Picture of DNA strand

Pioneering chemical biology & medicinal chemistry through Open Access research...

Strathprints makes available scholarly Open Access content by researchers in the Department of Pure & Applied Chemistry, based within the Faculty of Science.

Research here spans a wide range of topics from analytical chemistry to materials science, and from biological chemistry to theoretical chemistry. The specific work in chemical biology and medicinal chemistry, as an example, encompasses pioneering techniques in synthesis, bioinformatics, nucleic acid chemistry, amino acid chemistry, heterocyclic chemistry, biophysical chemistry and NMR spectroscopy.

Explore the Open Access research of the Department of Pure & Applied Chemistry. Or explore all of Strathclyde's Open Access research...

Radially polarized, half-cycle, attosecond pulses from laser wakefields through coherent synchrotronlike radiation

Li, F. Y. and Sheng, Z. M. and Chen, M. and Yu, L. L. and Meyer-ter-Vehn, J. and Mori, W. B. and Zhang, J. (2014) Radially polarized, half-cycle, attosecond pulses from laser wakefields through coherent synchrotronlike radiation. Physical Review E, 90 (4). ISSN 1539-3755

[img]
Preview
Text (Li-etal-PRE-2014-Radially-polarized-half-cycle-attosecond-pulses-from-laser-wakefields-through)
Li_etal_PRE_2014_Radially_polarized_half_cycle_attosecond_pulses_from_laser_wakefields_through.pdf
Accepted Author Manuscript

Download (7MB) | Preview

Abstract

Attosecond bursts of coherent synchrotronlike radiation are found when driving ultrathin relativistic electron disks in a quasi-one-dimensional regime of wakefield acceleration, in which the laser waist is larger than the wake wavelength. The disks of overcritical density shrink radially due to focusing wakefields, thus providing the transverse currents for the emission of an intense, radially polarized, half-cycle pulse of about 100 attoseconds in duration. The electromagnetic pulse first focuses to a peak intensity (7×10^20W/cm^2) 10 times larger than the driving pulse and then emerges as a conical beam. Basic dynamics of the radiative process are derived analytically and in agreement with particle-in-cell simulations. By making use of gas targets instead of solids to form the ultrathin disks, this method allows for high repetition rates required for applications.