# IEEE Journal of Selected Topics in Quantum Electronics

## Filter Results

Displaying Results 1 - 25 of 44
• ### Laser-Active Fibers Doped With Bismuth for a Wavelength Region of 1.6–1.8 μm

Publication Year: 2018, Article Sequence Number: 0902415
| | PDF (2013 KB) | HTML

The light sources operating in the spectral range 1600-1800 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 bismuth (Bi)-doped fibers is related to the development of Bi-doped high-germania-core fibers for the mentioned wavelength region... View full abstract»

• ### Coherent Beam Combination of Ultrafast Fiber Lasers

Publication Year: 2018, Article Sequence Number: 0902709
| | PDF (609 KB) | HTML

The performance of fiber laser systems has drastically increased over recent decades, which has opened up new industrial and scientific applications for this technology. However, currently a number of physical effects prevents further power scaling. Coherent combination of beams from multiple emitters has been established as a power scaling technique beyond these limitations. It is possible to inc... 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, Article Sequence Number: 0902807
| | PDF (1546 KB) | HTML

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

• ### A Compact High-Average-Power Femtosecond Fiber-Coupled Two-Color CPA System

Publication Year: 2018, Article Sequence Number: 0902905
| | PDF (320 KB) | HTML

A compact, high-average-power, sub-picosecond, two-color (1025 and 1085 nm) fiber-coupled, chirped pulse amplification Yb:fiber laser is reported. Two colors are selected from a continuum using a chirped fiber Bragg grating, which are then amplified in a two-stage Yb:fiber amplifier system. The preamplifier is fully fiber-coupled, improving significantly the stability and efficiency compared to th... View full abstract»

• ### Highly Efficient Holmium-Doped All-Fiber ∼2.07-μm Laser Pumped by Ytterbium-Doped Fiber Laser at ∼1.13 μm

Publication Year: 2018, Article Sequence Number: 0903108
| | PDF (1846 KB) | HTML

We report a 2.07-μm Holmium-doped all-fiber laser (HDFL) pumped by a 1.13-μm Ytterbium-doped fiber laser (YDFL). Home-made alumino-germano-silicate holmium-doped fiber (HDF) served here as an active medium, optimized in terms of chemical composition and co-dopants' concentrations. Laser action at 2.07 μm was assessed in simple Fabry-Perot cavity, formed by a couple of home-mad... View full abstract»

• ### Power Scaling of Narrow-Linewidth Fiber Amplifier Seeded by Yb-Doped Random Fiber Laser

Publication Year: 2018, Article Sequence Number: 0903208
| | PDF (3360 KB) | HTML

In this paper, we propose and experimentally demonstrate a 2.4-kW narrow-linewidth amplifier seeded by a random fiber laser (RFL) with Yb-doped fiber gain. The high power lasing is realized by employing a master oscillator power amplifier (MOPA) configuration, a full width at half-maximum linewidth of 0.23 nm and a beam quality of M 2 = 1.28 are obtained at the maximum output. Theoretic... View full abstract»

• ### Orthogonally Polarized Self-Mode-Locked Lasers With Repetition Rate Multiplication up to Hundreds of Gigahertz: Observation of Temporal Carpets

Publication Year: 2018, Article Sequence Number: 1101806
| | PDF (1369 KB) | HTML

Mode-locked laser sources with high repetition rates in the range of 10-1000 GHz are of considerable interest in modern communications, optical metrology, and photonic applications. Currently, developed laser systems generally suffer from the hardware complexity and energy loss. Here, we demonstrate a compact robust scheme based on a self-mode-locked monolithic Yb:KGW laser with external feedback ... View full abstract»

• ### Eye-Safe Picosecond Solid-State Nd:YAG Ceramic Laser at 1.44 μm

Publication Year: 2018, Article Sequence Number: 1101904
| | PDF (381 KB) | HTML

We report on a passively mode-locked Nd:YAG transparent ceramic laser with semiconductor saturable absorber mirror at an eye-safe wavelength of 1.44 μm. With the increase of incident pump power, the laser went through three oscillation stages: Q-switched mode locking (QML), continuous wave mode locking (CWML), QML and remained at 1443 nm single wavelength output. The maximum average output ... View full abstract»

• ### Kerr-Lens Mode-Locked 2-μm Thin-Disk Lasers

Publication Year: 2018, Article Sequence Number: 1102111
| | PDF (3210 KB) | HTML

Thin-disk technology uniquely enables the simultaneous scaling of both average and peak powers, while maintaining an excellent beam profile. It has been widely adopted in the 1-μm region, not only for continuous wave lasers but also for pulsed oscillators and amplifiers. However, the development of 2-μm thin-disk lasers is still at a very early stage, with passive mode locking having... View full abstract»

