OSA's Digital Library

Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 1101–1112

Terahertz near-field spectroscopy of filled subwavelength sized apertures in thin metal films

J. R. Knab, A. J. L. Adam, E. Shaner, H. J. A. J. Starmans, and P. C. M. Planken  »View Author Affiliations


Optics Express, Vol. 21, Issue 1, pp. 1101-1112 (2013)
http://dx.doi.org/10.1364/OE.21.001101


View Full Text Article

Enhanced HTML    Acrobat PDF (1328 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We have measured terahertz near-field spectra of cesium iodide crystals as small as ∼10 μm in diameter, which were deposited on single, sub-wavelength-sized apertures created in thin gold films on a substrate. The advantage of using small apertures for terahertz microspectroscopy is that only terahertz light that has interacted with the cesium iodide is observed. We find that around the transverse optical phonon frequency of cesium iodide, the amplitude transmission is as much influenced by the refractive index as by the absorption. We show that the ability to measure in the near-field of the apertures, where signals are relatively strong, allows us to measure on sample volumes as small as ∼5×10−16 m3.

© 2013 OSA

OCIS Codes
(180.4243) Microscopy : Near-field microscopy
(300.6495) Spectroscopy : Spectroscopy, teraherz
(170.6795) Medical optics and biotechnology : Terahertz imaging

ToC Category:
Microscopy

History
Original Manuscript: October 24, 2012
Revised Manuscript: December 30, 2012
Manuscript Accepted: December 31, 2012
Published: January 10, 2013

Citation
J. R. Knab, A. J. L. Adam, E. Shaner, H. J. A. J. Starmans, and P. C. M. Planken, "Terahertz near-field spectroscopy of filled subwavelength sized apertures in thin metal films," Opt. Express 21, 1101-1112 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-1-1101


