Abstract
We used a confocal laser microscope to investigate the one-photon photoluminescence (PL) of gold antennas. The PL spectra can be precisely fitted to a plasmon-enhanced PL model. For increasing the antenna length, the energy peak position decreases continuously until it reaches a value of 1.7–1.8 eV. For longer antennas and smaller plasmon energies, we observe an additional, persistent shoulder in the PL spectra, which we explain by a Gaussian-shaped peak at . We attribute this behavior to the opening of an additional decay path for electrons at the gold interband transition edge, which we observe only for long antennas.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Tianyi Wang, David Halaney, Derek Ho, Marc D. Feldman, and Thomas E. Milner
Biomed. Opt. Express 4(4) 584-595 (2013)
Da-Shin Wang, Fu-Yin Hsu, and Chii-Wann Lin
Opt. Express 17(14) 11350-11359 (2009)
Haitao Huang, Min Li, Pian Liu, Lin Jin, Hui Wang, and Deyuan Shen
Opt. Lett. 41(12) 2700-2703 (2016)