%0 Journal Article %1 Welsh:09 %A Welsh, Gregor H. %A Wynne, Klaas %D 2009 %I OSA %J Opt. Express %K Surface Ultrafast nonlinear optics plasmons terahertz %N 4 %P 2470--2480 %T Generation of ultrafast terahertz radiation pulses on metallic nanostructured surfaces %U http://www.opticsexpress.org/abstract.cfm?URI=oe-17-4-2470 %V 17 %X A resonant “incoherent” rectification process is presented relying on the excitation of surface plasmons on a nanostructured metal surface. Excitation of gold and silver films with 800-nm femtosecond laser pulses results in the emission of terahertz radiation with an angle-dependent efficiency and an approximately third-order power dependence. It is shown that the source of this terahertz pulse generation is the surface-plasmon-assisted multiphoton ionization and ponderomotive acceleration in the evanescent field of the surface plasmon. Simple models are used to understand the forces and dynamics near the surface.

@article{Welsh:09, abstract = {A resonant “incoherent” rectification process is presented relying on the excitation of surface plasmons on a nanostructured metal surface. Excitation of gold and silver films with 800-nm femtosecond laser pulses results in the emission of terahertz radiation with an angle-dependent efficiency and an approximately third-order power dependence. It is shown that the source of this terahertz pulse generation is the surface-plasmon-assisted multiphoton ionization and ponderomotive acceleration in the evanescent field of the surface plasmon. Simple models are used to understand the forces and dynamics near the surface.}, added-at = {2009-04-15T12:44:32.000+0200}, author = {Welsh, Gregor H. and Wynne, Klaas}, biburl = {https://www.bibsonomy.org/bibtex/2275a879702fc97984b20d93f6408e968/klaaswynne}, description = {Generation of ultrafast terahertz radiation pulses on metallic nanostructured surfaces}, interhash = {dee15f1f780bd97fce2cc416e7387f91}, intrahash = {275a879702fc97984b20d93f6408e968}, journal = {Opt. Express}, keywords = {Surface Ultrafast nonlinear optics plasmons terahertz}, number = 4, pages = {2470--2480}, publisher = {OSA}, timestamp = {2009-04-15T13:28:13.000+0200}, title = {Generation of ultrafast terahertz radiation pulses on metallic nanostructured surfaces}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-17-4-2470}, volume = 17, year = 2009 }