Deterministic spatiotemporal control of optical fields in nanoantennas and plasmonic circuits

作者：Huang J S^*; Voronine D V; Tuchscherer P; Brixner T; Hecht B

来源：Physical Review B, 2009, 79(19): 195441.

DOI：10.1103/PhysRevB.79.195441

• antennas
• finite difference time-domain analysis
• Fourier transforms
• high-speed optical techniques
• nanophotonics
• optical pulse shaping
• plasmonics

We show that laser pulse shaping techniques can be applied to tailor the ultrafast temporal response of localized and propagating optical near fields in resonant optical antennas (ROAs) and plasmonic transmission lines, respectively. Using finite-difference time-domain simulations followed by Fourier transformation, we obtain the impulse response of a nanostructure in the frequency domain, which allows obtaining its temporal response to any arbitrary pulse shape. To illustrate the potential of the method we demonstrate deterministic optimal temporal pulse compression in ROAs with reduced symmetry, in a plasmonic two-wire transmission line, and in a prototype plasmonic circuit combining propagation effects and local resonances. The method described here will be of importance for the coherent control of field propagation in nanophotonic structures and light-induced processes in nanoscopic volumes.

• 出版日期2009-5