# IEEE Journal of Selected Topics in Quantum Electronics

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Displaying Results 1 - 25 of 37

Publication Year: 2013, Article Sequence Number: 0000101
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• ### IEEE Journal of Selected Topics in Quantum Electronics publication information

Publication Year: 2013, Article Sequence Number: 0000201
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Publication Year: 2013, Article Sequence Number: 0100102
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• ### Editorial

Publication Year: 2013, Article Sequence Number: 0200101
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• ### Introduction to the Issue on Current Trends in Terahertz Photonics and Applications

Publication Year: 2013, Article Sequence Number: 0200202
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• ### Strikingly Different Behaviors of Photoluminescence and Terahertz Generation in InGaN/GaN Quantum Wells

Publication Year: 2013, Article Sequence Number: 8400106
Cited by:  Papers (5)
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We have investigated photoluminescence (PL) and terahertz (THz) generation simultaneously from multiple InGaN/GaN quantum wells (QWs) with different well periods. The PL intensity fully saturates when the period of QWs is increased up to 4. However, THz output power continuously scales up even if the period of QWs is increased up to 16. Such a behavior indicates that high-power THz wave can be gen... View full abstract»

• ### Terahertz-Wave Generation Using Graphene: Toward New Types of Terahertz Lasers

Publication Year: 2013, Article Sequence Number: 8400209
Cited by:  Papers (31)
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This paper reviews recent advances in terahertz-wave generation in graphene toward the creation of new types of terahertz lasers. First, fundamental basis of the optoelectronic properties of graphene is introduced. Second, nonequilibrium carrier relaxation or recombination dynamics in optically or electrically pumped graphene is described to introduce a possibility of negative dynamic conductivity... View full abstract»

• ### Fractal Structures for THz Radiation Emitters

Publication Year: 2013, Article Sequence Number: 8400310
Cited by:  Papers (4)
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We present a review on a special class of photoconductive (PC) terahertz (THz) dipole emitters based on fractal geometry. A comprehensive study of these superior THz antenna designs that are able to emit higher THz radiation power and detect lower THz radiation signal levels than the traditional THz PC antennas is performed. It is shown that the presented fractal PC THz emitters operate in a plasm... View full abstract»

• ### A review of terahertz plasmonics in subwavelength holes on conducting films

Publication Year: 2013, Article Sequence Number: 8400416
Cited by:  Papers (9)
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In this paper, we present a review of experimental studies of terahertz plasmonic transmission properties through subwavelength holes patterned in conducting films. The frequency-dependent transmission spectrum reveals resonant behavior with an anomalously high peak transmission which is mediated by the excitation of surface plasmon polaritons. We show how terahertz time-domain spectroscopy has be... View full abstract»

• ### Spectrum Analysis of 2-D Plasmon in GaN-Based High Electron Mobility Transistors

Publication Year: 2013, Article Sequence Number: 8400507
Cited by:  Papers (6)
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We have investigated terahertz (THz) resonant absorption spectra in grating-gate GaN high electron mobility transistors. The results indicate that both the symmetrical plasmon mode and the asymmetrical plasmon mode play an important role in the strong absorption of THz waves. The excitation process and dynamic response of these plasmons are investigated in detail. Our results also indicate that th... View full abstract»

• ### Standing-Wave Plasmonic Resonance in Terahertz Extraordinary Transmission

Publication Year: 2013, Article Sequence Number: 8400606
Cited by:  Papers (1)
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The effect of total circumference on the terahertz transmission response of coaxial H-shaped annular aperture arrays punctured in a thin metal film on a silicon substrate is investigated. Unexpectedly, the resonance frequencies are not sensitive to the details of the shape for the coaxial annular aperture, but intensely depend on the total circumference in a unit cell. Furthermore, a clear inverse... View full abstract»

• ### Polarization-Independent Plasmon-Induced Transparency in a Fourfold Symmetric Terahertz Metamaterial

