First dual-sweep streak camera measurements of a photoelectric injector drive laser
Abstract
We have performed the first dual-sweep streak camera measurements of a photoelectric injector (PEI) drive laser in regard to micropulse duration, phase jitter, and phase slew. As the drive laser features are directly coupled to eventual electron beam properties, characterization of those features is critical to optimizing free electron laser (FEL) performance. The features have been investigated on both inter- and intramacropulse regimes at the Los Alamos FEL facility. In this initial phase we measured the doubled frequency component from the Nd:YLF based laser system using a Hamamatsu C1587 universal streak camera with a synchroscan plug-in and the dual sweep upgrade unit. We demonstrated macropulse-to-macropulse jitter was approx. 8 ps (RMS) without laser phase stabilization and less than or = 2 ps (RMS) with laser optimization and phase stabilization. Additionally, for the 100 microsec long macropulse the phase slew within the macropulse was reduced with phase feedback from approx. 5 ps to near the resolution limit (less than 2 ps).
- Publication:
-
Presented at the 13th International Free-Electron Laser (FEL) Conference
- Pub Date:
- October 1991
- Bibcode:
- 1991ifel.confT..25L
- Keywords:
-
- Beam Injection;
- Beam Interactions;
- Free Electron Lasers;
- Neodymium Lasers;
- Injectors;
- Lasing;
- Optimization;
- Pulses;
- Stability;
- Streak Cameras;
- Streak Photography;
- Lasers and Masers