Details

Autor(en) / Beteiligte

• Hu, K
• Wu, H-C

Titel

Generation of Gigawatt Circularly Polarized Attosecond-Pulse Pairs

Ist Teil von

• Physical review letters, 2017-12, Vol.119 (25), p.254801-254801, Article 254801

Ort / Verlag

United States

Erscheinungsjahr

2017

Quelle

PROLA

Beschreibungen/Notizen

• A novel scheme for generating a pair of gigawatt attosecond pulses by coherent Thomson scattering from relativistic electron sheets is proposed. With a circularly polarized relativistic laser pulse, the scattered x-ray signal can have a saddlelike temporal profile, where the lower electromagnetic frequencies are found mostly in the center region of this saddlelike profile. By filtering out the latter, we can obtain two few-attosecond pulses separated by a subfemtosecond interval, which is tunable by controlling the energy of the sheet electrons. Such a pulse pair can be useful for an attosecond pump probe at an unprecedented time resolution and for ultrafast chiral studies in molecules and materials.