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. P. U. Jepsen and B. M. Fisher, “Dynamic range in terahertz time-domain transmission and reflection spectroscopy,” Opt. Lett.30, 29–31 (2005). [CrossRef] [PubMed]
  2. M. Walther, B. Fischer, and P. U. Jepsen, “Noncovalent intermolecular forces in polycrystalline and amorphous saccharides in the far infrared,” Chem. Phys.288, 261–268 (2003). [CrossRef]
  3. Y. C. Shen, P. C. Upadhya, E. H. Linfield, and A. G. Davies, “Temperature-dependent low-frequency vibrational spectra of purine and adenine,” Appl. Phys. Lett.82, 2350–2352 (2003). [CrossRef]
  4. M. B. Johnston, L. M. Herz, A. Khan, A. Köhler, A. G. Davies, and E. H. Linfield, “Low-energy vibrational modes in phenylene oligomers studied by THz time-domain spectroscopy,” Chem. Phys. Lett.377, 256262 (2003). [CrossRef]
  5. R. Chakkittakandy, J. A. W. M. Corver, and P. C. M. Planken, “Terahertz spectroscopy to identify the polymorphs in freeze-dried mannitol,” J. Pharm. Sci.99, 932–940 (2010).
  6. A. J. L. Adam, “Review of near-field terahertz measurement methods and their applications,” J. Infrared Milli. Terahz. Waves32, 976–1019 (2011). [CrossRef]
  7. P. C. M. Planken, C. E. W. M. van Rijmenam, and R. N. Schouten, “Opto-electronic pulsed THz systems,” Semicon. Sci. Techn.20, s121–s127 (2005). [CrossRef]
  8. A. J. Huber, F. Keilmann, J. Wittborn, J. Aizpurua, and R. Hillenbrand, “Terahertz near-field nanoscopy of mobile carriers in single semiconductor nanodevices,” Nano Lett.8, 3766–3770 (2008). [CrossRef] [PubMed]
  9. H. -T. Chen, R. Kersting, and G. C. Cho, “Terahertz imaging with nanometer resolution,” Appl. Phys. Lett.83, 3009–3011 (2003). [CrossRef]
  10. A. Bitzer and M. Walther, “Terahertz near-field imaging of metallic sub-wavelength holes and hole arrays,” Appl. Phys. Lett.92, 231101 (2008). [CrossRef]
  11. A. Bitzer, H. Merbold, A. Thoman, T. Feurer, H. Helm, and M. Walther, “Terahertz near-field imaging of electric and magnetic resonances of a planar metamaterial,” Opt. Express17, 3826–3834 (2009). [CrossRef] [PubMed]
  12. M. Wächter, M. Nagel, and H. Kurz, “Tapered photoconductive field probe with subwavelength spatial resolution”, Appl. Phys. Lett.95, 041112 (2009). [CrossRef]
  13. M. Nagel, A. Michalski, T. Botzem, and H. Kurz, “Near-field investigation of THz surface-wave emission from optically excited graphite flakes,” Opt. Express19, 4667–4672 (2011). [CrossRef] [PubMed]
  14. M. A. Seo, A. J. L. Adam, J. H. Kang, J. W. Lee, S. C. Jeoung, Q. H. Park, P. C. M. Planken, and D. S. Kim, “Fourier-transform terahertz near-field imaging of one-dimensional slit arrays: mapping of electric-field-, magnetic-field-, and Poynting vectors,” Opt. Express15, 11781–11789 (2007). [CrossRef] [PubMed]
  15. A. J. L. Adam, J. M. Brok, M. A. Seo, K. J. Ahn, D. S. Kim, J. H. Kang, Q. H. Park, M. Nagel, and P. C. M. Planken, “Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures,” Opt. Express16, 7407–7417 (2008). [CrossRef] [PubMed]
  16. J. R. Knab, A. J. L. Adam, M. Nagel, E. Shaner, M. A. Seo, D. S. Kim, and P. C. M. Planken, “Terahertz near-Field vectorial imaging of subwavelength apertures and aperture arrays,” Opt. Express17, 15072–15086 (2009). [CrossRef] [PubMed]
  17. N. Kumar, A. C. Strikwerda, K. Fan, X. Zhang, R. D. Averitt, P. C. M. Planken, and A. J. L. Adam, “THz near-field Faraday imaging in hybrid metamaterials,” Opt. Express20, 11277–11287 (2012). [CrossRef] [PubMed]
  18. J. R. Knab, A. J. L. Adam, R. Chakkittakandy, and P. C. M. Planken, “Terahertz near-field microspectroscopy,” Appl. Phys. Lett.97, 031115 (2010). [CrossRef]
  19. L. Guestin, A. J. L. Adam, J. R. Knab, M. Nagel, and P. C. M. Planken, “Influence of the dielectric substrate on the terahertz electric near-field of a hole in a metal,” Opt. Express17, 17412–17425 (2009). [CrossRef] [PubMed]
  20. Y. Rong and K. A. Zaki, “Characteristics of generalized rectangular and circular ridge waveguides,” IEEE Trans. Microwave Theory Tech.48, 258–265 (2000). [CrossRef]
  21. A. Agrawal, H. Cao, and A. Nahata, “Time-domain analysis of enhanced transmission through a single subwavelength aperture,” Opt. Express13, 3535–3542 (2005). [CrossRef] [PubMed]
  22. G. Zhao, R. N. Schouten, N. van der Valk, W. Th. Wenckebach, and P. C. M. Planken, “Design and performance of a THz emission and detection setup based on a semi-insulating GaAs emitter,” Rev. Sci. Instrum.73, 1715–1719 (2002). [CrossRef]
  23. O. Mitrofanov, M. Lee, J. W. P. Hsu, L. N. Pfeiffer, K. W. West, J. D. Wynn, and J. F. Federici, “Terahertz pulse propagation through small apertures,” Appl. Phys. Lett.79, 907–909 (2001). [CrossRef]
  24. O. Mitrofanov, R. Harel, M. Lee, L. N. Pfeiffer, K. W. West, J. D. Wynn, and J. Federici, “Study of single-cycle pulse propagation inside a terahertz near-field probe,” Appl. Phys. Lett.78, 252–254 (2001). [CrossRef]
  25. O. Mitrofanov, M. Lee, J. W. P. Hsu, R. Harel, J. F. Federici, J. D. Wynn, L. N. Pfeiffer, and K. W. West, “Collection-mode near-field imaging With 0.5-THz Pulses,” IEEE J. Sel. Top. Quant. Electron.7, 600–607 (2001). [CrossRef]
  26. R. Chakkittakandy, A. W. M. Corver, and P. C. M. Planken, “Quasi-near field terahertz generation and detection,” Opt. Express16, 12794–12805 (2008). [CrossRef] [PubMed]
  27. M. Yamaguchi, F. Miyamaru, K. Yamamoto, M. Tani, and M. Hangyo, “Terahertz absorption spectra of L-, D, and DL-alanine and their application to determination of enantiometric composition,” Appl. Phys. Lett.86, 053903 (2005). [CrossRef]
  28. E. R. Brown, J. E. Bjarnason, A. M. Fedor, and T. M. Korter, “On the strong and narrow absorption feature in lactose at 0.53 THz,” Appl. Phys. Lett.90, 061908 (2007). [CrossRef]
  29. C. J. Bouwkamp, “On Bethe’s theory of diffraction by small holes,” Philips Res. Rep.5, 321–332 (1950).
  30. C. J. Bouwkamp, “On the diffraction of electromagnetic waves by small circular disks and holes,” Philips Res. Rep.5, 401–422 (1950).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited