Linear and Nonlinear Optical Characterization of Aluminum Nanoantennas

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• 作者：Patrick M. Schwab ; Carola Moosmann ; Matthias D. Wissert ; Ekkehart W.-G. Schmidt ; Konstantin S. Ilin ; Michael Siegel ; Uli Lemmer ; Hans-J眉rgen Eisler
• 刊名：Nano Letters
• 出版年：2013
• 出版时间：April 10, 2013
• 年：2013
• 卷：13
• 期：4
• 页码：1535-1540
• 全文大小：416K
• 年卷期：v.13,no.4(April 10, 2013)
• ISSN：1530-6992

文摘

We experimentally determine the order of multiphoton induced luminescence of aluminum nanoantennas fabricated on a nonconductive substrate using electron-beam lithography to be 2.11 (卤0.10). Furthermore, we optically characterize these nanostructures via linear dark-field microscopy and nonlinear multiphoton laser excitation. We hereby observe different spectral response functions that can be seen as a splitting of peak positions when the antenna arm length is increased to L_arm > 150 nm which has not yet been reported for aluminum nanostructures.

Keywords:

Plasmon; aluminum nanoantenna; dark-field microscopy; laser induced photoluminescence; nonlinear plasmonics