Effects of the cone angle on the SERS detection sensitivity of tapered fiber probes

doi:10.1364/OE.471597

	Effects of the cone angle on the SERS detection sensitivity of tapered fiber probes
	Qin, Y. A. N. Y. A. N.1,5,6; Huang, R. U. I. D. O. N. G.1,5,7; Lu, F. E. N. G. Y. A.2; Tang, H. A. I. B. I. N.3,4,6; Yao, B. O.1,5; Mao, Q. I. N. G. H. E.1,5,6,7
刊名	OPTICS EXPRESS
	2022-10-10
卷号	30
ISSN号	1094-4087
DOI	10.1364/OE.471597
通讯作者	Mao, Q. I. N. G. H. E.(mqinghe@aiofm.ac.cn)
英文摘要	In this paper, we investigate the effects of taper angle on the SERS detection sensitivity using tapered fiber probes with single-layer uniform gold spherical nanoparticles (GSNs). We show that the photothermal damage caused by excessive excitation laser power is the main factor that restricts the improvement of detection sensitivity of tapered fiber probes. Only when the cone angle is appropriate can a balance be achieved between increasing the excitation laser power and suppression of the transmission and scattering losses of the nanoparticles on the tapered fiber surface, thereby obtaining the best SERS detection sensitivity. Furthermore, the optimal cone angle depends on the complex refractive index of the equivalent composite dielectric (ECD) layer containing GSNs. For three SERS fiber probes with different ECD layers, the optimal cone angles measured are between 11-13 degrees. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
资助项目	Major Science and Technology Projects in Anhui Province ; Strategic Priority Research Program of the Chinese Academy of Sciences ; [201903a07020021] ; [XDB21010300]
WOS关键词	ENHANCED RAMAN-SCATTERING ; GOLD NANOPARTICLES ; CHEMICAL-ANALYSIS ; OPTICAL-FIBER ; SURFACE ; SPECTROSCOPY ; SENSORS
WOS研究方向	Optics
语种	英语
出版者	Optica Publishing Group
WOS记录号	WOS:000876702100001
资助机构	Major Science and Technology Projects in Anhui Province ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129995]
专题	中国科学院合肥物质科学研究院
通讯作者	Mao, Q. I. N. G. H. E.
作者单位	1.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Anhui, Peoples R China 2.Anhui Med Univ, Sch Biomed Engn, Hefei 230032, Peoples R China 3.Chinese Acad Sci, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, HFIPS, Hefei 230031, Anhui, Peoples R China 5.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China 6.Univ Sci & Technol China, Hefei 230026, Peoples R China 7.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Qin, Y. A. N. Y. A. N.,Huang, R. U. I. D. O. N. G.,Lu, F. E. N. G. Y. A.,et al. Effects of the cone angle on the SERS detection sensitivity of tapered fiber probes[J]. OPTICS EXPRESS,2022,30.
APA	Qin, Y. A. N. Y. A. N.,Huang, R. U. I. D. O. N. G.,Lu, F. E. N. G. Y. A.,Tang, H. A. I. B. I. N.,Yao, B. O.,&Mao, Q. I. N. G. H. E..(2022).Effects of the cone angle on the SERS detection sensitivity of tapered fiber probes.OPTICS EXPRESS,30.
MLA	Qin, Y. A. N. Y. A. N.,et al."Effects of the cone angle on the SERS detection sensitivity of tapered fiber probes".OPTICS EXPRESS 30(2022).