# IEEE Journal of Selected Topics in Quantum Electronics

### Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 25 of 26
• ### Single-stage Ti:sapphire-pumped deep-infrared optical parametric oscillator based on CdSiP$^{2}$

Publication Year: 2018, Page(s): 1
| |PDF (1471 KB)

We report a high-repetition-rate femtosecond optical parametric oscillator (OPO) for the deep-infrared (deep-IR) based on the nonlinear optical crystal, CdSiP$_{2}$ (CSP), pumped directly by a Ti:sapphire laser, for the first time. By pumping CSP at <1 μm, we have achieved practical output powers at the longest wavelengths generated by any Ti:sapphire-pumped... View full abstract»

• ### Tunable Dual-Wavelength, Continuous-Wave, Mid-Infrared Generation Using Intracavity Difference Frequency Mixing in PPLN-Based Optical Parametric Oscillator

Publication Year: 2018, Page(s): 1
| |PDF (487 KB)

We report on a widely-tunable, dual-wavelength, continuous-wave, mid-infrared optical parametric oscillator (OPO), pumped by a dual-wavelength fiber source which was realized by combining two fiber lasers in series. The OPO was designed as a four-mirror singly resonant cavity, in which a PPLN crystal was used as nonlinear crystal. Two idler emissions with different wavelengths were observed, one b... View full abstract»

• ### Frontiers of mid-IR lasers based on transition metal doped chalcogenides

Publication Year: 2018, Page(s): 1
| |PDF (14740 KB)

Enabling broad tunability, high peak and average power, ultra-short pulse duration, and all known modes of laser operation - Transition-metal (TM)-doped II-VI chalcogenides are the materials of choice for direct lasing in the mid-IR. The host materials feature broad infrared transparency, high thermal conductivity, low phonon cut-off, low optical losses, and are available as either single crystals... View full abstract»

• ### Tm:Y2SiO5 crystal: effective material for the generation of eye-safe laser sources

Publication Year: 2018, Page(s): 1
| |PDF (1012 KB)

We report on continuous-wave and passively Q-switched Tm:Y2SiO5 (YSO) crystal lasers. For continuous-wave operation, a maximum output power of 3.23 W is achieved at 1969.8 nm with slope efficiency of 34.3%. The results represent the best laser performance that ever obtained in Tm3+-doped oxyorthosilicate materials. Effective continuous-wave lasers have been also obtained at 1976.0, 1972.9 and 2044... View full abstract»

• ### A 1150 W 1018 nm fiber laser bidirectional pumped by wavelength-stabilized laser diodes

Publication Year: 2018, Page(s): 1
| |PDF (1002 KB)

This paper presented a high power 1018 nm ytterbium-doped fiber laser pumped by wavelength-stabilized laser diodes in bidirectional pumping structure. A record output power reaching 1150 W was achieved, along with a slope efficiency of 82.9% and a beam quality factor of M2=1.96. The output spectrum exhibited an efficient ASE and parasitic lasing light suppression. The thermal effects were studied ... View full abstract»

• ### Reflectivity of superimposed Bragg gratings induced by longitudinal mode instabilities in fiber lasers

Publication Year: 2018, Page(s): 1
| |PDF (782 KB)

We report on reflectivity of transient Bragg gratings created in the active medium of a fiber laser with longitudinal mode instability. Despite long history of laser physics, reflectivity of such gratings were theoretically estimated and experimentally measured only recently. Based on coupled mode theory we derive theoretical model of the superimposed Bragg gratings for the special case of mode in... View full abstract»

• ### Directional Coupler Based on Single-Crystal Diamond Waveguides

Publication Year: 2018, Page(s): 1
| |PDF (12448 KB)

We report on the design, fabrication, and characterization of a 1550 nm/1950 nm directional coupler based on single-crystal diamond waveguides. The input and output ports of the waveguides are connected with 1550 nm and 1950 nm grating couplers to allow out-of-plane light coupling. The devices are fabricated using electron-beam lithography and reactive ion etching technologies. We obtain a good pe... View full abstract»

• ### RF photonics: An optical micro-combs' perspective

Publication Year: 2018, Page(s): 1
| |PDF (23024 KB)

In the past decade, optical frequency combs generated by high-Q micro-resonators, or optical micro-combs, which feature compact device footprints, low power consumption, and high repetition rates in broad optical bandwidths, have led to a revolution in a wide range of fields including metrology, telecommunications, radio frequency (RF) photonics, spectroscopy, sensing, and quantum optics. Among th... View full abstract»

