The capability of laser plasmas to generate and sustain ultra-high electric ﬁelds has given rise to laser-plasma engineering, which nowadays is widely used to produce and manipulate the intense beams of charged particles and radiation. One important application of laser plasmas is the compact sources of X-ray synchrotron radiation (SR). In this context, an important role is given to laser plasma acceleration (LPA) – the technique, where quasi-monoenergetic beams of MeV/GeV electrons are produced in a millimeter-scale gas jet via laser-driven plasma waves. The beams delivered by state-of-the-art LPA are extremely intense, but yet have relatively high divergence and energy spread due to complexity of electron injection into the accelerating plasmas ﬁelds. Therefore, for effcient X-ray generation and/or ampliﬁcation, such future laser-plasma SR sources require strong undulators, which can also operate on very short lengths.
New concepts of the compact sources attract growing interest worldwide thanks to the numerous applications of X-rays in science, medicine and technology. In this presentation, I discuss the schemes of ultra-compact optical and plasma undulators, which involve laser-plasma technology and nano-engineering. The concepts of the undulators based on the optical lattice, and on the nano-structured plasmas are presented in detail. Theoretical descriptions are provided and veriﬁed with advanced numerical modeling. The numerical methods are discussed explicitly in the context of X-ray ampliﬁcation via stimulated scattering mechanisms.
- Seminarraum HI-Jena, Fröbelstieg 3
- Datum (Start der Veranstaltung)