONALLICENCE 700 1- Yu Xia Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut NATIONALLICENCE 700 1- Xia Li Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Liu Deming Wuhan National Laboratory for Optoelectronics, No. 1037, Luoyu Road, 430074, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Zhang Ying Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore, Singapore aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 209-215 1557-1955 8:2<209 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer