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

被引：47

作者：

Vieux, G. ^{[1
,2
,3
]}

Cipiccia, S. ^{[1
,2
,10
]}

Grant, D. W. ^{[1
,2
]}

Lemos, N. ^{[4
,11
]}

Grant, P. ^{[1
,2
]}

Ciocarlan, C. ^{[1
,2
,5
]}

Ersfeld, B. ^{[1
,2
]}

Hur, M. S. ^{[6
]}

Lepipas, P. ^{[1
,2
]}

Manahan, G. G. ^{[1
,2
]}

Raj, G. ^{[1
,2
,12
]}

Gil, D. Reboredo ^{[1
,2
]}

Subiel, A. ^{[1
,2
,13
]}

Welsh, G. H. ^{[1
,2
]}

Wiggins, S. M. ^{[1
,2
]}

Yoffe, S. R. ^{[1
,2
]}

Farmer, J. P. ^{[7
]}

Aniculaesei, C. ^{[1
,2
,14
]}

Brunetti, E. ^{[1
,2
]}

Yang, X. ^{[1
,2
,15
,16
]}

Heathcote, R. ^{[8
]}

Nersisyan, G. ^{[9
]}

Lewis, C. L. S. ^{[9
]}

Pukhov, A. ^{[7
]}

Dias, J. M. ^{[4
]}

Jaroszynski, D. A. ^{[1
,2
]}

机构：

[1] Scottish Univ Phys Alliance, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[2] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[3] Inst Phys ASCR ELI Beamlines, Na Slovance 2, Prague 18221, Czech Republic

[4] Univ Lisbon, Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, Lisbon, Portugal

[5] Natl Inst Phys & Nucl Engn, IFIN HH, Bucharest, Romania

[6] UNIST, Banyeonri 100 Ulju Gun, Ulsan 689798, South Korea

[7] Heinrich Heine Univ, Theoret Phys 1, D-40225 Dusseldorf, Germany

[8] Cent Laser Facil, Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[9] Queens Univ Belfast, Ctr Plasma Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[10] Harwell Sci & Innovat Campus, Diamond Light Source, Fermi Ave, Didcot OX11 0DE, Oxon, England

[11] Lawrence Livermore Natl Lab NIF & photon Sci, 7000 East Ave, Livermore, CA 94550 USA

[12] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France

[13] Natl Phys Lab Med Radiat Sci, Med Radiat Sci, Hampton Rd, Teddington TW11 0LW, Middx, England

[14] Inst Basic Sci, Ctr Relat Laser Sci, Gwangju 61005, South Korea

[15] Capital Normal Univ, Dept Phys, Key Lab Terahertz Optoelect, Minist Educ, Beijing 100048, Peoples R China

[16] Beijing Adv Innovat Ctr Imaging Technol, Beijing 100048, Peoples R China

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

英国工程与自然科学研究理事会; 欧盟地平线“2020”;

关键词：

LASER-PULSE AMPLIFICATION; GAS-JET PLASMA; BACKSCATTERING; REGIME;

D O I：

10.1038/s41598-017-01783-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 gains of more than eight orders of magnitude. The maximum gain coefficient, of 180 cm(-1), exceeds high-power solid-state amplifying media by orders of magnitude. The observation of a minimum of 640 J sr(-1) directly backscattered from noise, corresponding to approximate to 10% of the pump energy in the observation solid angle, implies potential overall efficiencies greater than 10%.

引用

页数：10

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