# IEEE Journal of Quantum Electronics

## Volume 53 Issue 5 • Oct. 2017

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Displaying Results 1 - 22 of 22
• ### Front cover

Publication Year: 2017, Article Sequence Number: 0000501
| PDF (341 KB)
• ### IEEE Journal of Quantum Electronics publication information

Publication Year: 2017, Article Sequence Number: 0001101
| PDF (163 KB)
• ### IEEE Journal of Quantum Electronics information for authors

Publication Year: 2017, Article Sequence Number: 0001701
| PDF (108 KB)
• ### Blank page

Publication Year: 2017, Article Sequence Number: 0002301
| PDF (2 KB)

Publication Year: 2017, Article Sequence Number: 0100502
| PDF (106 KB)
• ### Modeling Passive Mode-Locking via Saturable Absorption in Graphene Using the Finite-Difference Time-Domain Method

Publication Year: 2017, Article Sequence Number: 1300210
| | PDF (1673 KB) | HTML

An approach for modeling the dynamic saturable absorption of graphene using the finite-difference time-domain method is presented. In particular, this paper focuses on subpicosecond pulse formation in a passively mode-locked semiconductor laser. The dynamics and the saturability of the gain and absorption are described by a carrier rate equation. The carrier dynamics are coupled to the electromagn... View full abstract»

• ### TiO2-Based Q-Switched Ytterbium-Doped Fiber Laser

Publication Year: 2017, Article Sequence Number: 1600306
| | PDF (1221 KB) | HTML

A Q-switched ytterbium-doped fiber laser (YDFL) using Titanium dioxide nanoparticles (TiO2) as a saturable absorber (SA) is proposed and demonstrated. Q-switched pulses with a center wavelength of 1035.5 nm are obtained at a threshold pump power of 137.6 mW. The generated pulses have a maximum repetition rate and minimum pulse width of 86.7 kHz and 4.3 μs, respectively, as well a... View full abstract»

• ### Definition of Thermo-Optical Characteristics of Uniaxial Crystals

Publication Year: 2017, Article Sequence Number: 1700208
| | PDF (640 KB) | HTML

Thermally induced distortions of laser radiation caused by the photoelastic effect during high-power beam propagation through optical elements cut along the optical axis of uniaxial crystals have been investigated. Thermo-optical characteristics for uniaxial crystals of all three syngony types have been introduced: the optical anisotropy parameter ξ defining the distribution of the axes of ... View full abstract»

• ### Design of 1.3- $mu text{m}$ High-Performance Directly Modulated Lasers Based on High-Order Slotted Surface Gratings

Publication Year: 2017, Article Sequence Number: 2000509
| | PDF (1633 KB) | HTML

1.3-μm high-speed directly modulated lasers (DMLs) based on high-order slotted surface gratings are proposed. The time-domain travelling-wave model combined with the 2-D scattering matrix method is employed for the analysis of the proposed DMLs. By optimization an intrinsic direct-modulation bandwidth up to 33 GHz has been predicted for a 250-μm-long laser with a threshold current of... View full abstract»

• ### Interactive Study of Electroreflectance and Photocurrent Spectra in InGaN/GaN-Based Blue LEDs

Publication Year: 2017, Article Sequence Number: 3300206
| | PDF (913 KB) | HTML

We experimentally and theoretically investigate the relationship between the electroreflectance (ER) and photocurrent (PC) spectra, and how they can be utilized to estimate the flat-band voltage and the bandgap energy of the InGaN/GaN-based quantum-well (QW) structure in blue light-emitting diodes. With theoretical modeling of ER and PC spectra, we calculate the changes in both the refractive inde... View full abstract»

• ### Enhanced Photoresponsivity From Hybrid-ZnO Nanowires With White LED 400–700-nm Illumination

Publication Year: 2017, Article Sequence Number: 4000206
| | PDF (5752 KB) | HTML

This paper highlights the photoresponsivity property of a hybrid-ZnO nanowire (ZnO NW) photodetector to a white LED source with a wavelength range of 400-700 nm. The use of methanol via the vapor phase transport method was utilized to achieve the incorporation of carbon and oxygen particles with Zn to form hybrid-ZnO NWs. Field emission scanning electron microscope, X-ray diffraction, and Raman sc... View full abstract»

• ### High-Performance Mid-Wavelength InAs/GaSb Superlattice Infrared Detectors Grown by Production-Scale Metalorganic Chemical Vapor Deposition

Publication Year: 2017, Article Sequence Number: 4000305
| | PDF (1268 KB) | HTML

We demonstrate high-performance mid-wavelength p-i-n infrared detectors based on InAs/GaSb type-II superlattices (SLs) grown by a production-scale metalorganic chemical vapor deposition system. Through a specially-designed gas switching sequence and the use of GaAs-type of interfacial layers, strain-balanced SLs with excellent material quality were obtained, as evidenced by atomic force microscopy... View full abstract»

• ### Parameter Study of Resonator-Quantum Well Infrared Photodetectors

Publication Year: 2017, Article Sequence Number: 4000410
| | PDF (2202 KB) | HTML

We recently proposed a resonator structure to increase the quantum efficiency (QE) of a quantum well infrared photodetector. In this paper, we performed a systematic study on its QE as a function of detector size and doping density. We found that the experimental result generally agrees with the prediction from electromagnetic modeling, and the resonant coupling scheme is effective with the pixel ... View full abstract»

