| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Spectra of spontaneous Raman scattering in taper-drawn micro/nano-fibers |
| Yingxin Xu(徐颖鑫)3, Liang Cui(崔亮)1, Xiaoying Li(李小英)1, Cheng Guo(郭骋)1, Yuhang Li(李宇航)2, Zhongyang Xu(徐忠扬)2, Lijun Wang(王力军)2, Wei Fang(方伟)3 |
1. College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Key Laboratory of Optoelectronics Information Technology of Ministry of Education, Tianjin 300072, China;
2. Joint Institute for Measurement Science, Tsinghua University, Beijing 100084, China;
3. Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China |
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Abstract We study the spontaneous Raman scattering (RS) in taper-drawn micro/nano-fibers (MNFs) by employing the photon counting technique. The spectra of RS in five MNFs, which are fabricated by using different heating flames (hydrogen flame or butane flame) and with different diameters, are measured within a frequency shift range of 1435 cm-1-3200 cm-1. From the measured spectra, we observe the RS peaks originated from silica and a unique RS peak with a frequency shift of ~2905 cm-1 (~87.2 THz). Unlike the former ones, the latter one is not observable in conventional optical fibers. Furthermore, the unique peak becomes obvious and starts to rapidly increase with the decrease of the diameter of MNFs when the diameter is smaller than 2 μm, and the intensity of the unique peak significantly depends on the heating flame used in the fabricating process. Our investigation is useful for the entanglement generation or optical sensing using taper-drawn MNFs.
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Received: 05 July 2016
Revised: 29 August 2016
Accepted manuscript online:
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PACS:
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42.65.-k
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(Nonlinear optics)
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42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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78.30.-j
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(Infrared and Raman spectra)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11304222 and 11527808) and the State Key Development Program for Basic Research of China (Grant No. 2014CB340103). |
Corresponding Authors:
Liang Cui, Xiaoying Li
E-mail: lcui@tju.edu.cn;xiaoyingli@tju.edu.cn
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Cite this article:
Yingxin Xu(徐颖鑫), Liang Cui(崔亮), Xiaoying Li(李小英), Cheng Guo(郭骋), Yuhang Li(李宇航), Zhongyang Xu(徐忠扬), Lijun Wang(王力军), Wei Fang(方伟) Spectra of spontaneous Raman scattering in taper-drawn micro/nano-fibers 2016 Chin. Phys. B 25 124205
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