Refine
Document Type
- Article (4)
- Monograph/Edited Volume (2)
- Doctoral Thesis (1)
Language
- English (7)
Is part of the Bibliography
- yes (7)
Keywords
- Laser (1)
- Modenkopplung (1)
- Pulszugformung (1)
- Stimulierte Brillouin Streuung (1)
- mode-locking (1)
- stimulated Brillouin scattering (1)
- tailored pulse trains (1)
Institute
We present a flashlamp-pumped Nd: YAG laser simultaneously emitting pulse structures on microsecond, nanosecond and picosecond time scales. Within a microsecond flashlamp pump pulse a nonlinear reflector based on stimulated Brillouin scattering (SBS) generates several Q-switch pulses. The phase-conjugating effect of the SBS reflector provides a compensation of phase distortions generated inside the laser rod, resulting in transverse fundamental mode operation. Additional acousto-optic loss modulation inside the resonator leads to mode locking. As a result, each Q-switch pulse is subdivided into several picosecond pulses. Energies of up to 2 mJ for the mode-locked pulses with durations between 220 and 800 ps are demonstrated. The wide variability of the laser's temporal output parameters as well as its high beam quality make it a splendid tool for fundamental research in laser materials processing