• ### Topological Insulators for Mode-Locking of 2-μm Fiber Lasers

Publication Year: 2018, Article Sequence Number: 1102208
| | PDF (3829 KB) | HTML

We performed density functional theory calculations for the topological insulators (TIs) of Bi2Se3 and CoSb3 (skutterudite) in a comparison with Bi2Te3 and In2Co4 Sb12 (filled skutterudite) to explore whether the former TIs can serve as saturable-absorption materials for laser mode-locking at the wavelengths of 2 μm and beyond. The calculated electronic-band structures and optical-absorptio... View full abstract»

• ### Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors

Publication Year: 2018, Article Sequence Number: 1102309
| | PDF (3834 KB) | HTML

In this paper, we review the current state and discuss new developments in opto-optical modulation (OOM) of semiconductor elements for frequency comb self-referenced stabilization of ultrafast lasers. This method has been successfully used for carrier-envelope offset (CEO) frequency stabilization of diode-pumped solid-state lasers operating in 1-μm and 1.5-μm regimes, providing high ... View full abstract»

• ### Ultralow Noise Optical Frequency Combs

Publication Year: 2018, Article Sequence Number: 1102413
| | PDF (627 KB) | HTML

The invention of optical frequency combs (OFCs) based on femtosecond (fs) mode-locked lasers has merged laser based spectroscopy with fs-laser technology. OFCs have triggered quantum leaps of advancement in photonics, physics, astronomy, and engineering, while also lending themselves to applications in medical and environmental fields. The key feature of OFCs is their ultrahigh frequency and time ... View full abstract»

• ### Timing Jitter of the Dual-Comb Mode-Locked Laser: A Quantum Origin and the Ultimate Effect on High-Speed Time- and Frequency-Domain Metrology

Publication Year: 2018, Article Sequence Number: 1102610
| | PDF (2648 KB) | HTML

We study on the timing jitter characteristics of a passively mode-locked dual-wavelength dual-comb Er-fiber laser that generates two femtosecond optical frequency combs with an offset repetition rate in a shared cavity. The relative timing jitter is characterized directly in the time domain with tens of attoseconds precision by utilizing the intrinsic asynchronous optical sampling process between ... View full abstract»

• ### Multiwavelength, Sub-Nanosecond Yb:YAG/Cr4+:YAG/YVO4 Passively Q-Switched Raman Microchip Laser

Publication Year: 2018, Article Sequence Number: 1400108
| | PDF (801 KB) | HTML

We have demonstrated a multiwavelength, sub-nanosecond Yb:YAG/Cr4+:YAG/YVO4 passively Q-switched Raman microchip laser (PQSRML) emitting at 1-1.26 μm. Multiple wavelength Stokes laser radiations at 1123, 1134, 1260 nm and 1079, 1134, 1157, 1260 nm have been obtained at different pump power levels, respectively. The second-order Stokes laser at 1.26 μm increases ... View full abstract»

• ### High-Energy Single-Frequency Millisecond 1336.630-nm Nd:LGGG Amplifier (April 2017)

Publication Year: 2018, Article Sequence Number: 1600106
| | PDF (673 KB) | HTML

We demonstrate a high-energy, single-frequency, and millisecond (ms) 1336.630-nm amplifier with high beam quality and narrow-linewidth simultaneously based on the Nd3+ :(LuX Gd1-X )3 Gas O12 (Nd:LGGG) disordered crystal for the first time. The amplifier system consists of a polarized singlefrequency 1336.630-nm LD oscillator, two-stage Raman f... View full abstract»

• ### Watt-Level Continuous-Wave and Black Phosphorus Passive Q-Switching Operation of Ho3+,Pr 3+:LiLuF4 Bulk Laser at 2.95 μm

Publication Year: 2018, Article Sequence Number: 1600205
| | PDF (372 KB) | HTML

Efficient continuous wave (CW) and passively Q-switched Ho3+,Pr3+:LiLuF4 (Ho,Pr:LLF) laser operating at 2.95 μm were realized using a 1150-nm Raman fiber laser as the pump source. A CW output power as high as 1.15 W, which we believe to be the highest one ever achieved from Ho 3+-doped bulk laser emission around 3 μm, corresponds to an opti... View full abstract»

• ### High Repetition Rate All-Solid-State Pulsed 2 μm Laser Based on Selenide Molybdenum Saturable Absorber