• ### Frequency Domain Spectroscopy in Rare-Earth-Doped Gain Media

Publication Year: 2018, Page(s): 1
| |PDF (4020 KB)

Many spectroscopic techniques today rely on time-resolved measurements under short excitation pulses. Instead of using a chopped pump excitation, or ultrafast optical pulses, we expand on and apply the previously developed set of frequency domain methods to analyze the population level dynamics in rare-earth-doped media. By identifying the full frequency response of the gain medium, this method ca... View full abstract»

• ### Dual-Wavelength Temporal Dynamics of a Gain-Switched 2-μm Tm$^{3}$+:Lu$_{2}$O$_{3}$ Ceramic Laser

Publication Year: 2018, Page(s): 1
| |PDF (2074 KB)

We provide a detailed experimental investigation of the energy efficiency and rich temporal dynamics of a gain-switched 2-μm Tm$^{3}$:Lu$_{2}$O$_{3}$ ceramic laser pumped near 800 nm. A tunable Ti$^{3}$:sapphire laser was used to determine the full excitation spectrum and ... View full abstract»

• ### Laser-Active Fibers Doped with Bismuth for a Wavelength Region of 1.6-1.8 μm

Publication Year: 2018, Page(s): 1
| |PDF (2052 KB)

The light sources operating in the spectral range 1600 $times$ 1800 nm are of great interest because of a number of potential scientific and practical applications. This stimulates a search for effective laser media for this wavelength region. Recent progress in the studying of Bi-doped fibers is related to the development of bismuth-doped high-germania-core fibers fo... View full abstract»

• ### Exploring the Emergence of the Self-Q-Switching in Diode-pumped Yb:KGW Monolithic Lasers

Publication Year: 2018, Page(s): 1
| |PDF (625 KB)

We perform through experiments to explore the key factors for the emergence of self-Q-switching phenomenon in diode-pumped Yb:KGW lasers. In addition to the output transmission, it is found that the mode-to-pump size ratio is a critical factor leading to the self-Q-switching. The region of the cavity mode volume without overlapping the pump volume plays a role of modulation loss to result in self-... View full abstract»

• ### Ion implantation in silicon for trimming the operating wavelength of ring resonators

Publication Year: 2018, Page(s): 1
| |PDF (976 KB)

In recent years, we have presented results on the development of erasable gratings in silicon to facilitate wafer scale testing of photonics circuits via ion implantation of germanium. Similar technology can be employed to control the operating wavelength of ring resonators, which is very sensitive to fabrication imperfections. Ion implantation into silicon causes radiation damage resulting in a r... View full abstract»

• ### An Overview On Yb-doped Transparent Polycrystalline Sesquioxides Laser Ceramics

Publication Year: 2018, Page(s): 1
| |PDF (2112 KB)

This review is devoted to summarizing and discussing the scientific progress achieved during the past decade in diode-pumped ytterbium-doped solid-state lasers. The output radiation centered on the 1-μm region is of particular interest for the well-known applications of previously developed Nd3+ lasers. Several hosts have been studied and tested in recent years. Due to the enormous number o... View full abstract»

• ### Organic Phototransistors with Chemically Doped Conjugated Polymer Interlayers for Visible and Near Infrared Light Detection

Publication Year: 2018, Page(s): 1
| |PDF (787 KB)

Organic phototransistors were fabricated by inserting the patterned layers of chemically-doped conjugated polymer, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS), between the gate electrodes and the gate-insulating layers in order to enable detection of both visible and near infrared (NIR) lights. The transistor performance in the dark was slightly improved by the presence of ... View full abstract»

• ### Realizing High-Pulse-Energy Large-Angular-Momentum Beams by Astigmatic Transformation of Geometric Modes in an Nd:YAG/Cr$^{4+}$:YAG Laser

Publication Year: 2018, Page(s): 1
| |PDF (789 KB)

An off-axis pumped Nd:YAG/Cr4+:YAG laser under different degenerate cavity conditions have been thoroughly studied to generate high-pulse-energy geometric modes for further beam transformation. Because of the employment of Nd:YAG gain crystal provides a flexible choice of cavity length to achieve efficient passively Q-switched (PQS) operation, various PQS geometric modes with stable spatial struct... View full abstract»

• ### Super-resolution Photoacoustic Microscopy Using Near-field Localization by a Plasmonic Metal Nanoaperture: A Simulation Study

