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# IEEE Journal of Quantum Electronics

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Displaying Results 1 - 19 of 19
• ### [Front cover]

Publication Year: 2011, Page(s): C1
| PDF (338 KB)
• ### IEEE Journal of Quantum Electronics publication information

Publication Year: 2011, Page(s): C2
| PDF (37 KB)

Publication Year: 2011, Page(s):1161 - 1162
| PDF (116 KB)
• ### Excited State Dynamics of 2-MPT-Derived Fluorescent Molecular Switches

Publication Year: 2011, Page(s):1163 - 1170
| | PDF (1597 KB) | HTML

Excited state dynamics from molecular fluorescent switches of the donor- or acceptor-derived 5-Methoxy-2-(2-pyridyl)thiazole (2-MPT) fluorescent molecules has been studied by ultrafast spectroscopy. The twisted intramolecular charge transfer (TICT) excited state is found to be created within 1 ps. Then the relaxation of TICT excited state causes further twist of the molecular conformation (especia... View full abstract»

• ### Broadband Enhancement of Light Harvesting in a Luminescent Solar Concentrator

Publication Year: 2011, Page(s):1171 - 1176
Cited by:  Papers (5)
| | PDF (472 KB) | HTML

Luminescent solar concentrators (LSCs) are large-area devices that absorb incident sunlight and emit luminescence photons with high quantum efficiency, which will finally be collected by a small photovoltaic (PV) system. The light-harvesting area of the PV system is much smaller than that of the LSC system, potentially reducing the cost of solar cells. Here, we present a theoretical description of... View full abstract»

• ### Transient Absorption Spectroscopic Study on Band-Structure-Type Change in CdTe/CdS Core-Shell Quantum Dots

Publication Year: 2011, Page(s):1177 - 1184
Cited by:  Papers (13)
| | PDF (1416 KB) | HTML

We report on the band edge alignment in zinc-blended-type CdTe/CdS core-shell quantum dots, using femtosecond spectroscopy. Time-resolved transient absorption spectroscopy directly shows that the system gradually developed from quasi-type-I to type-II as the shell thickness increased. Following photoexcitation of CdS, the injection of a hole from CdS valence band into CdTe valence band is observed... View full abstract»

• ### Effects of Asymmetric Grating Structures on Output Efficiency and Single Longitudinal Mode Operation in $lambda/4$-Shifted DFB Laser

Publication Year: 2011, Page(s):1185 - 1194
Cited by:  Papers (17)  |  Patents (1)
| | PDF (1659 KB) | HTML

We report on the design of the λ/4 -shifted DFB laser that can provide the high output efficiency as well as the stable single-mode operation. In particular, we investigate the effects of the asymmetry in the grating structure on the lasing characteristics of the λ/4-shifted DFB laser theoretically and experimentally. The steady-state and mode-stability analyses are performed for the... View full abstract»

• ### All-Optical Full-Adder Based on Cascaded PPLN Waveguides

Publication Year: 2011, Page(s):1195 - 1200
Cited by:  Papers (6)
| | PDF (485 KB) | HTML

An all-optical full-adder is proposed based on cascaded second-order nonlinearities of sum-frequency generation and difference-frequency generation in quasi-phase-matched periodically poled lithium niobate (PPLN) waveguides. By utilizing the logic functions of PPLN waveguides, a configuration based on cascaded PPLN waveguides is designed to achieve the all-optical full-adder. The waveforms, eye di... View full abstract»

• ### Raman Fiber Oscillators and Amplifiers Pumped by Semiconductor Disk Lasers

Publication Year: 2011, Page(s):1201 - 1207
Cited by:  Papers (2)
| | PDF (587 KB) | HTML

Optical pumping of Raman fiber lasers and amplifiers with semiconductor disk lasers represents novel advantageous approach as compared with conventional pumping techniques based on diode lasers and/or fiber converters. Short pulse generation and low-noise amplification are experimentally demonstrated using this pumping concept. High-power, low-noise, and diffraction-limited beam quality, naturally... View full abstract»

• ### Optical Nonlinear Properties and Carrier Plasma Effect at Low Carrier Density in Silicon Wire Waveguides

Publication Year: 2011, Page(s):1208 - 1213
Cited by:  Papers (1)
| | PDF (596 KB) | HTML

Ultrafast dynamics of amplitude and phase in a silicon wire waveguide are measured by a heterodyne pump probe technique at a wavelength of 1.55 μm. We determined the two-photon absorption coefficient and nonlinear refractive index to be βTPA = 0.43 cm/GW and n2 = 2.0 × 1018 m2/W, respectively. A theoretical analysis indicates that th... View full abstract»

