Determining the duration of an intense laser pulse directly in focus
arXiv:1712.06898 · doi:10.1038/s41598-019-55949-3
Abstract
We propose a novel measurement technique capable of determining the temporal duration of an intense laser pulse directly in its focus at full intensity. We show that the electromagnetic radiation pattern emitted by an electron bunch with a temporal energy chirp colliding perpendicularly with the laser pulse exhibits a distinct dependence on the pulse's duration. As the electrons emit radiation into an angular region determined by the ratio of their instantaneous energy to the laser's local field strength, the temporal change of the electrons' energy imprints information about the laser's pulse duration onto the angular radiation distribution. We quantify the interaction by a simplified analytical model and confirm this model's predictions by numerical simulations of the electrons' dynamics inside a realistically focused laser field. Based on these findings the pulse's duration can be determined to an accuracy of several percent.
5 pages, 4 figures
References in corpus (11)
- All-optical Compton gamma-ray source
- Experimental signatures of the quantum nature of radiation reaction in the field of an ultra-intense laser
- Ultra-high brilliance multi-MeV -ray beam from non-linear Thomson scattering
- Tracing the phase of focused broadband laser pulses
- Focussing effects in laser-electron Thomson scattering
- Strong-Field Breit-Wheeler Pair Production in Short Laser Pulses: Identifying Multiphoton Interference and Carrier-Envelope-Phase Effects
- Chirp mitigation of plasma-accelerated beams using a modulated plasma density
- Determination of the carrier envelope phase for short, circularly polarized laser pulses
- Streak Camera for Strong-Field Ionization
- An all-optical Compton source for single-exposure X-ray imaging
- Thomson scattering in high-intensity chirped laser pulses