Advertisement

Plasmonics

, Volume 6, Issue 2, pp 219–226 | Cite as

Experimental Study of Metallic Elliptical Nano-Pinhole Structure-Based Plasmonic Lenses

  • Yiwei Zhang
  • Yongqi Fu
  • Yu Liu
  • Xiuli Zhou
Article

Abstract

An elliptical nano-pinhole structure-based plasmonic lens was designed and investigated experimentally by means of focused ion beam nanofabrication, atomic force microscope imaging, and scanning near-field optical microscope (NSOM). Two scan modes, tip scan and sample scan, were employed, respectively, in our NSOM measurements. Both the scan modes have their characteristics while probing the plasmonic lenses. Our experimental results demonstrated that the lens can realize subwavelength focusing with elongated depth of focus. This type of lens can be used in micro-systems such as micro-opto-electrical–mechanical systems for biosensing, subwavelength imaging, and data storage.

Keywords

Plasmonic lenses FIB Elliptical nano-pinhole NSOM 

Notes

Acknowledgment

The work was supported by the National Natural Science Foundation of China (No.60877021 and No.61077010).

References

  1. 1.
    Stockman MI (2004) Nanofocusing of optical energy in tapered plasmonicwaveguides. Phys Rev Lett 93:137404CrossRefGoogle Scholar
  2. 2.
    Baida FI, Belkhir A (2009) Superfocusing and light confinement by surface plasmon excitation through radially polarized beam. Plasmonics 4:51–59CrossRefGoogle Scholar
  3. 3.
    Fu Y, Zhou W, Lim LEN, Du CL, Luo XG (2007) Plasmonic microzone plate: superfocusing at visible regime. Appl Phys Lett 91:061124CrossRefGoogle Scholar
  4. 4.
    Fu Y, Liu Y, Zhou X, Zhu S (2010) Experimental demonstration of focusing and lasing of plasmonic lens with chirped circular slits. Opt Express 18(4):3438–3443CrossRefGoogle Scholar
  5. 5.
    Jia B, Shi H, Li J, Fu Y, Du C, Gu M (2009) Near-field visualization of focal depth modulation by step corrugated plasmonic slits. Appl Phys Lett 94:151912CrossRefGoogle Scholar
  6. 6.
    Fu Y, Zhou X, Liu Y (2010) Ultra-enhanced lasing effect of plasmonic lens structured with elliptical nano-pinholes distributed in variant period. Plasmonics 5(2):111–116CrossRefGoogle Scholar
  7. 7.
    Fu Y, Zhou X (2010) Topical review: plasmonic lenses, Plasmonics 5(3). doi: 10.1007/s11468-010-9144-9
  8. 8.
    Yanai A, Levy U (2009) Plasmonic focusing with a coaxial structure illuminated by radially polarized light. Opt Express 17:924–932CrossRefGoogle Scholar
  9. 9.
    Liu Z, Steele JM, Srituravanich W, Pikus Y, Sun C, Zhang X (2005) Focusing surface plasmons with a plasmonic lens. Nano Lett 5:1726–1729CrossRefGoogle Scholar
  10. 10.
    Liu Z, Steele JM, Lee H, Zhang X (2006) Tuning the focus of a plasmonic lens by the incident angle. Appl Phys Lett 88:171108CrossRefGoogle Scholar
  11. 11.
    Steele JM, Liu Z, Wang Y, Zhang X (2006) Resonant and non-resonant generation and focusing of surface plasmons with circular gratings. Opt Express 14:5664–5670CrossRefGoogle Scholar
  12. 12.
    Fu Y, Zhou W, Lennie LEN (2008) Nano-pinhole-based optical superlens. Res Lett Phys 2008:148505Google Scholar
  13. 13.
    Xiuli Z, Yongqi Fu, Shi-Yong W, An-Jing P, Zhong-Heng C (2008) Funnel-shaped arrays of metal nano-cylinders for nano-focusing. Chin Phys Lett 25:3296–3299CrossRefGoogle Scholar
  14. 14.
    Lerman GM, Yanai A, Levy U (2009) Demonstration of nanofocusing by the use of plasmonic lens illuminated with radially polarized light. Nano Lett 9:2139–2143CrossRefGoogle Scholar
  15. 15.
    Zhan Q (2009) Adv Opt Photonics 1:1–57CrossRefGoogle Scholar
  16. 16.
    Fu Y, Zhou W, Lennie LEN, Du C (2007) Influences of V-shaped plasmonic nanostructures on transmission properties. Appl Phys B 86:461–466CrossRefGoogle Scholar
  17. 17.
    Fu Y, Bryan NKA (2005) Investigation of physical properties of quartz via focused ion beam bombardment. Appl Phys B 80:581–585CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.School of Physical ElectronicsUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China

Personalised recommendations