• ### Theoretical Investigation of a Dye Solar Cell Wrapped Around an Optical Fiber

Publication Year: 2011, Page(s):1214 - 1221
Cited by:  Papers (15)
| | PDF (630 KB) | HTML

Dye solar cells (DSCs) are a complementary type of solar cell devices, and particularly interesting because they can be assembled in new and more exotic architectures compared to conventional solar cells. These systems need to be simulated preserving the real geometry of the device. In this paper, we use a 3-D model of DSCs implemented using finite element method to simulate DSCs wrapped around an... View full abstract»

• ### Optical Serial-to-Parallel Conversion Technique With Phase-Shifted Preamble for Optical Label Switching Systems

Publication Year: 2011, Page(s):1222 - 1229
Cited by:  Papers (5)
| | PDF (1130 KB) | HTML

We have investigated the fundamental operation of optical serial-to-parallel converter (OSPC) scheme with phase-shifted preamble, and its application to optical label switching operation. The OSPC consists of a π/2 phase-shifted preamble at the top of the packet generated at a transmitter-side, and a -π/2 phase-biased Mach-Zehnder delayed interferometer with the delay length of the t... View full abstract»

• ### Gain and Emission Cross Section Analysis of Wavelength-Tunable Si-nc Incorporated Si-Rich ${rm SiO}_{rm x}$ Waveguide Amplifier

Publication Year: 2011, Page(s):1230 - 1237
Cited by:  Papers (1)
| | PDF (710 KB) | HTML

Multi wavelength strip-loaded waveguide amplifiers fabricated by growing Si-nanocrystal (Si-nc) incorporated Si-rich SiOx with detuning N2O/SiH4 fluence ratio and RF plasma power are demonstrated, which show blue, yellow, and red multicolor amplified-spontaneous-emission (ASE) with gain coefficients of 157, 62, and 85.6 cm-1, and the corresponding produc... View full abstract»

• ### Widely Tuneable Dual-Wavelength Operation of a Highly Doped Erbium Fiber Laser Based on Diffraction Gratings

Publication Year: 2011, Page(s):1238 - 1243
| | PDF (457 KB) | HTML

We present, discuss, and compare several schemes for tuneable dual-wavelength operation of a highly doped erbium fiber laser with adjustable frequency difference. The different schemes are all based on external optical feedback with different diffraction grating configurations. Each wavelength can be tuned between 1528 and 1569 nm limited by the fiber gain spectrum, enabling a wavelength separatio... View full abstract»

• ### SWIR/MWIR InP-Based p-i-n Photodiodes With InGaAs/GaAsSb Type-II Quantum Wells

Publication Year: 2011, Page(s):1244 - 1250
Cited by:  Papers (14)  |  Patents (1)
| | PDF (1029 KB) | HTML

This paper presents the performance characteristics of InP-based p-i-n photodiodes with strain-compensated and lattice-matched InGaAs/GaAsSb type-II multiple quantum well (MQW) absorption regions. The results show that photodiodes with strain-compensated and lattice-matched absorption regions have optical response out to 3.4 and 2.8 μm with dark current densities of 9.7 and 1.66 mA cm-... View full abstract»

• ### Real-Time Characterization of Gated-Mode Single-Photon Detectors

Publication Year: 2011, Page(s):1251 - 1256
Cited by:  Papers (7)
| | PDF (550 KB) | HTML

We propose a characterization method for the overall detection efficiency, afterpulse and dark count probabilities of single-photon counting modules in real-time with simple instrumentation. This method can be applied when the module is running in its intended application, and is based on monitoring the statistics of the times between consecutive detections. A mathematical model is derived and fit... View full abstract»

• ### Comparative Study of Mode Control in Vertical-Cavity Surface-Emitting Lasers With Photonic Crystal and Micropillar Etching

Publication Year: 2011, Page(s):1257 - 1265
Cited by:  Papers (6)
| | PDF (666 KB) | HTML

The dependence of spectral, power versus current and small-signal modulation characteristics versus the etch depth in two types of surface-etched vertical-cavity surface-emitting lasers (VCSELs) are experimentally and theoretically investigated. One type has a photonic crystal (PC) fabricated in the top distributed Bragg reflector (DBR), whereas the second type has a micropillar (MP) created by re... View full abstract»

• ### Blank page

Publication Year: 2011, Page(s): 1266
| PDF (5 KB)
• ### IEEE Journal of Quantum Electronics information for authors

Publication Year: 2011, Page(s): C3
| PDF (26 KB)

## 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
Aaron R. Hawkins
Brigham Young University