Effects of longitudinal field on transmitted near field in doped semi-infinite semiconductors with a surface conducting sheet

Huang, Danhong; Rhodes, Crissy; Alsing, Paul M.; Cardimona, D. A.

doi:10.1063/1.2388651

Cited by 18 publications

(25 citation statements)

References 27 publications

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“…They can, however, still be electrically separated from each other by an energy barrier. 11 Light incident from z Ͻ 0 is diffracted by the grating in both the reflected ͑z Ͻ 0͒ and the transmitted ͑z Ͼ 0͒ regions. The diffraction ͑Bragg͒ modes of EMFs are excited by the induced optical polarization at the interface from both the conducting sheet and grating.…”

Section: Model and Theorymentioning

confidence: 99%

“…Our model is different from previously studied structures, such as a metal film or a metal grating between two semi-infinite dielectric materials ͑no longitudinal field͒, two semi-infinite metals ͑no surface plasmon͒, and a semi-infinite metal next to a half-space of air ͑no grating diffraction͒. It is a generalization of our previous study 11 on the effect of a longitudinal field by adding a metallic grating on top of the conducting sheet in order to generate and mix diffracted EMFs. It also extends our recent work 16 on the coupling of the electronically modulated 2D plasmon and the SP by including the retardation and longitudinal-field effects in calculating the diffracted near and far EMFs.…”

Section: Introductionmentioning

confidence: 95%

“…͑2͒ If the incident field is strongly diffracted by a surface grating on top of a metallic film, the momentum-independent ͑local͒ dielectric function is no longer applicable to high-order diffracted ͑near͒ fields in the terahertz frequency range. ͑3͒ When the frequency of the incident field is close to the bulk plasma-wave ͑BPW͒ frequency of a conductive bulk, which is very close to the SP frequency of a doped semiconductor, 11 the induced longitudinal field from the BPW must be included and described by a momentum-dependent ͑nonlocal͒ dielectric function. Previously proposed computational methods include a modal expansion, 3,12 the Chandezon approach, 13 a simplified analytic technique, 14 and a finite-difference time-domain method.…”

Section: Introductionmentioning

confidence: 99%

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Nonlocal mode mixing and surface-plasmon-polariton-mediated enhancement of diffracted terahertz fields by a conductive grating

et al. 2008

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This work generalizes our previous study of the effect of plasma-wave induced longitudinal fields ͓D. H. Huang et al. J. Appl. Phys. 100, 113711 ͑2006͔͒. We incorporate a conductive grating on top of a conducting sheet for generating and mixing Bragg modes arising from a reflected and/or transmitted electromagnetic field. It also generalizes our recent work on the coupling of electronically modulated two-dimensional plasmons with the surface plasmon ͓G. Gumbs and D. H. Huang, Phys. Rev. B 75, 115314 ͑2007͔͒ by including the retardation and longitudinal-field effects in calculating the diffracted near and far electromagnetic fields. The main result of this paper is the prediction of large enhancements at the band edges of a coupled Bloch-surfaceplasmon-polariton band in the spectrum of the reflected far electromagnetic field due to anticrossing gaps induced by the strong coupling between the continuous surface-plasmon-polariton mode and discrete Blochlike modes. The existence of these Bloch-like modes is a direct consequence of the nonlocal mixing of specular and diffraction modes of the reflected electromagnetic field by free-electron induced optical polarization and the interference of a pair of surface optical-polarization waves with opposite Bragg order numbers in the presence of a grating. The interference of these two counterpropagating surface waves leads to the formation of a Wannier-like state with associated electromagnetic fields localized within the grating-gap regions. The effects of the sheet density, plasmon instability, grating period, angle of incidence, and absorption loss on the optical enhancements of both transmitted and reflected electromagnetic fields are investigated.

