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FIBER AMPLIFIER SYSTEM RESISTANCE TO NONLINEAR SPECTRAL BROADENING AND DECOHERENCE
FIBER AMPLIFIER SYSTEM RESISTANCE TO NONLINEAR SPECTRAL BROADENING AND DECOHERENCE
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机译:纤维放大器系统耐受非线性谱扩展和脱干
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摘要
A method for reducing nonlinear frequency shifts and suppressing stimulated Brillouin scattering (SBS) in a fiber laser amplifier system. The method includes providing a seed beam having a certain wavelength and frequency modulating the seed beam with an RF waveform to spectrally broadening the seed beam, where the RF waveform is a relatively slow-speed waveform having a large modulation depth. The method also includes amplifying the frequency modulated seed beam with an amplifier having a large nonlinear phase shift and exhibiting frequency modulation (FM) to amplitude modulation (AM) conversion, where the modulation depth is much larger than the nonlinear phase shift of the amplifier.
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