Results 21 to 30 of about 60,955 (295)

High-speed pulse train amplification in semiconductor optical amplifiers with optimized bias current [PDF]

open access: yes, 2017
In this paper, we have experimentally investigated the optimized bias current of semiconductor optical amplifiers (SOAs) to achieve high-speed input pulse train amplification with high gain and low distortion.
Ghafouri-Shiraz, H.   +3 more
core   +1 more source

Room-Temperature Continuous-Wave Vertical-Cavity Single-Quantum-Well Microlaser Diodes [PDF]

open access: yes, 1989
Room-temperature continuous and pulsed lasing of vertical-cavity, single-quantum-well, surface-emitting microlasers is achieved at ~983nm. The active Ga[sub][0-8]In[sub][0-2]As single quantum well is 100 [angstroms] thick.
Florez, L. T.   +5 more
core   +1 more source

Inhomogeneous Gain Saturation in EDF: Experiment and Modeling [PDF]

open access: yes, 2011
Erbium-Doped Fiber Amplifiers can present holes in spectral gain in Wavelength Division Multiplexing operation. The origin of this inhomogeneous saturation behavior is still a subject of controversy.
Boivin, David   +4 more
core   +3 more sources

Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers

open access: yesMolecules, 2021
In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm.
Wenxi Pei   +5 more
doaj   +1 more source

Coherent beam combining with multilevel optical phase-locked loops [PDF]

open access: yes, 2007
Coherent beam combining (CBC) technology holds the promise of enabling laser systems with very high power and near-ideal beam quality. We propose and demonstrate a novel servo system composed of multilevel optical phase lock loops.
Aflatouni, Firooz   +6 more
core   +1 more source

Transverse Bragg resonance laser amplifier [PDF]

open access: yesOptics Letters, 2003
We propose and analyze a new type of optical amplifier that is formed by addition of gain in the periodic cladding of a transverse Bragg resonance waveguide [Opt. Lett. 27, 936 (2002)]. Using the coupled-wave formalism, we calculate the mode profiles, the exponential gain constant, and, for comparison, the gain enhancement compared with those of ...
Amnon, Yariv   +2 more
openaire   +2 more sources

Wavelength Scaling of Laser Wakefield Acceleration for the EuPRAXIA Design Point

open access: yesInstruments, 2019
Scaling the particle beam luminosity from laser wakefield accelerators to meet the needs of the physics community requires a significant, thousand-fold increase in the average power of the driving lasers.
Craig W. Siders   +7 more
doaj   +1 more source

Ultrafast Fiber Technologies for Compact Laser Wake Field in Medical Application

open access: yesPhotonics, 2022
Technologies, performances and maturity of ultrafast fiber lasers and fiber delivery of ultrafast pulses are discussed for the medical deployment of laser-wake-field acceleration (LWFA).
Weijian Sha   +2 more
doaj   +1 more source

Suppression of stimulated Brillouin scattering in optical fibers using a linearly chirped diode laser [PDF]

open access: yes, 2012
The output of high power fiber amplifiers is typically limited by stimulated Brillouin scattering (SBS). An analysis of SBS with a chirped pump laser indicates that a chirp of 2.5 × 10^(15) Hz/s could raise, by an order of magnitude, the SBS threshold ...
Cahill, J. P.   +7 more
core   +1 more source

2-kW Average Power CW Phase-Conjugate Solid-State Laser [PDF]

open access: yes, 2007
We have demonstrated stable operation of a 2-kW Yb:YAG phase-conjugate master oscillator power amplifier (PC-MOPA) laser system with a loop phase-conjugate mirror (LPCM). This is the first demonstration of a continuous wave (CW)-input LPCM MOPA operating
Baltimore, Robert S.   +8 more
core   +1 more source

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