Frequency-, Time-, and Wavevector-Resolved Ultrafast Incoherent Diffraction of Noisy X-ray Pulses

Shahaf Asban, Daeheum Cho, Shaul Mukamel

Research output: Contribution to journalReview articlepeer-review

8 Scopus citations

Abstract

We study theoretically incoherent time-resolved X-ray diffraction of fluctuating sources such as free electron lasers, as well as coherent sources with controllably added randomness. We find that the temporal resolution is strongly eroded by the noise. By considering frequency resolution of the signal, we find that the statistical properties of the noise carry important information allowing us to restore the temporal resolution. We propose a multidimensional stochastic resonance treatment to shape the optical window and extract this information from signals. Using the frequency-dependent stochastic phase as a frequency marker allows to improve the spectral resolution as well via intensity correlations. Frequency-tuned field correlation functions are used to modify the effective frequency gating and extract specific charge density contributions to the diffraction pattern while maintaining temporal resolution.

Original languageEnglish
Pages (from-to)5805-5814
Number of pages10
JournalJournal of Physical Chemistry Letters
Volume10
Issue number19
DOIs
StatePublished - 3 Oct 2019

Fingerprint

Dive into the research topics of 'Frequency-, Time-, and Wavevector-Resolved Ultrafast Incoherent Diffraction of Noisy X-ray Pulses'. Together they form a unique fingerprint.

Cite this