Multimode fibers have been proposed for mitigating nonlinear effects in high-power fiber amplifiers, allowing for significant power scaling. Abstract: We propose a method for controlling modal gain in...
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We achieved 500 W output power of an MMF amplifier with 1 kHz linewidth. Here, we present an efficient method of full-field modulation for two orthogonal polarizations of an input signal,
Here we explore a highly multimode fiber amplifier, where stimulated Brillouin scattering is greatly suppressed due to reduction of light intensity in a large fiber core and broadening of...
Here, we simultaneously suppressed detrimental SBS and focused the output beam in a highly multimode nonlinear fiber amplifier using input wavefront shaping. Our MMF amplifier is free of
The numerical results validate our approach of utilizing highly multimode excitation to mitigate nonlinear effects in high-power fiber amplifiers and performing input wavefront shaping to
We demonstrate the scaling of femtosecond fiber amplifiers by mode area through regenerative amplification in multimode fiber. Initial results for high-gain amplification will be presented and
Here, we study theoretically using a highly multimode fiber amplifier with many-mode excitation for efficient suppression of thermo-optical nonlinearity and instability.
The peak power performance of ultrafast fiber lasers scales with fiber mode area, but large fibers host multiple modes that are difficult to control. We demonstrate a technique for single-mode operation of
Here, we simultaneously suppressed detrimental SBS and focused the output beam in a highly multimode nonlinear fiber amplifier using input wavefront
Two major types of multimode fiber amplifiers, that is, the MM-EDFAs and MFRAs are introduced with mathematical models to characterize the beam propagation and the optimization
Abstract: We propose a method for controlling modal gain in a multimode Erbium-doped fiber amplifier (MM-EDFA) by tuning the mode content of a multimode pump. By adjusting the powers and
Here we develop a tractable numerical model to simulate light propagation in narrowband, highly multimode fiber amplifiers, which takes into account gain saturation, pump