2017
DOI: 10.1038/s41598-017-11005-6
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Active Control of Charge Density Waves at Degenerate Semiconductor Interfaces

Abstract: We present an optoelectronic switch for functional plasmonic circuits based on active control of Surface Plasmon Polaritons (SPPs) at degenerate PN+-junction interfaces. Self-consistent multi-physics simulations of the electromagnetic, thermal and IV characteristics of the device have been performed. The lattice matched Indium Gallium Arsenide (In0.53Ga0.47As) is identified as a better semiconductor material compared to Si for the practical implementation of the proposed optoelectronic switch providing higher … Show more

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Cited by 9 publications
(8 citation statements)
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“…In this case, the ideal modulation range of the transmission and absorption is 67% and 32%, respectively, and the corresponding differential transmission is as high as 573. Due to the large distance between the ohmic and Schottky contacts, the applied bias here is higher than several reported works. , However, the applied bias is dominantly dropped over the long IGZO channel, and the power dissipation is distributed over a wide range. Several devices have been tested successfully without any breakdown in the aforementioned voltage range.…”
Section: Modulation With Schottky Diodesmentioning
confidence: 64%
See 1 more Smart Citation
“…In this case, the ideal modulation range of the transmission and absorption is 67% and 32%, respectively, and the corresponding differential transmission is as high as 573. Due to the large distance between the ohmic and Schottky contacts, the applied bias here is higher than several reported works. , However, the applied bias is dominantly dropped over the long IGZO channel, and the power dissipation is distributed over a wide range. Several devices have been tested successfully without any breakdown in the aforementioned voltage range.…”
Section: Modulation With Schottky Diodesmentioning
confidence: 64%
“…Apart from passive SPPs, active SPP devices with electrically tunable properties enable applications in real-time controllable subwavelength circuits, such as switches, attenuators, and phase and frequency shifters, etc. , At optical frequencies, liquid plasmonic materials, ferroelectric materials, semiconductors, and P–N diodes have been studied to actively manipulate SPPs. However, their modulation depth is typically less than 20%. To achieve tunable SPPs at microwave frequencies, commercially purchased chips, such as varactor diodes, have been soldered on SPP devices. However, these soldered chips were not monolithically fabricated with the SPP structures.…”
Section: Introductionmentioning
confidence: 99%
“…In this work, we present a significant step towards realizing a complete semiconductorbased plasmonic switch referred to as a Surface Plasmon Polariton Diode (SPPD) [62][63][64][65]. Here, we build upon our past work [65], where we have demonstrated excitation and modulation of SPPs modes at the interface of the degenerately doped lattice-matched Indium Gallium Arsenide (In0.53Ga0.47As) PN ++ -junctions grown epitaxially on Indium Phosphide (InP) and proceed to the next important step by experimentally demonstrating the temporal response of the device.…”
Section: Introductionmentioning
confidence: 99%
“…These reflection features correspond to coupling into electromagnetic (EM) modes supported either at the PN ++interface or in the higher index P-layer of the device. To investigate these spectral features, we modified the already-developed COMSOL-based electro-optic model [62][63][64][65] to solve for the current device architecture and proceeded to numerically examine the fabricated SPPD. Essential parameters required to effectivity replicate the fabricated PN ++ -junction such as doping concentrations at thermal equilibrium, junction depth, doping dependent and electron and hole mobilities and scattering rates, are used from our previous work [65].…”
Section: Introductionmentioning
confidence: 99%
“…Optimization in the energy absorption by the metal powders could be possible by laser action on metal particles where laser pulse with frequency close to the particle’s surface plasmon polariton (SPP) resonances are used, resulting in localized electron excitations, leading to optical resonance phenomena (Zayats et al , 2005; Barnes et al , 2003; Hutter and Fendler, 2004; Shinji and Takayuki, 2012). One of the most fascinating aspects of SPPs is the way light is channeled using the system geometries and has been used in wide range of application (Zhao et al , 2006; Pendry, 2000; Zhang and Liu, 2008; Oulton et al , 2009; Genov et al , 2011; Vinnakota and Genov, 2014, 2017). Light-trapping layers using metallic plasmonic microstructures have gained significant attention (Linic et al , 2011; Atwater and Polman, 2010; Schuller, 2010) and efficient resonant light absorption by several plasmonic nanostructures with microcavities (Long, 2009), and gap-plasmon resonators (Rand et al , 2004; Moreau et al , 2012) has been extensively studied.…”
Section: Introductionmentioning
confidence: 99%