Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments

Area of Science:

• Physics
• Materials Science
• Electrical Engineering

Background:

• Dynamic pump-probe experiments require precise excitation pulse control.
• Exciting magnetic nanostructures necessitates high-speed current pulses.
• Synchronization with synchrotron facilities enhances experimental capabilities.

Purpose of the Study:

• To describe a novel method for generating software-tunable nanosecond electrical pulses.
• To enable high-repetition-rate and fast-rise-time pulse generation for advanced experiments.
• To provide precise temporal control for exciting magnetic nanostructures.

Main Methods:

• Generation of bipolar, high repetition rate (up to 250 MHz), fast rise time (<30 ps) square pulses.
• Software control for configuring pulse pattern parameters.
• Synchronization capabilities with synchrotron facility time structures.
• Fine control of relative delay in 10 ps steps.

Main Results:

• Successfully generated software-tunable nanosecond electrical pulse patterns.
• Achieved high repetition rates (250 MHz) and fast rise times (<30 ps).
• Demonstrated synchronization with synchrotron facilities and precise delay control.
• Enabled excitation of magnetic nanostructures with current pulses.

Conclusions:

• The described method provides a versatile tool for advanced scientific research.
• The pulse generator is suitable for dynamic pump-probe experiments requiring picosecond time resolution.
• Matching excitation system rates with synchrotron flux maximizes experimental efficiency.