Publication Year: 2018, Page(s): 1
| |PDF (855 KB) |  Media

Super-resolution microscopy (SRM) is becoming increasingly important to study nanoscale biological structures. Two most widely used devices for SRM are super-resolution fluorescence microscopy (SRFM) and electron microscopy (EM). For biological living samples, however, SRFM is not preferred since it requires exogenous agents and EM is not preferred since vacuum is required for sample preparation. ... View full abstract»

• ### Conjugate transformation for dispersion compensation in optical coherence tomography imaging

Publication Year: 2018, Page(s): 1
| |PDF (908 KB)

In optical coherence tomography (OCT), the sample dispersion tends to increase the signal width and hence lower down the resolution, resulting in serious image quality degradation, especially for imaging over a large depth range or media with large dispersion coefficient. In this letter, instead of the conventional Fourier transformation for dispersion compensation that can compensate the image on... View full abstract»

• ### Low-Threshold Diode-Pumped 2.3-μ Tm<sup>3+</sup>:YLF Lasers

Publication Year: 2018, Page(s): 1
| |PDF (663 KB)

We demonstrate low-threshold diode-pumped operation of a continuous-wave Tm3+:YLF laser near 2.3 μand provide a detailed experimental investigation of its lasing characteristics. A narrow-line, tunable Ti3+:sapphire laser was first used to measure the excitation spectrum and investigate the absorption saturation behavior of the 1.5 at.% Tm3+:YLF gain medium. A single-mode, 120-mW laser diod... View full abstract»

• ### Characterization of dark soliton sidebands in all-normal-dispersion fiber lasers

Publication Year: 2017, Page(s): 1
| |PDF (935 KB)

We experimentally investigated the spectral sidebands formation in all-normal dispersion fiber lasers. It was found that the sidebands always appear in pair, in a spectral configuration symmetric to the laser emission wavelength. Although the positions of the sidebands are independent of the laser intensity, they varied with the total cavity dispersion. With the help of numerical simulations, we d... View full abstract»

• ### Modeling errors compensation with total least squares for limited data photoacoustic tomography

Publication Year: 2017, Page(s): 1
| |PDF (3458 KB)

The limited data photoacoustic image reconstruction problem is typically solved using either weighted or ordinary least squares (LS), with regularization term being added for stability, which account only for data imperfections (noise). Numerical modeling of acoustic wave propagation requires discretization of imaging region and is typically developed based on many assumptions, such as speed of so... View full abstract»

• ### Single-Frequency Fiber Amplifiers for Next-Generation Gravitational Wave Detectors

Publication Year: 2017, Page(s): 1
| |PDF (759 KB)

At the beginning of 2016 the first direct detection of a gravitational wave by a laser-based Michelson interferometer has been reported. So far, the number of confirmed detections has raised to three and will certainly increase further. Thereby, mankind has an amazing new tool to observe and study the universe, namely by gravitational wave astronomy. However, in order to develop their full potenti... View full abstract»

• ### A Review of Magneto-Optical Microstructure Devices at Terahertz Frequencies

Publication Year: 2017, Page(s): 1
| |PDF (3175 KB)

Recent researches on magneto-optical microstructure devices in terahertz (THz) regime have been reviewed. Some magneto-optical materials responded at THz frequency range were introduced. Based on these magneto-optical materials, MO microstructures devices were reviewed, including magnetic photonic crystal, magneto-plasmonics and magneto-metasurface all in the submillimetre scale. These devices can... View full abstract»

• ### Generation of Mode-locked Ytterbium doped fiber ring laser using few-layer black phosphorus as a saturable absorber

Publication Year: 2017, Page(s): 1
| |PDF (692 KB)

We demonstrate the generation of mode-locked pulses from a double-clad ytterbium-doped fiber laser (YDFL) employing a saturable absorber (SA) made of a few layers of black phosphorus (BP). The BP SA was prepared by mechanically exfoliating BP crystal and spreading the acquired BP flakes on a piece of scotch tape. The tape was then sandwiched between two ferrules and incorporated in a YDFL cavity t... View full abstract»

• ### Surface plasmon resonance assisted simultaneous bio and gas sensing in visible range

Publication Year: 2017, Page(s): 1
| |PDF (495 KB)

## 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.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof. José Capmany
Universitat Politècnica de València, Spain Photonics Research Labs, ITEAM Research Institute
Virginia Polytechnic Institute & State University