Pulse distortion and modulation instability in laser plasma interaction

Journal Article · Thu Jan 15 00:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3072977· OSTI ID:21272474

Jha, Pallavi; Singh, Ram Gopal; Upadhyay, Ajay K ^[1]

---

1. Department of Physics, University of Lucknow, Lucknow 226007 (India)

The present paper deals with the propagation of a short, intense, Gaussian laser pulse in plasma. Using a one dimensional model, a wave equation including finite pulse length and group velocity dispersion is set up and solved to obtain the intensity distribution across the laser pulse. It is shown that the pulse profile becomes asymmetric as it propagates through plasma. Further, the growth rate of modulation instability and range of unstable frequencies across the laser pulse have been derived and graphically analyzed.

• OSTI ID: 21272474
• Journal Information: Physics of Plasmas, Vol. 16, Issue 1; Other Information: DOI: 10.1063/1.3072977; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
LASER RADIATION
ONE-DIMENSIONAL CALCULATIONS
PLASMA INSTABILITY
PULSES
WAVE EQUATIONS