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Isolated single-cycle extreme-ultraviolet pulses from undulator radiation
Optics Letters
|September 15, 2020
Summary
We present a novel method to create isolated single-cycle pulses in the extreme-ultraviolet (XUV) range using a standard laser. This technique enables the generation of powerful, ultrashort XUV pulses for advanced research applications.
Area of Science:
- Physics
- Optics
- Quantum Electronics
Background:
- Generating isolated single-cycle pulses in the extreme-ultraviolet (XUV) region is crucial for various scientific investigations.
- Conventional methods often require complex setups or specialized laser sources.
Purpose of the Study:
- To propose and theoretically demonstrate a new method for generating isolated single-cycle XUV pulses.
- To utilize a broadband conventional laser and a tailored magnetic field for pulse generation.
Main Methods:
- Imprinting a chirped sinusoid current profile onto a relativistic electron beam using an uncompressed laser pulse.
- Propagating the modulated electron beam through a specifically designed undulator magnetic field.
Main Results:
- Successful generation of an isolated single-cycle pulse in the XUV spectral region.
- Predicted pulse characteristics: 26 attoseconds duration, 5 GW peak power.
- Achieved wavelengths down to 15 nm with moderate laser intensities (0.2 mJ/pulse).
Conclusions:
- The proposed method offers a viable pathway to produce ultrashort, high-peak-power XUV pulses.
- This technique is compatible with current electron accelerator technologies and conventional lasers.
- The generated pulses can advance research in ultrafast science and attosecond physics.
