Results 21 to 30 of about 41,965 (302)

Noise characterization of a pulse train generated by actively mode-locked lasers [PDF]

open access: yes, 1996
We analyze the entire power spectrum of pulse trains generated by a continuously operating actively mode-locked laser in the presence of noise. We consider the effect of amplitude, pulse-shape, and timing-jitter fluctuations that are characterized by ...
Eliyahu, Danny   +2 more
core   +1 more source

A Mode Locking Theory of the Nyquist Laser

open access: yesConference on Lasers and Electro-Optics, 2016
We derive a master equation for a mode-locked Nyquist laser that can emit a sinc function pulse. To derive the master equation, we used a method involving exponential perturbative expressions for gain, loss, and amplitude modulation, and a flat-top optical filter with edge enhancement.
Masataka, Nakazawa, Toshihiko, Hirooka
openaire   +2 more sources

High Energy Noise-Like Pulse Generation from a Mode-Locked Thulium-Doped Fiber Laser at 1.7 μm

open access: yesIEEE Photonics Journal, 2019
Thulium-doped fiber laser (TDFL) is a versatile platform that can be engineered to produce laser sources with desired performance that target a vast number of applications, however its operation in the 1.7-μm region is still underdeveloped owing ...
Can Li, Cihang Kong, Kenneth K. Y. Wong
doaj   +1 more source

Asynchronous Harmonic Mode Locking in an All-Normal Dispersion Yb-Doped Fiber Laser

open access: yesIEEE Photonics Journal, 2013
We present detailed experimental and theoretical results to demonstrate the possibility of asynchronous harmonic mode locking in an all-normal dispersion fiber laser.
Sheng-Min Wang   +3 more
doaj   +1 more source

Phase-locking characteristics of coupled ridge-waveguide InP/InGaAsP diode lasers [PDF]

open access: yes, 1984
The phase-locking characteristics of two coupled, ridge waveguide InP/InGaAsP diode lasers emitting at 1.2 µm were investigated experimentally. The phase locking of the lasers was verified by the observation of phase-locked modes (supermodes) in the ...
Kapon, E.   +5 more
core   +1 more source

Dark solitons in mode-locked lasers [PDF]

open access: yesOptics Letters, 2011
Dark soliton formation in mode-locked lasers is investigated by means of a power-energy saturation model which incorporates gain and filtering saturated with energy, and loss saturated with power. It is found that general initial conditions evolve into dark solitons under appropriate requirements also met in the experimental observations. The resulting
Ablowitz, M.J.   +3 more
openaire   +5 more sources

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

open access: yesIEEE Photonics Journal, 2022
Optical metasurfaces, i.e., thin planar structures with subwavelength metal or dielectric unit cells, have attracted great interest due to their intriguing capabilities of shaping light in both linear and nonlinear regimes.
Zhijin Chen   +8 more
doaj   +1 more source

Phase-locked arrays of unstable resonator semiconductor lasers [PDF]

open access: yes, 1986
A phase-locked array of several unstable resonator semiconductor lasers is demonstrated.
Salzman, J., Yariv, A.
core   +1 more source

Wavelength-Switchable Dissipative Soliton Fiber Laser With a Chirped Fiber Grating Stop-Band Filter

open access: yesIEEE Photonics Journal, 2013
We report a wavelength-switchable single-polarization dissipative soliton (DS) mode-locked fiber laser using a chirped fiber Bragg grating (FBG) for spectral filtering. The chirped FBG, when inserted into the ring cavity, provides a stopband from 1045 nm
Lei Zhang, Yan Feng, Xijia Gu
doaj   +1 more source

Coupling mechanism of gain-guided integrated semiconductor laser arrays [PDF]

open access: yes, 1984
It is shown that a gain-guided laser array couples via propagating fields rather than the evanescent mode coupling typically responsible for directional coupling in passive (directional couplers) and active (laser array) devices. We show that these phase-
Kapon, E.   +4 more
core   +1 more source

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