Publication Year: 2013, Article Sequence Number: 8400707
Cited by:  Papers (14)
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Metamaterials that reveal fascinating and unique resonant properties allow for adequate control of electromagnetic waves at will. Recently, considerable studies have shown that the plasmon-induced transparency (PIT) effect can be realized by metamaterials via destructive interference between different resonance modes; however, most of them are sensitive to the polarization of incident wave. Here, ... View full abstract»

• ### Enhanced Q-factor in Optimally Coupled Macrocell THz Metamaterials: Effect of Spatial Arrangement

Publication Year: 2013, Article Sequence Number: 8400807
Cited by:  Papers (7)
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We present a study of a novel coupling scheme based on the use of two traditional single-gap split ring resonators (SRRs) and two asymmetric double-gap split ring resonators (ASRs) that have different spatial arrangements. Each unit cell consists of two resonator elements. In particular, the two-SRR and two-ASR unit cells are arranged in vertical, horizontal, and diagonal configurations to form a ... View full abstract»

• ### Modeling of Terahertz Heating Effects in Realistic Tissues

Publication Year: 2013, Article Sequence Number: 8400908
Cited by:  Papers (1)
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The terahertz (THz) propagation in real tissues causes heating as with any other electromagnetic radiation propagation. A finite-element (FE) model that provides numerical solutions to the heat conduction equation coupled with realistic models of tissues is employed in this study to compute the temperature raise due to THz propagation. The results indicate that the temperature raise is dependent o... View full abstract»

• ### Nonlinear THz Pump/THz Probe Spectroscopy of n-doped III–V Semiconductors

Publication Year: 2013, Article Sequence Number: 8401005
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By utilizing a terahertz (THz) pump/THz probe spectroscopy, the coherent plasma resonances in n-doped III-V semiconductors are clearly demonstrated through the modulations of reflection. The interaction between energetic electrons and the phonon field on the subpicosecond time scale is verified, and it is shown that this interaction applies for acoustic phonon modes. This study provides a unique m... View full abstract»

• ### Nonlinear Optical Phenomena Induced by Intense Single-Cycle Terahertz Pulses

Publication Year: 2013, Article Sequence Number: 8401110
Cited by:  Papers (15)  |  Patents (1)
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Recent developments in high-power table-top terahertz (THz) pulse sources enable us to coherently drive low-energy transitions into the nonlinear regime and to study fascinating nonlinear effects in various materials. This paper describes a tilted-pulse-front pumping scheme with a LiNbO3 crystal to generate intense single-cycle THz pulses. This scheme is capable of generating intense si... View full abstract»

• ### Exact Reconstruction of THz Sub-$lambda$ Source Features in Knife-Edge Measurements

Publication Year: 2013, Article Sequence Number: 8401211
Cited by:  Papers (7)
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The spatial features of a subwavelength terahertz source are not accessible using time-integrated knife-edge (KE) techniques due to the nonseparable space-time nature of the radiated field and to systematic modifications induced by the blade itself. We show that by combining KE with a time-resolved electro-optical sampling, the space-time coupling can be addressed and the source field profile can ... View full abstract»

• ### Noise Analysis and Optimization of Terahertz Photoconductive Emitters

Publication Year: 2013, Article Sequence Number: 8401305
Cited by:  Papers (2)
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The electromagnetic noise generated by terahertz photoconductive emitters was investigated, and the intensity of noise spectrum was analyzed by statistical method. The relationship between the noise of the emitter and the resistivity as well as carrier lifetime of the antenna material was obtained. And the effect of carrier lifetime and mobility of antennas on the THz generation efficiency was inv... View full abstract»

• ### Tunable Bistability in Photonic Multilayers Doped by Unmagnetized Plasma and Coupled Nonlinear Defects

