Energy transfer between two crossed laser beams in a nonisothermal plasma

Tripathi, Deepak; Uma, R.; Tripathi, V. K.
February 2011
Physics of Plasmas;Feb2011, Vol. 18 Issue 2, p023108
Academic Journal
The energy transfer between two crossed lasers (a high frequency high amplitude pump and a low frequency low amplitude probe beam) through the coupling with a difference frequency electrostatic mode/quasimode in a plasma is examined. The electrostatic mode in an unmagnetized plasma is a linearly damped acoustic mode, while in a magnetized plasma it is also taken to be a lower hybrid mode. It is driven by the ponderomotive force due to the pump and probe beams. The electron density perturbation associated with the electrostatic mode beats with the oscillatory velocities due to the lasers to produce nonlinear current densities facilitating the energy transfer from the high frequency laser to the probe beam. Efficient energy transfer occurs when the phase matching conditions are satisfied. Even when a finite mismatch between the lasers and the low frequency mode/quasimode exists, a significant energy transfer is possible. The theoretical results for the unmagnetized plasma are in compliance with the published experimental results. In a magnetized plasma lower hybrid wave appears to be a potential contender for facilitating energy exchange between lasers.


Related Articles

  • Laser wakefield and self-modulation of driving pulse. Lin, Hai; Xu, Zhizhan; Chen, Li-Ming; Kieffer, J. C. // Physics of Plasmas;Aug2003, Vol. 10 Issue 8, p3371 

    A self-consistent theory of plasma response to a single laser beam is proposed. The driving pump is not viewed as invariant during its interaction with the plasmas. Its modulation by the plasmas has an obvious influence on the strength of the wakefield behind the pulse. This suggests that the...

  • Symmetry tuning via controlled crossed-beam energy transfer on the National Ignition Facility. Michel, P.; Glenzer, S. H.; Divol, L.; Bradley, D. K.; Callahan, D.; Dixit, S.; Glenn, S.; Hinkel, D.; Kirkwood, R. K.; Kline, J. L.; Kruer, W. L.; Kyrala, G. A.; Le Pape, S.; Meezan, N. B.; Town, R.; Widmann, K.; Williams, E. A.; MacGowan, B. J.; Lindl, J.; Suter, L. J. // Physics of Plasmas;May2010, Vol. 17 Issue 5, p056305 

    The Hohlraum energetics experimental campaign started in the summer of 2009 on the National Ignition Facility (NIF) [E. I. Moses et al., Phys. Plasmas 16, 041006 (2009)]. These experiments showed good coupling of the laser energy into the targets [N. Meezan et al., Phys. Plasmas 17, 056304...

  • Observation of resonant energy transfer between identical-frequency laser beams. Wharton, K.B.; Kirkwood, R.K. // Physics of Plasmas;May99, Vol. 6 Issue 5, p2144 

    Reports that enhanced transmission of a low intensity laser beam is observed when crossed with an identical-frequency beam in a plasma with a flow velocity near the ion sound speed. Time history of the enhancement and the dependence on the flow velocity; Energy transfer between the beams via a...

  • Relativistic excitation of plasma waves at the difference frequency of two laser beams in a plasma. Salimullah, Md.; Liu, Y. G. // Physics of Fluids (00319171);Apr85, Vol. 28 Issue 4, p1209 

    A nonlinear relativistic excitation of longitudinal electrostatic electron plasma wave at the beat frequency of two laser beams has been studied in a hot, collisionless, and homogeneous plasma. The nonlinearity has been taken through the ponderomotive force on electrons in the relativistic...

  • Generation of coherent terahertz phonons by sharp focusing of a femtosecond laser beam in the bulk of crystalline insulators in a regime of plasma formation. Gordienko, V.; Mikheev, P.; Potemkin, F. // JETP Letters;Oct2010, Vol. 92 Issue 8, p502 

    The generation of coherent terahertz phonons in a regime of plasma formation by a femtosecond laser radiation with an intensity of 10 W/cm in the bulk of crystalline quartz has been detected by the method of probing by a probe pulse of the third harmonic. A smooth increase in the frequency of...

  • Laser prepulse induced plasma channel formation in air and relativistic self focusing of an intense short pulse. Kumar, Ashok; Dahiya, Deepak; Sharma, A. K. // Physics of Plasmas;Feb2011, Vol. 18 Issue 2, p023102 

    An analytical formalism is developed and particle-in-cell simulations are carried out to study plasma channel formation in air by a two pulse technique and subsequent relativistic self focusing of the third intense laser through it. The first prepulse causes tunnel ionization of air. The second...

  • Energy transfer between laser beams crossing in ignition hohlraums. Michel, P.; Divol, L.; Williams, E. A.; Thomas, C. A.; Callahan, D. A.; Weber, S.; Haan, S. W.; Salmonson, J. D.; Meezan, N. B.; Landen, O. L.; Dixit, S.; Hinkel, D. E.; Edwards, M. J.; MacGowan, B. J.; Lindl, J. D.; Glenzer, S. H.; Suter, L. J. // Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p042702 

    The full scale modeling of power transfer between laser beams crossing in plasmas is presented. A new model was developed, allowing calculations of the propagation and coupling of pairs of laser beams with their associated plasma wave in three dimensions. The complete set of laser beam smoothing...

  • Flyer Target Acceleration and Energy Transfer at its Collision with Massive Targets. Borodziuk, S.; Demchenko, N. N.; Gus'kov, S. Yu.; Jungwirth, K.; Kalal, M.; Kasperczuk, A.; Kralikova, B.; Krousky, E.; Limpouch, J.; Masek, K.; Pisarczyk, P.; Pisarczyk, T.; Pfeifer, M.; Rohlena, K.; Rozanov, V. B.; Skala, J.; Ullschmied, J. // AIP Conference Proceedings;2006, Vol. 812 Issue 1, p307 

    Numerical modelling was aimed at simulation of successive events resulting from interaction of laser beam-single and double targets. It was performed by means of the 2D Lagrangian hydrodynamics code ATLANT-HE. This code is based on one-fluid and two-temperature model of plasma with electron and...

  • Self-proton/ion radiography of laser-produced proton/ion beam from thin foil targets. Paudel, Y.; Renard-Le Galloudec, N.; Nicolai, Ph.; d'Humieres, E.; Ya. Faenov, A.; Kantsyrev, V. L.; Safronova, A. S.; Shrestha, I.; Osborne, G. C.; Shlyaptseva, V. V.; Sentoku, Y. // Physics of Plasmas;Dec2012, Vol. 19 Issue 12, p123101 

    Protons and multicharged ions generated from high-intensity laser interactions with thin foil targets have been studied with a 100 TW laser system. Protons/ions with energies up to 10 MeV are accelerated either from the front or the rear surface of the target material. We have observed for the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics