期刊
NANO LETTERS
卷 10, 期 5, 页码 1848-1852出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl1005806
关键词
Semiconductors; two-photon emission; nanoparticles; plasmonic enhancement
We demonstrate experimentally and theoretically a broad-band enhancement of the spontaneous two-photon emission from AlGaAs at room temperature by plasmonic nanoantenna arrays fabricated on the semiconductor surface. Plasmonic structures with inherently low quality factors but very small effective volumes are shown to be optimal. A 20-fold enhancement was achieved for the entire antenna array, corresponding to an enhancement of nearly 3 orders of magnitude for charge carriers emitting at the near field of a plasmonic antenna.
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