Publication Year: 2013, Article Sequence Number: 8401407
Cited by:  Papers (10)
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The bistability behavior of photonic multilayers doped by unmagnetized plasma and coupled nonlinear defects is investigated using the modified transfer matrix method. Compared with a typical single nonlinear defected layer, our proposed structure strongly reduced and individually modulated bistability threshold values. Without changing the configuration of the photonic multilayers, the plasma dens... View full abstract»

• ### Characterization of Terahertz Beam Profile and Propagation

Publication Year: 2013, Article Sequence Number: 8401508
Cited by:  Papers (9)
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Two techniques for imaging a terahertz (THz) beam profile are described and employed in characterizing the THz beam propagation in a time-domain spectrometer. Aperture scanning yields a 2-D cross-sectional map of field amplitude at selected frequencies that is used to track beam evolution along its path. The Hartmann test produces a 2-D topographical image of the wavefront, also at selected freque... View full abstract»

• ### Quantum Physics With Ultrabroadband and Intense Terahertz Pulses

Publication Year: 2013, Article Sequence Number: 8401608
Cited by:  Papers (12)
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We present recent advances in the generation of highly intense multiterahertz transients and their application to nonlinear spectroscopy of bulk semiconductors. An optimized scheme of parametric amplification results in broadband single- or few-cycle terahertz transients with peak electric fields up to 10 or 25 MV/cm, respectively. Time-resolved four-wave mixing terahertz spectroscopy of InSb far ... View full abstract»

• ### High-Power Operation of Terahertz Oscillators With Resonant Tunneling Diodes Using Impedance-Matched Antennas and Array Configuration

Publication Year: 2013, Article Sequence Number: 8500108
Cited by:  Papers (61)
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We report the theoretical and experimental results of an examination of the structure needed to achieve high output power in resonant tunneling diode (RTD) oscillators in the terahertz range. An offset-fed slot antenna and antenna width adjustments were employed in a single oscillator to increase the output power by increasing the radiation conductance and impedance matching. A high output power o... View full abstract»

• ### Wide Spectrum Terahertz-Wave Generation From Nonlinear Waveguides

Publication Year: 2013, Article Sequence Number: 8500212
Cited by:  Papers (9)
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We have obtained efficient terahertz (THz)-wave generation from surface-emitting or waveguide propagation using Cherenkov-type radiation with nonlinear optical (NLO) crystals. This approach presented the following advantages: 1) many crystals can be used as THz-wave emitters; 2) it is not necessary to satisfy the phase-matching condition inside the crystal; and 3) THz-wave generation is not suppre... View full abstract»

• ### Tunable Picosecond Terahertz-Wave Parametric Oscillators Based on Noncollinear Pump-Enhanced Signal-Resonant Cavity

Publication Year: 2013, Article Sequence Number: 8500307
Cited by:  Papers (6)
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We have succeeded in developing tunable picosecond terahertz (THz)-wave parametric oscillators (ps-TPOs) by employing a noncollinear pump-enhanced signal-resonant cavity. As a parametric gain medium, we use two different shapes of unpoled, 5 mol% MgO-doped lithium niobate (MgO:LiNbO3) crystal: 1) a rectangle for Si-prism output-coupler technique and 2) a trapezoid for surface-emitted co... View full abstract»

• ### An Anomalous Conductance Decrease in Charge Sensitive Infrared Phototransistor

Publication Year: 2013, Article Sequence Number: 8500406
Cited by:  Papers (1)
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For charge-sensitive infrared phototransistors (CSIP), it is observed that “conductance decrease,” which is contrary to the standard “conductance increase” photon response, can also happen after absorbing infrared light. By experimental modeling the charge-up detection mechanism of CSIP via a capacitive way, we clarify that “conductance decrease” should be... View full abstract»

## Aims & Scope

Papers published in the IEEE Journal of Selected Topics in Quantum Electronics fall within the broad field of science and technology of quantum electronics of a device, subsystem, or system-oriented nature.

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## Meet Our Editors

Editor-in-Chief
Luke F. Lester
Virginia Polytechnic Institute & State University