Towards a high efficiency amplifier based on Raman amplification

G Vieux, E Brunetti, S Cipiccia, B Eliasson, B Ersfeld, J P Farmer, M S Hur, N Lemos, G H Welsh, S M Wiggins, X Yang, S R Yoffe, J M Dias, D A Jaroszynski

Research output: Contribution to journalSpecial issue

Abstract

Ultra high power laser amplifier systems based on plasma may provide a pathway to reach petawatt to exawatt powers, vastly exceeding the limitations imposed by the currently low damage threshold of solid state optical elements. In theory unfocused intensities of 1017 W cm−2 could be reached. The Raman amplification scheme has been demonstrated as a promising candidate through the observation of 10% energy transfer efficiency due to amplification of noise, which implies potentially much larger efficiencies. However, controlled amplification of a seed pulse has not hitherto exceeded an efficiency of 7%. Here we discuss several saturation mechanisms that can limit the gain, such as early pump scattering and thermal effects. We show that chirped pulse Raman amplification can mitigate these deleterious effects.
Original languageEnglish
Article number014018
Number of pages6
JournalPlasma Physics and Controlled Fusion
Volume62
Issue number1
DOIs
Publication statusPublished - 27 Nov 2019

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Light amplifiers
Amplification
amplifiers
High power lasers
Optical devices
Thermal effects
Energy transfer
Seed
yield point
pulses
high power lasers
Pumps
Scattering
temperature effects
seeds
Plasmas
energy transfer
pumps
solid state
saturation

Keywords

  • raman amplification
  • laser plasma interaction
  • plasma instability

Cite this

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title = "Towards a high efficiency amplifier based on Raman amplification",
abstract = "Ultra high power laser amplifier systems based on plasma may provide a pathway to reach petawatt to exawatt powers, vastly exceeding the limitations imposed by the currently low damage threshold of solid state optical elements. In theory unfocused intensities of 1017 W cm−2 could be reached. The Raman amplification scheme has been demonstrated as a promising candidate through the observation of 10{\%} energy transfer efficiency due to amplification of noise, which implies potentially much larger efficiencies. However, controlled amplification of a seed pulse has not hitherto exceeded an efficiency of 7{\%}. Here we discuss several saturation mechanisms that can limit the gain, such as early pump scattering and thermal effects. We show that chirped pulse Raman amplification can mitigate these deleterious effects.",
keywords = "raman amplification, laser plasma interaction, plasma instability",
author = "G Vieux and E Brunetti and S Cipiccia and B Eliasson and B Ersfeld and Farmer, {J P} and Hur, {M S} and N Lemos and Welsh, {G H} and Wiggins, {S M} and X Yang and Yoffe, {S R} and Dias, {J M} and Jaroszynski, {D A}",
year = "2019",
month = "11",
day = "27",
doi = "10.1088/1361-6587/ab56de",
language = "English",
volume = "62",
journal = "Plasma Physics and Controlled Fusion",
issn = "0741-3335",
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Towards a high efficiency amplifier based on Raman amplification. / Vieux, G; Brunetti, E; Cipiccia, S; Eliasson, B; Ersfeld, B; Farmer, J P; Hur, M S; Lemos, N; Welsh, G H; Wiggins, S M; Yang, X; Yoffe, S R; Dias, J M; Jaroszynski, D A.

In: Plasma Physics and Controlled Fusion, Vol. 62, No. 1, 014018, 27.11.2019.

Research output: Contribution to journalSpecial issue

TY - JOUR

T1 - Towards a high efficiency amplifier based on Raman amplification

AU - Vieux, G

AU - Brunetti, E

AU - Cipiccia, S

AU - Eliasson, B

AU - Ersfeld, B

AU - Farmer, J P

AU - Hur, M S

AU - Lemos, N

AU - Welsh, G H

AU - Wiggins, S M

AU - Yang, X

AU - Yoffe, S R

AU - Dias, J M

AU - Jaroszynski, D A

PY - 2019/11/27

Y1 - 2019/11/27

N2 - Ultra high power laser amplifier systems based on plasma may provide a pathway to reach petawatt to exawatt powers, vastly exceeding the limitations imposed by the currently low damage threshold of solid state optical elements. In theory unfocused intensities of 1017 W cm−2 could be reached. The Raman amplification scheme has been demonstrated as a promising candidate through the observation of 10% energy transfer efficiency due to amplification of noise, which implies potentially much larger efficiencies. However, controlled amplification of a seed pulse has not hitherto exceeded an efficiency of 7%. Here we discuss several saturation mechanisms that can limit the gain, such as early pump scattering and thermal effects. We show that chirped pulse Raman amplification can mitigate these deleterious effects.

AB - Ultra high power laser amplifier systems based on plasma may provide a pathway to reach petawatt to exawatt powers, vastly exceeding the limitations imposed by the currently low damage threshold of solid state optical elements. In theory unfocused intensities of 1017 W cm−2 could be reached. The Raman amplification scheme has been demonstrated as a promising candidate through the observation of 10% energy transfer efficiency due to amplification of noise, which implies potentially much larger efficiencies. However, controlled amplification of a seed pulse has not hitherto exceeded an efficiency of 7%. Here we discuss several saturation mechanisms that can limit the gain, such as early pump scattering and thermal effects. We show that chirped pulse Raman amplification can mitigate these deleterious effects.

KW - raman amplification

KW - laser plasma interaction

KW - plasma instability

U2 - 10.1088/1361-6587/ab56de

DO - 10.1088/1361-6587/ab56de

M3 - Special issue

VL - 62

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 1

M1 - 014018

ER -