| Issue |
Europhys. Lett.
Volume 41, Number 4, february II 1998
|
|
|---|---|---|
| Page(s) | 389 - 394 | |
| Section | Physics of gases, plasmas, and electrical discharges | |
| DOI | https://doi.org/10.1209/epl/i1998-00162-1 | |
| Published online | 01 September 2002 | |
Second-harmonic generation by an obliquely incident laser on a vacuum-plasma interface
1
Plasma Group, Department of Physics, Indian Institute of
Technology, Hauzkhas, New Delhi, 110016, India
2
Center for Energy Studies, Indian Institute of Technology,
Hauzkhas, New Delhi, 110016, India
Received:
2
October
1996
Accepted:
15
December
1997
A high-power laser obliquely incident on a plasma produces a second-harmonic
radiation in the reflected component. The second-harmonic reflected power P2
vanishes at normal and grazing incidence. P2 has a maximum, P2m, at
an optimum value of the angle of incidence, 
, that depends on
electron density. The harmonic generation occurs from subcritical to
overcritical values of the electron density. P2m increases monotonically
with electron density, attains a maximum around critical density then falls off
at higher densities.
PACS: 52.40.Nk – Laser-plasma interactions (e.g., anomalous absorption, backscattering, magnetic field generation, fast particle generation) / 52.35.Mw – Nonlinear waves and nonlinear wave propagation (including parametric effects, mode coupling, ponderomotive effects, etc.) / 52.25.Qt – Emission, absorption, and scattering of ultraviolet radiation
© EDP Sciences, 1998
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