Multifrequency Raman amplifiers

Ido Barth, Nathaniel J. Fisch

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In its usual implementation, the Raman amplifier features only one pump carrier frequency. However, pulses with well-separated frequencies can also be Raman amplified while compressed in time. Amplification with frequency-separated pumps is shown to hold even in the highly nonlinear, pump-depletion regime, as derived through a fluid model, and demonstrated via particle-in-cell simulations. The resulting efficiency is similar to single-frequency amplifiers, but, due to the beat-wave waveform of both the pump lasers and the amplified seed pulses, these amplifiers feature higher seed intensities with a shorter spike duration. Advantageously, these amplifiers also suffer less noise backscattering, because the total fluence is split between the different spectral components.

Original languageAmerican English
Article number033201
JournalPhysical Review E
Issue number3
StatePublished - 8 Mar 2018

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© 2018 American Physical Society.


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