• ### Numerical Study on the Supercontinuum Generation in an Active Highly Nonlinear Photonic Crystal Fiber With Flattened All-Normal Dispersion

Publication Year: 2017, Article Sequence Number: 6100308
| | PDF (1292 KB) | HTML

We numerically study the dynamics of supercontinuum generation (SCG) in an ytterbium-doped highly nonlinear photonic crystal fiber (HNL-PCF) with flattened all-normal dispersion (FAND) in the sub-picosecond pulse regime. We discuss the enhancement of the energy spectral density and the recovery of the peak power depletion in the SCG process through the fiber in comparison with the SCG based on a p... View full abstract»

• ### Evolution of Surface Acoustic Waves in an Optical Microfiber

Publication Year: 2017, Article Sequence Number: 6800808
| | PDF (1396 KB) | HTML

This paper reports stimulated Brillouin scattering characterization in a tapered optical fiber using full-vectorial finite element-based numerical methods. Numerical simulations of both optical and acoustic waves' propagation through a tapered microfiber have been carried out. Acoustic modes over a range of wavenumber for different fiber core radii are obtained and nature of their both dominant an... View full abstract»

• ### Phase Resonance Tuning and Multi-Band Absorption Via Graphene-Covered Compound Metallic Gratings

Publication Year: 2017, Article Sequence Number: 7000810
| | PDF (1207 KB) | HTML

1-D compound metallic grating (CMG) is a periodic structure with more than one slit in each period. When CMG is combined with a graphene sheet as its cover, the incident light is effectively coupled to the plasmons in graphene which in turn can result in strong manipulation of light for both major polarizations. We show that tunable phase resonance and perfect absorption of the incident light are ... View full abstract»

• ### Investigation of Saturation Phenomena in Spatially Dispersive Graphene-Based Photoconductive Antennas Using Hot-Carriers Theory

Publication Year: 2017, Article Sequence Number: 7500108
| | PDF (1526 KB) | HTML

In this paper, a graphene-based photoconductive antenna (GPCA) is designed by considering its electronic and electromagnetic modeling. For the electronic modeling, energy balance transport model (EBTM) is utilized, because high DC and laser powers are applied to the GPCA, and moreover, it has sub-micron dimensions. On the other hand, for the electromagnetic modeling, an effective conductivity (non... View full abstract»

• ### Self-Mixing Interferometer With a Laser Diode: Unveiling the FM Channel and Its Advantages Respect to the AM Channel

Publication Year: 2017, Article Sequence Number: 7500210
| | PDF (953 KB) | HTML

In a self-mixing interferometer based on a diode laser, the measurement of the external reflector displacement s(t) is carried out by looking at the optical-phase signal cos 2ks(t), a signal readily detected as an amplitude modulation (AM) of emitted power. In contrast, the other available signal, sin2ks(t), a frequency modulation (FM) of the emitted field at optical frequency, is never used becau... View full abstract»

• ### Modal Linewidth Dependent Transmission Performance of 850-nm VCSELs With Encoding PAM-4 Over 100-m MMF

Publication Year: 2017, Article Sequence Number: 8000408
| | PDF (2822 KB) | HTML

By changing the transverse-mode spectral linewidth of vertical cavity surface emitting lasers (VCSELs) at 850 nm, the directly encoded four-level pulse amplitude modulation data transmission performance over 100-m-long OM4 multimode fiber (MMF) are demonstrated and compared. The multi-mode VCSEL chip with the largest aperture of 11 μm reveals the widest spectral linewidth and the highest op... View full abstract»

• ### Carrier Leakage Dynamics in Terahertz Quantum Cascade Lasers

Publication Year: 2017, Article Sequence Number: 8500508
| | PDF (1816 KB) | HTML

We analyze the output power versus temperature characteristics of two GaAs/Al0.15Ga0.85As terahertz quantum cascade lasers (THz-QCLs) with maximum operating temperature Tmax=200 and 177 K as well as of one GaAs/Al0.30Ga0.70As THz-QCL with Tmax=150 K and identify the thermally-activated leakage paths responsible for the laser perform... View full abstract»

• ### Reduction of Optical Feedback Originating From Ferroelectric Domains of Periodically Poled Crystals

Publication Year: 2017, Article Sequence Number: 9000109
| | PDF (2571 KB) | HTML

Optical feedback originating from the interfaces of the periodically poled domains of a nonlinear crystal is usually blocked by a bulky optical isolator to avoid an influence on the pump source. Here, a nonlinear bulk crystal with a slanted design of the periodic poling is used to suppress the optical feedback toward the laser source. This crystal is compared with a conventionally poled crystal, i... View full abstract»

• ### Analysis of the Public Channel of Quantum Key Distribution Link

Publication Year: 2017, Article Sequence Number: 9300408
| | PDF (2804 KB) | HTML

Quantum key distribution (QKD) relies on the laws of physics to establish a symmetric binary key between remote parties. A QKD link involves the realization of a quantum channel for the transmission of quantum key material encoded in certain photon properties, as well as a public channel for verification of the exchanged key material. This paper deals with the mutual dependence of these channels a... View full abstract»

## Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof. Hon Ki Tsang
Chinese University of Hong Kong