Nonlinear spectrally narrowed fiber amplifier

摘要

A fiber amplifier system including at least one seed source providing an optical seed beam and a harmonic driver providing a sinusoidal drive signal at a predetermined frequency. The system also includes a harmonic phase modulator that receives the seed beam and the drive signal, where the harmonic phase modulator frequency modulates the seed beam using the drive signal so as to remove optical power from a zeroth-order frequency of the seed beam and create sidebands separated by the frequency of the drive signal. A dispersion element receives the frequency modulated seed beam and provides temporal amplitude modulation to the seed beam and a nonlinear fiber amplifier receives the amplitude modulated seed beam from the dispersion element and amplifies the seed beam, where the dispersion element and the fiber amplifier combine to remove optical power from the sidebands and put optical power back into the zeroth-order frequency.

主权项

1. A fiber amplifier system comprising:
at least one seed source providing an optical seed beam; a harmonic driver providing a sinusoidal drive signal at a predetermined frequency; a harmonic phase modulator responsive to the seed beam and the drive signal, said harmonic phase modulator frequency modulating the seed beam using the drive signal so as to remove optical power from a zeroth-order frequency of the seed beam and create sideband frequencies that are separated by the frequency of the drive signal; a first dispersion element responsive to the frequency modulated seed beam and providing temporal amplitude modulation of the seed beam; and a nonlinear fiber amplifier receiving the amplitude modulated seed beam from the first dispersion element and amplifying the seed beam, wherein the first dispersion element and the fiber amplifier combine to remove optical power from the sidebands and put optical power back into the zeroth-order frequency of the beam so as to suppress stimulated Brillouin scattering (SBS).