Results 31 to 40 of about 2,541,468 (293)

The Investigation on Ultrafast Pulse Formation in a Tm–Ho-Codoped Mode-Locking Fiber Oscillator

open access: yesMolecules, 2021
We experimentally investigate the formation of various pulses from a thulium–holmium (Tm–Ho)-codoped nonlinear polarization rotation (NPR) mode-locking fiber oscillator.
Jingcheng Shang   +6 more
doaj   +1 more source

Noise investigation of CW and mode-locked harmonic cavity nanolasers

open access: yesOptics Express, 2022
We theoretically investigate the noise properties of harmonic cavity nanolasers by introducing a model of coupled equations of evolution of the modes, taking spontaneous emission into account. This model is used to predict the noise among the nanolaser Hermite-Gaussian modes, both in continuous wave and mode-locked regimes. In the first case, the laser
Yifan Sun   +7 more
openaire   +3 more sources

Temporal Cavity Soliton Interaction in Passively Mode-Locked Semiconductor Lasers

open access: yesOptics, 2023
Weak interactions of temporal cavity solitons resulting from gain saturation and recovery in a delay differential model of a long cavity semiconductor laser were studied numerically and analytically using an asymptotic approach.
Andrei G. Vladimirov
doaj   +1 more source

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

A hybrid mode locked laser as millimetre wave modulated data source for radio-over-fiber systems [PDF]

open access: yes, 2009
The paper presents a characterisation of a hybrid mode locked laser under external injection locking. It shows how such a system can be used to transmit baseband data without the requirement of an external ...
Cryan, MJ   +3 more
core   +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

Harmonic Mode-Locking in Monolithic Semiconductor Lasers

open access: yes, 2022
We study both theoretically and experimentally typical operation regimes of 40 GHz monolithic mode-locked lasers. The underlying Traveling Wave Equation model reveals quantitative agreement for characteristics of the fundamental mode-locking as pulse ...
Bandelow, U.   +3 more
core   +1 more source

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  

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