Related Experiment Video
Updated: Aug 7, 2026
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
High-gain lasing and polarization switch with a distributed optical-klystron free-electron laser
Y K Wu1, N A Vinokurov, S Mikhailov
1Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA. wu@fel.duke.edu
Physical Review Letters
|June 29, 2006
Summary
The distributed optical-klystron free-electron laser (DOK FEL) achieved a record 47.8% gain per pass. Researchers enhanced this gain by manipulating electron bunching and controlled beam polarization nonoptically.
Area of Science:
- Physics
- Accelerator Physics
- Quantum Electronics
Background:
- Free-electron lasers (FELs) are advanced light sources.
- Storage ring-based FELs are a key area of research.
- Optical-klystron configurations offer potential for enhanced performance.
Purpose of the Study:
- To report the initial experimental results from the novel distributed optical-klystron free-electron laser (DOK-1 FEL).
- To evaluate the performance of a hybrid wiggler system in an FEL.
- To investigate methods for enhancing FEL gain and controlling beam polarization.
Main Methods:
- Utilized the DOK-1 FEL, a hybrid system with four wigglers (two horizontal, two helical).
- Measured FEL gain per pass.
- Manipulated electron bunching using wigglers with different polarizations.
- Employed nonoptical means (buncher magnet manipulation) to control beam polarization.
Main Results:
- Achieved the highest FEL gain to date for storage ring-based FELs at 47.8% (+/-2.7%) per pass.
- Demonstrated FEL gain enhancement through increased electron bunching via varied wiggler polarization.
- Successfully realized controlled polarization switches of the FEL beam through nonoptical manipulation.
Conclusions:
- The DOK-1 FEL represents a significant advancement in FEL technology.
- Hybrid wiggler configurations and electron bunching manipulation are effective for boosting FEL gain.
- Nonoptical control of beam polarization is feasible and advantageous.
