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Double-pulsed wave packets in spontaneous radiation from a tandem undulator
T Kaneyasu1, M Hosaka2,3, A Mano2
1SAGA Light Source, Tosu, 841-0005, Japan. kaneyasu@saga-ls.jp.
Scientific Reports
|June 11, 2022
Summary
Researchers confirmed that tandem undulators generate double-pulsed radiation. This attosecond-level controlled pulse spacing opens new possibilities for advanced light source applications.
Area of Science:
- Physics
- Optics
- Quantum Mechanics
Background:
- Spontaneous radiation from undulators is crucial for advanced light sources.
- Controlling the temporal structure of radiation pulses is essential for many applications.
- Previous methods lacked precise control over pulse spacing at the attosecond level.
Purpose of the Study:
- To verify the double-pulsed temporal profile of radiation from tandem undulators.
- To demonstrate attosecond-level control over the pulse spacing.
- To characterize the time delay between pulses across different wavelengths.
Main Methods:
- Utilizing a Mach-Zehnder interferometer for autocorrelation trace measurements.
- Employing tandem undulators to generate spontaneous radiation.
- Operating the interferometer at ultraviolet wavelengths.
Main Results:
- Confirmed a double-pulsed temporal profile for each radiation wave packet.
- Demonstrated variable pulse spacing controllable at the attosecond level.
- Observed a consistent double-pulsed structure with 10-cycle oscillations and adjustable separation.
Conclusions:
- Tandem undulators reliably produce double-pulsed wave packets.
- The pulse separation is precisely controllable, enabling attosecond-level precision.
- This technology allows for the generation of double-pulsed radiation at arbitrary wavelengths.
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