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Resonant suppression and feedback control of anomalous induced backscattering by the pump frequency modulation

V I Arkhipenko et al 2009 Plasma Phys. Control. Fusion 51 125005 (14pp)   doi: 10.1088/0741-3335/51/12/125005  Help

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V I Arkhipenko1, E Z Gusakov2, L V Simonchik1 and F M Truhachev1
1 Stepanov Institute of Physics, NAS of Belarus, Nezavisimostsi 68, 220072 Minsk, Republic of Belarus
2 IRAS Ioffe Institute, Politekhnicheskaya 26, 194021 St Petersburg, Russian Federation
E-mail: simon@imaph.bas-net.by

Abstract. The possibility of induced backscattering parametric decay instability resonant suppression by harmonic pump frequency modulation is demonstrated experimentally. It is shown that the pump anomalous reflection is strongly reduced at the modulation frequency equal to the difference of the decay instability eigen frequencies. The parametric instability feedback control method is proposed based on this effect.

Print publication: Issue 12 (December 2009)
Received 22 July 2009, in final form 18 September 2009
Published 29 October 2009

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