Feng, Liang and Liu, Zhaowei and Fainman, Yeshaiahu (2011) Direct observation of plasmonic index ellipsoids on a deep-subwavelength metallic grating. Applied Optics, 50 (31). G1-G6. ISSN 0003-6935 http://resolver.caltech.edu/CaltechAUTHORS:20111212-091339535
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We constructed a metallic grating on a deep-subwavelength scale and tested its plasmonic features in visible frequencies. The deep-subwavelength metallic grating effectively acts as an anisotropic homogeneous uniaxial form-birefringent metal, exhibiting different optical responses for polarizations along different optical axes. Therefore, this form-birefringent metal supports anisotropic surface plasmon polaritons that are characterized by directly imaging the generated plasmonic index ellipsoids in reciprocal space. The observed plasmonic index ellipsoids also show a rainbow effect, where different colors are dispersively distributed in reciprocal space.
|Additional Information:||© 2011 Optical Society of America. Received 29 June 2011; accepted 21 July 2011; posted 29 July 2011 (Doc. ID 149771); published 9 September 2011. We thank Dr. Dong Yan at UC Riverside for his help in FIB fabrication. This work is supported by the National Science Foundation (NSF), the Defense Advanced Research Projects Agency (DARPA), and NSF Engineering Research Center for Integrated Access Networks.|
|Classification Code:||OCIS codes: 240.6680, 310.6628, 050.2555|
|Official Citation:||Liang Feng, Zhaowei Liu, and Yeshaiahu Fainman, "Direct observation of plasmonic index ellipsoids on a deep-subwavelength metallic grating," Appl. Opt. 50, G1-G6 (2011) http://www.opticsinfobase.org/abstract.cfm?URI=ao-50-31-G1|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||13 Dec 2011 22:50|
|Last Modified:||26 Dec 2012 14:36|
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