OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 12, Iss. 12 — Dec. 1, 1995
  • pp: 2372–2376

Resonance wavelengths of silver–gold compound metal island films

Kazutaka Baba, Toshiaki Okuno, and Mitsunobu Miyagi  »View Author Affiliations

JOSA B, Vol. 12, Issue 12, pp. 2372-2376 (1995)

View Full Text Article

Enhanced HTML    Acrobat PDF (398 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The resonance wavelength of a silver–gold compound metal island (CMI) film can be easily defined by the control of the mixture ratio of silver and gold. We have investigated its mechanism by observing the film microstructure with a scanning electron microscope. The shift of the resonance wavelength induced by the adjustment of the mixture ratio is attributed to two important factors: (1) the changes of the island shape and (2) the changes of the dielectric constant of the silver–gold alloy. For silver-rich CMI films, the island shape slightly changes according to the mixture ratio and becomes near spherical or prolate ellipsoidal. On the other hand, for gold-rich CMI films, the island shape becomes more oblate as the gold becomes richer. Therefore the resonance wavelength shifts are considered to be caused mainly by the changes of the dielectric constant and the island shape for the the silver-rich and the gold-rich CMI films, respectively. The resonance wavelengths calculated theoretically from the scanning electron microscope observations are similar to the measured ones.

© 1995 Optical Society of America

Kazutaka Baba, Toshiaki Okuno, and Mitsunobu Miyagi, "Resonance wavelengths of silver–gold compound metal island films," J. Opt. Soc. Am. B 12, 2372-2376 (1995)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. G. Mbise, G. B. Smith, G. A. Niklasson, and C. G. Granqvist, "Angular-selective optical properties of Cr films made by oblique-angle evaporation," Appl. Phys. Lett. 54, 987–989 (1989). [CrossRef]
  2. K. Baba and M. Miyagi, "Anisotropic optical media from laminated island films: theory," J. Opt. Soc. Am. A 8, 619–624 (1991). [CrossRef]
  3. D. Ma, K. Tsuchida, H. Kataoka, and S. Kawakami, "Laminated polarizer with granular metallic films for short wave-length region," Trans. Inst. Electron. Inf. Commun. Eng. J74-C-I, 552–558 (1991).
  4. M. J. Bloemer and J. W. Haus, "Versatile waveguide polarizer incorporating an ultrathin silver film," Appl. Phys. Lett. 61, 1619–1621 (1992). [CrossRef]
  5. K. Baba, R. Yamada, S. Nakao, and M. Miyagi, "Three-dimensional optical disks using metallic island films: a proposal," Electron. Lett. 28, 676–678 (1992). [CrossRef]
  6. A. Leitner, "Second-harmonic generation in metal island films consisting of oriented silver particles of low symmetry," Mole. Phys. 70, 197–207 (1990). [CrossRef]
  7. R. F. Haglund Jr., L. Yang, R. H. Magruder III, J. E. Wittig, K. Becker, and R. A. Zuhr, "Picosecond nonlinear optical response of a Cu:silica nanocluster composite," Opt. Lett. 18, 373–375 (1993). [CrossRef] [PubMed]
  8. K. Baba, T. Okuno, and M. Miyagi, "Silver–gold compound metal island films prepared by using a two-step evaporation method," App. Phys. Lett. 62, 437–439 (1993). [CrossRef]
  9. See, for example, S. Norrman, T. Andersson, C. G. Granqvist, and O. Hunderi, "Optical properties of discontinuous gold island films," Phys. Rev. B 18, 674–693 (1978). [CrossRef]
  10. S. Yamaguchi, "The resonance type absorption of very thin silver and gold films," J. Phys. Soc. Jpn. 15, 1577–1585 (1960). [CrossRef]
  11. J. A. Osborn, "Demagnetizing factors of the general ellipsoid," Phys. Rev. 67, 351–357 (1945). [CrossRef]

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.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited