Results 41 to 50 of about 25,220 (299)

Low pump threshold CVD graphene based passively harmonic mode‐locked fibre laser

open access: yesElectronics Letters, 2017
A low pump threshold passively harmonic mode‐locked fibre laser is demonstrated. The key component is a chemical vapour deposition grown graphene saturable absorber to enable higher order harmonic mode‐locking (HML) of the fibre laser with good output ...
Kin Kee Chow
doaj   +1 more source

A Dual-Wavelength Rational Harmonic Mode-Locked Fiber Ring Laser With Different Repetition Frequencies

open access: yesIEEE Photonics Journal, 2015
A dual-wavelength rational harmonic mode-locked fiber ring laser with different repetition frequencies is theoretically analyzed and experimentally demonstrated.
Yuejiao Zi   +6 more
doaj   +1 more source

Stable Mode-Locked Operation With High Temperature Characteristics of a Two-Section InGaAs/GaAs Double Quantum Wells Laser

open access: yesIEEE Access, 2021
A monolithic two-section InGaAs/GaAs double quantum wells (DQWs) mode-locked laser (MLL) emitting at 1.06 μm is demonstrated. Stable mode locking operation is achieved up to 80 °C.
Zhongliang Qiao   +11 more
doaj   +1 more source

2 μm soliton lasers in a bidirectional nonlinear polarization evolution Tm3+-doped fiber oscillator

open access: yesResults in Physics, 2022
We experimentally demonstrate a novel 2 μm soliton laser using a bidirectional nonlinear polarization evolution mode-locked Tm3+-doped fiber oscillator.
Ni Feng   +6 more
doaj   +1 more source

Cladding-pumped passive harmonically mode-locked fiber laser

open access: yesOptics Letters, 1996
A passive harmonically mode-locked fiber laser cladding pumped by a broad-area diode-laser array is described. Harmonic mode locking is obtained in a frequency range from 33.3 to 128.6 MHz, where the higher frequency limit is imposed because of insufficient available pump power.
Fermann, M.E., Minelly, J.D.
openaire   +4 more sources

Transient multi-soliton dynamics between adjacent-order harmonic mode-locking states in a hybrid mode-locked fiber laser

open access: yesResults in Physics, 2023
The buildup dynamics from noise-seeded relaxation oscillation to harmonic mode-locking (HML) solitons generation have been well investigated in ultrafast fiber lasers.
Jie Chen   +5 more
doaj   +1 more source

Injection locking at zero field in two free layer spin-valves [PDF]

open access: yes, 2013
This paper predicts the possibility to achieve synchronization (via injection locking to a microwave current) of spin-transfer torque oscillators based on hybrid spin-valves composed by two free layers and two perpendicular polarizers at zero bias field.
Azzerboni, Bruno   +3 more
core   +2 more sources

First harmonic injection locking of 24-GHz-oscillators [PDF]

open access: yesAdvances in Radio Science, 2003
An increasing number of applications is proposed for the 24 GHz ISM-band, like automotive radar systems and short-range communication links. These applications demand for oscillators providing moderate output power of a few mW and moderate frequency ...
M. R. Kühn, E. M. Biebl
doaj  

Passive harmonic mode-locking in a fiber laser with nonlinear polarization rotation [PDF]

open access: yes, 2006
On basis of numerical simulation and analytical treatment, we investigate the multiple pulse passive mode-locking of a fiber laser with nonlinear loss due to the nonlinear polarization rotation technique.
A. Komarov, F. Sanchez, H. Leblond
core   +2 more sources

Mode-locking via dissipative Faraday instability

open access: yesNature Communications, 2016
Dissipative Faraday instability by periodic zig-zag modulation of spectral losses can lead to pattern formation in variety of systems. Here, the authors employ this nonlinear instability as a technique to achieve high-order harmonic mode-locking in a ...
Nikita Tarasov   +4 more
doaj   +1 more source

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