Journal Article

PUBDB-2025-04241

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultrafast change of optical polarization predicted for XUV-irradiated diamond

Antunes, S. (Corresponding author)CFEL*DESY* ; Ziaja, B.CFEL*XFEL.EU*DESY* ; Lipp, V.CFEL*XFEL.EU*DESY* ; Kapcia, K.CFEL*Extern* ; Capotondi, F.Extern*

2026
Optica Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.585149  doi:10.3204/PUBDB-2025-04241

Abstract: The principle behind light-induced switching, which is used in modern electronic devices, is the modulation of a light signal in an externally modified medium. This allows for real-time control of the signal’s phase, amplitude, or polarization. In this study, we theoretically examine transient changes in the optical polarization of wide-bandgap semiconductors irradiated by femtosecond XUV pulses to explore their potential applications in optical switching, using diamond as an example. Specifically, we observe that at a certain combination of XUV pulse parameters, an ultrafast change in the polarization angle can be triggered in diamond. These results suggest a promising approach to reversibly modulate the optical polarization in wide-bandgap semiconductors on a 100 fs timescale.

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Contributing Institute(s):

1. Gruppe CFEL-XM (FS-CFEL-XM)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2026

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