Publication Year: 2018, Article Sequence Number: 1600306
| | PDF (624 KB) | HTML

A kind of saturable absorber (SA) based on layered MoSe2 nanosheets has been fabricated successfully by an ultrasound-assisted liquid phase exfoliation method. The as-prepared MoSe2 SA was characterized and employed as Q-switch in a diode-pumped Tm-doped crystalline all-solid-state laser at around 2 μm. A stable passively Q-switched 2 μm laser with a maximum pul... View full abstract»

• ### Passively Q-Switched Nd:GdVO4 1.3 μm Laser with Few-Layered Black Phosphorus Saturable Absorber

Publication Year: 2018, Article Sequence Number: 1600405
| | PDF (541 KB) | HTML

By using a few-layer black phosphorus (BP) as the saturable absorber (SA), a laser-diode end-pumped stable Q-switched Nd:GdVO4 laser operating at 1.3 μm was realized. A maximum average output power of 452 mW was obtained at 2.22 W absorbed pump power, corresponding to a 34.5% slope efficiency. The shortest pulse width, highest pulse repetition rate, and largest peak power were de... View full abstract»

• ### Expanding Continuous Tuning Range of a CW Single-Frequency Laser by Combining an Intracavity Etalon With a Nonlinear Loss

Publication Year: 2018, Article Sequence Number: 1600505
| | PDF (543 KB) | HTML

Combining intracavity etalon (IE) locked on a laser oscillating mode with a deliberately introduced nonlinear loss, the tuning range of a continuous-wave (CW) single-frequency laser is significantly expanded to transcend the traditional limitation of a free spectral range (FSR) of IE. Due to the action of the nonlinear loss, the frequency of laser oscillating mode can be continuously and smoothly ... View full abstract»

• ### Flexibly Controlling the Power Ratio of Dual-Wavelength SESAM-Based Mode-Locked Lasers With Wedged-Bonded Nd:YVO4/Nd:GdVO4 Crystals

Publication Year: 2018, Article Sequence Number: 1600605
| | PDF (693 KB)

A new diffusion-bonded Nd:YVO4/Nd:GdVO4 hetero-structure crystal with oblique interface between two vanadate materials is exploited to achieve dual-wavelength passively mode-locked laser with a semiconductor saturable absorber mirror. Experimental results show that the power ratio of the two emission wavelengths can be flexibly adjusted by controlling the vertical position of... View full abstract»

• ### Highly Efficient, Compact Tm3+:RE2O3 (RE = Y, Lu, Sc) Sesquioxide Lasers Based on Thermal Guiding

Publication Year: 2018, Article Sequence Number: 1600713
| | PDF (1416 KB)

Cubic sesquioxides, RE2O3, where RE = Y, Lu or Sc, are attractive host crystals for thulium (Tm3+) doping. A comparison of the spectroscopic properties of Tm3+:RE2O3 crystals in terms of transition cross sections and cross-relaxation (CR) efficiency required for efficient upconversion pumping is presented. Thermo-optic properties of... View full abstract»

• ### Realizing High-Pulse-Energy Large-Angular-Momentum Beams by Astigmatic Transformation of Geometric Modes in an Nd:YAG/Cr4+:YAG Laser

Publication Year: 2018, Article Sequence Number: 1600809
| | PDF (992 KB) | HTML

An off-axis pumped Nd:YAG/Cr4+:YAG laser under different degenerate cavity conditions has 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 spat... View full abstract»

• ### Nanosecond Pulse Generation at 2.7 μm From a Passively Q-Switched Er:Y2O 3 Ceramic Laser

Publication Year: 2018, Article Sequence Number: 1600906
| | PDF (446 KB) | HTML

Efficient passively Q-switched Er:Y2O3 ceramic lasers operating at 2.7 μm were demonstrated. Using a semiconductor saturable absorber mirror (SESAM) of 2.4% modulation depth, we achieved 63 ns pulses that are close to the limit set by the cavity length. For 9.5 W of the absorbed pump power, an average output power of 0.88 W was generated with a pulse energy of 17.4 &#x... View full abstract»

• ### Low-Threshold Diode-Pumped 2.3-$mu$ m Tm3+:YLF Lasers

Publication Year: 2018, Article Sequence Number: 1601007
| | PDF (1063 KB) | HTML

We demonstrate low-threshold diode-pumped operation of a continuous-wave Tm3+:YLF laser near 2.3 μm and 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 mediu... View full abstract»

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

Publication Year: 2018, Article Sequence Number: 1601106
| | PDF (989 KB) | HTML

We perform through experiments to explore the key factors for the emergence of a 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 sel... 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.

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