SMuK 2023 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 2: Advanced Light Sources and their Instrumentation
AKBP 2.2: Vortrag
Montag, 20. März 2023, 16:15–16:30, CHE/0184
Spectro-temporal Properties of Coherently Emitted Radiation Pulses at DELTA — •Arjun Radha Krishnan1, Benedikt Büsing1, Shaukat Khan1, Carsten Mai1, Wa'el Salah2, Zohair Usfoor1, and Vivek Vijayan1 — 1Center for Synchrotron Radiation (DELTA), TU Dortmund, Dortmund, Germany — 2The Hashemite University, Zarqa, Jordan
The short-pulse facility at the 1.5 GeV synchrotron light source DELTA, operated by the TU Dortmund University, employs the seeding scheme coherent harmonic generation (CHG) to produce ultrashort pulses in the vacuum ultraviolet and terahertz regime. Since the properties of the CHG radiation are based on the laser-induced energy modulation and the microbunching process, the spectral and temporal properties of the CHG pulses can be controlled by tuning the laser chirp and the strength of the dispersive chicane. The CHG spectra at several harmonics of the 800 nm seed laser were recorded using an image-intensified CCD camera and an XUV spectrometer for different seed laser chirps and chicane strengths. Convolutional neural networks were employed to fit the observed spectra with the simulations and extract the spectral phase information of the seed laser, taking the higher-order spectral phase of the seed pulse into consideration.