dorsal/arxiv
View SchemaScattering of a few-cycle laser pulse by a plasma layer: the role of the carrier-envelope phase difference at relativistic intensities
| Authors | Sandor Varro |
|---|---|
| Categories | |
| ArXiv ID | physics/0610255 |
| URL | https://arxiv.org/abs/physics/0610255 |
| DOI | 10.1002/lapl.200610096 |
| Journal | Laser Physics Letters Vol. 4, No. 3, 218-225 (2007) |
Abstract
The reflection and transmission of a few-cycle Ti:Sa laser pulse iminging on a thin plasma layer have been analysed on the basis of classical electrodynamics. An approximate analytic solution has been given for the coupled Maxwell-Lorentz equations describing the dynamics of the surface current and the composite radiation field. The nonlinearities stemming from the relativistics kinematics of free electrons lead to the appearance of higher-harmonics in the scattered spectra. In our analysis particular attention has been paid to the effect of the carrier-envelope phase difference of the incoming laser pulse. For the fourth harmonic peak we calculated almost 25 percent modulation. In general, the harmonic peaks are down-shifted due to presence of the intensity-dependent factors by an order of 15-65 percent in case of an incoming field of intensity we have discussed. The spectrum of the high-harmonics has a long tail where the heights of the peaks vary within one order of magnitude forming a quasi-continuum. By Fourier synthetising the field components of this plateau region attosecond pulses have been obtained.
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"abstract": "The reflection and transmission of a few-cycle Ti:Sa laser pulse iminging on\na thin plasma layer have been analysed on the basis of classical\nelectrodynamics. An approximate analytic solution has been given for the\ncoupled Maxwell-Lorentz equations describing the dynamics of the surface\ncurrent and the composite radiation field. The nonlinearities stemming from the\nrelativistics kinematics of free electrons lead to the appearance of\nhigher-harmonics in the scattered spectra. In our analysis particular attention\nhas been paid to the effect of the carrier-envelope phase difference of the\nincoming laser pulse. For the fourth harmonic peak we calculated almost 25\npercent modulation. In general, the harmonic peaks are down-shifted due to\npresence of the intensity-dependent factors by an order of 15-65 percent in\ncase of an incoming field of intensity we have discussed. The spectrum of the\nhigh-harmonics has a long tail where the heights of the peaks vary within one\norder of magnitude forming a quasi-continuum. By Fourier synthetising the field\ncomponents of this plateau region attosecond pulses have been obtained.",
"arxiv_id": "physics/0610255",
"authors": [
"Sandor Varro"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1002/lapl.200610096",
"journal_ref": "Laser Physics Letters Vol. 4, No. 3, 218-225 (2007)",
"title": "Scattering of a few-cycle laser pulse by a plasma layer: the role of the carrier-envelope phase difference at relativistic intensities",
"url": "https://arxiv.org/abs/physics/0610255"
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