26 August 1996 Serial arrangement for high-power solid state amplifiers with phase-conjugating mirror
Author Affiliations +
Proceedings Volume 2788, High-Power Lasers: Gas and Solid State Lasers; (1996) https://doi.org/10.1117/12.248610
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France
Abstract
To increase the beam quality of existing lasers we developed flash lamp pumped master oscillator power amplifier systems (MOPA) with phase conjugating SBS-mirrors. The used Nd:YALO as active material shows no remarkable stress birefringence resulting in a simple optical arrangement. With a single amplifier rod average output powers of 4 watt up to 140 watt were realized with a beam quality of 1.1 times the diffraction limit. Serial arrangements of amplifiers were investigated to increase the average output power. By using an optical system between the individual rods the pump power can be tuned over a wide range. The parameters of the used two lens system can be optimized to avoid damage of optical components and secure a high efficiency independent of thermal lensing. With a two amplifier system an average output power of 1 watt up to 210 watts in a near diffraction limited beam could be realized. The system works with a repetition rate of 100 Hz and emits per flash a train of 13 Q-switched pulses with an FWHM of about 90 ns. Calculations for a serial arrangement of six amplifiers were made and show the possibility to achieve an average output power of 1 kW.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans Joachim Eichler, Hans Joachim Eichler, Andreas Haase, Andreas Haase, Oliver Mehl, Oliver Mehl, "Serial arrangement for high-power solid state amplifiers with phase-conjugating mirror", Proc. SPIE 2788, High-Power Lasers: Gas and Solid State Lasers, (26 August 1996); doi: 10.1117/12.248610; https://doi.org/10.1117/12.248610
PROCEEDINGS
9 PAGES


SHARE
Back to Top