Beam cleaning of an incoherent laser via plasma Raman amplification

doi:10.1063/1.4997246

Title: Beam cleaning of an incoherent laser via plasma Raman amplification

Abstract

We show that backward Raman amplification in plasma can efficiently compress a temporally incoherent pump laser into an intense coherent amplified seed pulse, provided that the correlation time of the pump is longer than the inverse plasma frequency. One analytical theory for Raman amplification using pump beams with different correlation functions is developed and compared to numerical calculations and particle-in-cell simulations. Since incoherence on scales shorter than the instability growth time suppresses spontaneous noise amplification, we point out a broad regime where quasi-coherent sources may be used as efficient low-noise Raman amplification pumps. As the amplified seed is coherent, Raman amplification provides an additional a beam-cleaning mechanism for removing incoherence. At near-infrared wavelengths, finite coherence times as short as 50 fs allow amplification with only minor losses in efficiency.

Authors:

^[1];

^[2]; Mikhailova, Julia M. ^[1];

^[2]

Princeton Univ., NJ (United States). Dept. of Mechanical and Aerospace Engineering
Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences

Publication Date:: 2017-09-25

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1395338

Grant/Contract Number:: 1506372; FA9550-15-1-0391; NA0002948

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 24; Journal Issue: 10; Journal ID: ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Edwards, Matthew R., Qu, Kenan, Mikhailova, Julia M., and Fisch, Nathaniel J. Beam cleaning of an incoherent laser via plasma Raman amplification.  United States: N. p., 2017. 
        Web.  doi:10.1063/1.4997246.

Copy to clipboard


                    Edwards, Matthew R., Qu, Kenan, Mikhailova, Julia M., & Fisch, Nathaniel J. Beam cleaning of an incoherent laser via plasma Raman amplification.  United States.  doi:10.1063/1.4997246.

Copy to clipboard


                    Edwards, Matthew R., Qu, Kenan, Mikhailova, Julia M., and Fisch, Nathaniel J. Mon .  
        "Beam cleaning of an incoherent laser via plasma Raman amplification".  United States.  doi:10.1063/1.4997246.  https://www.osti.gov/servlets/purl/1395338.

Copy to clipboard


                    
@article{osti_1395338,

  title        = {Beam cleaning of an incoherent laser via plasma Raman amplification},

  author       = {Edwards, Matthew R. and Qu, Kenan and Mikhailova, Julia M. and Fisch, Nathaniel J.},

  abstractNote = {We show that backward Raman amplification in plasma can efficiently compress a temporally incoherent pump laser into an intense coherent amplified seed pulse, provided that the correlation time of the pump is longer than the inverse plasma frequency. One analytical theory for Raman amplification using pump beams with different correlation functions is developed and compared to numerical calculations and particle-in-cell simulations. Since incoherence on scales shorter than the instability growth time suppresses spontaneous noise amplification, we point out a broad regime where quasi-coherent sources may be used as efficient low-noise Raman amplification pumps. As the amplified seed is coherent, Raman amplification provides an additional a beam-cleaning mechanism for removing incoherence. At near-infrared wavelengths, finite coherence times as short as 50 fs allow amplification with only minor losses in efficiency.},

  doi          = {10.1063/1.4997246},

  journal      = {Physics of Plasmas},

  number       = 10,

  volume       = 24,

  place        = {United States},

  year         = {2017},

  month        = {9}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

DOI: 10.1063/1.4997246

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Compression of amplified chirped optical pulses
journal, October 1985

Strickland, Donna; Mourou, Gerard
Optics Communications, Vol. 55, Issue 6, p. 447-449
DOI: 10.1016/0030-4018(85)90151-8

Similar Records in DOE PAGES and OSTI.GOV collections:

Characterizing laser-plasma ion accelerators driving an intense neutron beam via nuclear signatures

Journal Article Favalli, Andrea ; Guler, Nevzat ; Henzlova, Daniela Constance ; ... - Scientific Reports

Compact, bright neutron sources are opening up several emerging applications including detection of nuclear materials for national security applications. At Los Alamos National Laboratory, we have used a short-pulse laser to accelerate deuterons in the relativistic transparency regime. These deuterons impinge on a beryllium converter to generate neutrons. During the initial experiments where these neutrons were used for active interrogation of uranium and plutonium, we observed β-delayed neutron production from decay of ⁹Li, formed by the high-energy deuteron bombardment of the beryllium converter. Analysis of the delayed neutrons provides novel evidence of the divergence of the highest energy portion ofmore »« less
DOI: 10.1038/s41598-019-39054-z

Full Text Available
An ultra-high gain and efficient amplifier based on Raman amplification in plasma

Journal Article Vieux, G. ; Cipiccia, S. ; Grant, D. W. ; ... - Scientific Reports

Raman amplification arising from the excitation of a density echelon in plasma could lead to amplifiers that significantly exceed current power limits of conventional laser media. Here we show that 1–100 J pump pulses can amplify picojoule seed pulses to nearly joule level. The extremely high gain also leads to significant amplification of backscattered radiation from “noise”, arising from stochastic plasma fluctuations that competes with externally injected seed pulses, which are amplified to similar levels at the highest pump energies. The pump energy is scattered into the seed at an oblique angle with 14 J sr ^-1, and net gainsmore »« less
Cited by 4
DOI: 10.1038/s41598-017-01783-4

Full Text Available
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

Journal Article Tzeferacos, Petros ; Rigby, A. ; Bott, A. ; ... - Physics of Plasmas

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputermore »« less
Cited by 6
DOI: 10.1063/1.4978628

Full Text Available
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

Journal Article Tzeferacos, P. ; Rigby, A. ; Bott, A. ; ... - Physics of Plasmas

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputermore »« less
Cited by 6
DOI: 10.1063/1.4978628

Full Text Available
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

Journal Article Tzeferacos, P. ; Rigby, A. ; Bott, A. ; ... - Physics of Plasmas

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputermore »« less
Cited by 6
DOI: 10.1063/1.4978628

Full Text Available

Similar Records

Title: Beam cleaning of an incoherent laser via plasma Raman amplification

Abstract

Citation Formats

Compression of amplified chirped optical pulses journal, October 1985

Compression of amplified chirped optical pulses
journal, October 1985