Статья

Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre

M. GebhardtHelmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, Germany. [email protected]T. HeuermannHelmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, GermanyR. KlasHelmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, GermanyC. LiuHelmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, GermanyA. KirscheHelmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, GermanyM. LenskiInstitute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Str. 15, 07745, Jena, GermanyZ. WangInstitute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Str. 15, 07745, Jena, GermanyC. GaidaActive Fiber Systems GmbH, Ernst-Ruska-Ring 17, 07745, Jena, GermanyJ. E. Antonio-LopezCREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USAA. SchülzgenCREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USAR. Amezcua-CorreaCREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USAJ. RothhardtFraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Str. 7, 07745, Jena, GermanyJ. LimpertFraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Str. 7, 07745, Jena, Germany

2021en

ABI

Аннотация

Abstract Bright, coherent soft X-ray radiation is essential to a variety of applications in fundamental research and life sciences. To date, a high photon flux in this spectral region can only be delivered by synchrotrons, free-electron lasers or high-order harmonic generation sources, which are driven by kHz-class repetition rate lasers with very high peak powers. Here, we establish a novel route toward powerful and easy-to-use SXR sources by presenting a compact experiment in which nonlinear pulse self-compression to the few-cycle regime is combined with phase-matched high-order harmonic generation in a single, helium-filled antiresonant hollow-core fibre. This enables the first 100 kHz-class repetition rate, table-top soft X-ray source that delivers an application-relevant flux of 2.8 × 10 6 photon s −1 eV −1 around 300 eV. The fibre integration of temporal pulse self-compression (leading to the formation of the necessary strong-field waveforms) and pressure-controlled phase matching will allow compact, high-repetition-rate laser technology, including commercially available systems, to drive simple and cost-effective, coherent high-flux soft X-ray sources.

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Идентификаторы

DOI: 10.1038/s41377-021-00477-x

Цитирования и источники

Цитирований: 2Использованных источников: 0

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