Piezo-modulated active grating for selecting X-ray pulses separated by one nanosecond

Area of Science:

• Physics
• Materials Science
• Experimental Techniques

Background:

• Time-resolved experiments require precise control over radiation pulses.
• Existing methods for X-ray modulation can be complex or limited in flexibility.

Purpose of the Study:

• To present a novel method for temporal modulation of X-ray radiation.
• To enable precise control over X-ray pulse duration and intensity for time-resolved studies.

Main Methods:

• Utilizing Bragg reflection of a piezoelectric crystal modified with comb-shaped electrodes.
• Applying voltage to induce periodic crystal deformation, acting as a diffraction grating.
• Rapidly switching voltage to create X-ray pulses with a duty cycle down to ~1 ns.

Main Results:

• Demonstrated a prototype device capable of generating X-ray pulses from a continuous source.
• Showcased the ability to electrically correlate the device with synchrotron light sources.
• Achieved flexible control over activation patterns and pulse durations due to non-resonant operation.

Conclusions:

• The novel temporal modulation method offers a versatile tool for time-resolved X-ray experiments.
• This technique enhances the capabilities of both continuous and pulsed X-ray sources.
• The non-resonant operation provides adaptability for various experimental requirements.