TN242 2005010161 光束变换环形孔径有源激光谐振腔模式的数值模拟=Numerical simulation of beam-converting annular resonator with active medium[刊,中]／刘文广(国防科技大学理学院．湖南,长沙(410073)),陆启生…∥光学学报,-2004...TN242 2005010161 光束变换环形孔径有源激光谐振腔模式的数值模拟=Numerical simulation of beam-converting annular resonator with active medium[刊,中]／刘文广(国防科技大学理学院．湖南,长沙(410073)),陆启生…∥光学学报,-2004, 24(10),-1339-1343 建立了燃烧驱动环柱型高能化学激光器环形增益介质的5种分布模型。展开更多
We have investigated the influence of Ag nanorod radius(r)on the resonant modes of a two-dimensional plasmonic photonic crystal(PPC)with dipole sources embedded into the central vacancy area,using finite-difference ti...We have investigated the influence of Ag nanorod radius(r)on the resonant modes of a two-dimensional plasmonic photonic crystal(PPC)with dipole sources embedded into the central vacancy area,using finite-difference time-domain methods.Both the localized surface plasmon(LSP)mode of individual Ag nanorods and the resonant cavity mode of PPC are found to vary as a function of r.The resonant cavity mode is strongly enhanced as r is increased,while the LSP signal will eventually become no longer discernable in the Fourier spectrum of the time-evolved field.An optimized condition for the nanocavity field enhancement is found for a given PPC periodicity(e.g.d=375 nm)with the critical nanorod radius rc=d/3.At this point the resonant cavity mode has the strongest field enhancement,best field confinement and largest Q-factor.We attribute this to competition between the blocking of cavity confined light to radiate out when the cavity resonant frequency falls inside the opened photonic stopband as r reaches rc,and the transfer of cavity mode energy to inter-particle plasmons when r is further increased.展开更多
文摘TN242 2005010161 光束变换环形孔径有源激光谐振腔模式的数值模拟=Numerical simulation of beam-converting annular resonator with active medium[刊,中]／刘文广(国防科技大学理学院．湖南,长沙(410073)),陆启生…∥光学学报,-2004, 24(10),-1339-1343 建立了燃烧驱动环柱型高能化学激光器环形增益介质的5种分布模型。
基金supported by the National Basic Research Program of China(2006CB922003,2011CB921402)Chinese Academy of Sciences(KJCX2.YW.H06)National Natural Science Foundation of China(91021004,10574117,10974186)
文摘We have investigated the influence of Ag nanorod radius(r)on the resonant modes of a two-dimensional plasmonic photonic crystal(PPC)with dipole sources embedded into the central vacancy area,using finite-difference time-domain methods.Both the localized surface plasmon(LSP)mode of individual Ag nanorods and the resonant cavity mode of PPC are found to vary as a function of r.The resonant cavity mode is strongly enhanced as r is increased,while the LSP signal will eventually become no longer discernable in the Fourier spectrum of the time-evolved field.An optimized condition for the nanocavity field enhancement is found for a given PPC periodicity(e.g.d=375 nm)with the critical nanorod radius rc=d/3.At this point the resonant cavity mode has the strongest field enhancement,best field confinement and largest Q-factor.We attribute this to competition between the blocking of cavity confined light to radiate out when the cavity resonant frequency falls inside the opened photonic stopband as r reaches rc,and the transfer of cavity mode energy to inter-particle plasmons when r is further increased.