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Section: Model and Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Nonlocal mode mixing and surface-plasmon-polariton-mediated enhancement of diffracted terahertz fields by a conductive grating

et al. 2008

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“…If there exist conduction electrons, in addition to bound electrons in charged point defects, with concentration n 0 , effective mass m * and homogeneous broadening γ e in the host material containing generated point defects, the matrix elements of the dielectric function are found to be (Huang et al, 2006):…”

Section: ( )mentioning

confidence: 99%

Multi-Timescale Microscopic Theory for Radiation Degradation of Electronic and Optoelectronic Devices

Huang¹,

Gao²,

Cardimona³

et al. 2015

American Journal of Space Science

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A multi-timescale hybrid model is proposed to study microscopically the degraded performance of electronic devices, covering three individual stages of radiation effects studies, including ultra-fast displacement cascade, intermediate defect stabilization and cluster formation, as well as slow defect reaction and migration. Realistic interatomic potentials are employed in molecular-dynamics calculations for the first two stages up to 100 ns as well as for the system composed of layers with thicknesses of hundreds of times the lattice constant. These quasi-steady-state results for individual layers are input into a ratediffusion theory as initial conditions to calculate the steady-state distribution of point defects in a mesoscopic-scale layered-structure system, including planar biased dislocation loops and spherical neutral voids, on a much longer time scale. Assisted by the density-functional theory for specifying electronic properties of point defects, the resulting spatial distributions of these defects and clusters are taken into account in studying the degradation of electronic and optoelectronic devices, e.g., carrier momentum-relaxation time, defect-mediated non-radiative recombination, defect-assisted tunneling of electrons and defect or charged-defect Raman scattering as well. Such theoretical studies are expected to be crucial in fully understanding the physical mechanism for identifying defect species, performance degradations in field-effect transistors, photo-detectors, light-emitting diodes and solar cells and in the development of effective mitigation methods during their microscopic structure design stages.

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“…All these methods are spatially local and adiabatic in time, thereby neglecting the nonlocal dynamic relationship [30], [31] between the induced material polarization and the total EM field in the Maxwell equations, but can be applied to dielectric host materials in which there are no free charged carriers. In addition, the absorption from the longitudinal field due to the induced plasma wave in 2 metals [32] has been neglected, which tends to underestimate the loss of SPP waves propagating along the interface between air and metals.…”

Section: Introductionmentioning

confidence: 99%

Effects of electronic quantum interference, photonic-crystal cavity, longitudinal field and surface-plasmon-polariton for optical amplification

Huang

Cardimona

Alsing

2006

2006 IEEE Nanotechnology Materials and Devices Conference

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information AFRL-RV-PS-TR-2008-1030 SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. (Clearance #VS06-0701). SUPPLEMENTARY NOTES ABSTRACTSome possibilities for coherent optical amplification of a normally-incident and weak radiation field are reviewed based on various physical mechanisms, such as electronic quantum interference induced by a coupling laser field in a three-level system, field enhancement through the cavity confinement of a radiation field in a photonic crystal and field concentration seen in a transmitted near field through a metallic surface grating due to excitation of surface-plasmon-polariton modes. Numerical results are presented and discussed to demonstrate these inter-esting effects. The important role played by a longitudinal field resulting from the absorption by an induced three-dimensional plasma wave inside a doped semiconductor is analyzed using a nonlocal and non-adiabatic model. SUBJECT TERMSamplification, quantum interference, surface-plasmon-polariton, photonic crystal, longitudinal field Abstract-Some possibilities for coherent optical amplification of a normally-incident and weak radiation field are reviewed based on various physical mechanisms, such as electronic quantum interference induced by a coupling laser field in a three-level system, field enhancement through the cavity confinement of a radiation field in a photonic crystal and field concentration seen in a transmitted near field through a metallic surface grating due to excitation of surface-plasmon-polariton modes. Numerical results are presented and discussed to demonstrate these interesting effects. The important role played by a longitudinal field resulting from the absorption by an induced three-dimensional plasma wave inside a doped semiconductor is analyzed using a nonlocal and non-adiabatic model.

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Effects of longitudinal field on transmitted near field in doped semi-infinite semiconductors with a surface conducting sheet

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Cited by 18 publications

References 27 publications

Nonlocal mode mixing and surface-plasmon-polariton-mediated enhancement of diffracted terahertz fields by a conductive grating

Nonlocal mode mixing and surface-plasmon-polariton-mediated enhancement of diffracted terahertz fields by a conductive grating

Multi-Timescale Microscopic Theory for Radiation Degradation of Electronic and Optoelectronic Devices

Effects of electronic quantum interference, photonic-crystal cavity, longitudinal field and surface-plasmon-polariton for optical amplification

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