Spectral broadening in narrow linewidth, continuous-wave high power fiber amplifiers
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.07.005
Abstract: Abstract We present an investigation on the spectrum broadening in continuous-wave, sub-nanometer linewidth high power fiber amplifiers caused by the multiple four-wave mixing (FWM) process. The spectrum broadening employing two different types of narrow linewidth… read more here.
Keywords: seed; high power; fiber amplifiers; continuous wave ... See more keywords
Optimized radiation-hardened erbium doped fiber amplifiers for long space missions
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4981532
Abstract: In this work, we developed and exploited simulation tools to optimize the performances of rare earth doped fiber amplifiers (REDFAs) for space missions. To describe these systems, a state-of-the-art model based on the rate equations… read more here.
Keywords: fiber amplifiers; radiation hardened; space; doped fiber ... See more keywords
Long-term mode shape degradation in large mode area Yb-doped pulsed fiber amplifiers
Sign Up to like & getrecommendations! Published in 2017 at "Laser Physics Letters"
DOI: 10.1088/1612-202x/14/1/015102
Abstract: Experimental observation of long-term output mode shape degradation in pulsed Yb-doped fiber amplifiers is reported for the first time. The process occurs in large mode area Yb-doped fibers and is caused by the formation of… read more here.
Keywords: mode; fiber amplifiers; long term; large mode ... See more keywords
Seeding High Brightness Fiber Amplifiers With Multi-Phase Coded Signal Modulation for SBS Effect Management
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3007413
Abstract: We propose a new modulation approach based on multi-phase coded signal (MPCS) to increase stimulated Brillouin scattering (SBS) threshold in high power narrow-linewidth fiber amplifiers. To investigate the SBS suppressing capacity of the proposed modulation… read more here.
Keywords: coded signal; modulation; phase coded; fiber amplifiers ... See more keywords
Overlapped pulsed pumping of tandem pumped fiber amplifiers to increase achievable pulse energy
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Quantum Electronics"
DOI: 10.1109/jqe.2017.2657334
Abstract: It has been reported previously that in the regime appropriate for amplifying femtosecond pulses using the chirped pulse amplification technique in Yb-fiber sources that sub-micro-second pulsed tandem pumping not only provides the thermal benefits of… read more here.
Keywords: fiber amplifiers; tandem pumping; pulse; energy ... See more keywords
Transverse-Mode Instability in High-Gain Few-Mode Yb3+-Doped Fiber Amplifiers With a 10-μm Core Diameter With or Without Backward Reflection
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Selected Topics in Quantum Electronics"
DOI: 10.1109/jstqe.2017.2787608
Abstract: Spatio-temporal transverse instability of the fundamental mode in high-gain fiber amplifiers based on a highly Yb 3+-doped few-mode polarization maintaining fiber with a core diameter of 10 μm was studied. Both experimental and theoretical analyses… read more here.
Keywords: high gain; mode; fiber amplifiers; core diameter ... See more keywords
Ytterbium-Doped Fiber Amplifiers Seeded With Superluminescent Light Emitting Diode
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2017.2763981
Abstract: We demonstrate multi-stage ytterbium-doped fiber amplifiers (YDFAs) seeded with a superluminescent light emitting diode (SLED). Laser pulses with four pulse durations, such as 350-ps, 6-ns, 55-ns, and 183-ns (full width half maximum), have been studied.… read more here.
Keywords: fiber amplifiers; doped fiber; light emitting; superluminescent light ... See more keywords
Thermal effects on tapered holmium-doped fiber amplifiers
Sign Up to like & getrecommendations! Published in 2020 at "Optical Engineering"
DOI: 10.1117/1.oe.59.3.036106
Abstract: Abstract. The temperature response of a tapered holmium-doped fiber amplifier and its impact in the performance of fiber lasers and temperature fiber sensors has numerically been analyzed. Different pump schemes and different longitudinal shapes of… read more here.
Keywords: tapered holmium; holmium doped; doped fiber; temperature ... See more keywords
Pump RIN reduction of the TMI threshold powers in Yb-doped kW class fiber amplifiers.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.445322
Abstract: A 3D spatially resolved coupled mode and perturbation analysis for the transverse mode instability threshold powers in Yb-doped fiber amplifiers is extended to include threshold power reduction induced by the pump laser relative intensity noise… read more here.
Keywords: threshold power; threshold powers; powers doped; fiber amplifiers ... See more keywords
Thermal analysis of Yb-doped high-power fiber amplifiers with Al:P co-doped cores.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.007614
Abstract: It has been recently shown that photodarkening can significantly reduce the mode instability threshold in high power Yb-doped fiber amplifiers, thus resulting in an even more severe limitation to the scaling of the output average… read more here.
Keywords: high power; fiber amplifiers; power; fiber ... See more keywords
Simulation of 2µm single clad thulium-doped silica fiber amplifiers by characterization of the 3F4 - 3H6 transition.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.026080
Abstract: We report measurements of absorption, gain, and the lifetime of the transition 3H6 - 3F4 for three commercially available thulium-doped single clad silica fibers. These measurements are used in a steady-state simulation of thulium-doped fiber… read more here.
Keywords: single clad; fiber amplifiers; transition; thulium ... See more keywords