Title :
Development of high-power DPSSL and its application
Author :
Izawa, Y. ; Yamanaka, M. ; Nakai, S.
Author_Institution :
Inst. of Laser Eng., Osaka Univ., Japan
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
Driver technology is a key issue for Inertial Fusion Energy (IFE) development. A diode pumped solid-state laser (DPSSL) is expected to be a promising candidate of reactor driver for IFE. The specifications required for the IFE driver are 2-5 MJ output pulse energy, 10-20 Hz repetition rate, 500-200 nm laser wavelength, and >10% electrical efficiency. We have newly designed a Nd:YAG DPSSL driver module based on a water cooled zig-zag path slab amplifier, which can deliver 10 kJ output energy at 350 nm with 12 Hz repetition. The module consists of 15 beamlets and each beamlet is a double 4-pass amplifier system as it plays a role of both pre-amplifier (4-pass) and main amplifier (4-pass). The laser driver producing a 4 MJ blue output consists of 400 modules.
Keywords :
fusion reactor instrumentation; laser beams; laser fusion; neodymium; optical pumping; solid lasers; 10 kJ; 10 percent; 10 to 20 Hz; 12 Hz; 2 to 5 MJ; 350 nm; 4 MJ; 500 to 200 nm; Nd:YAG laser; YAG:Nd; YAl5O12:Nd; beamlets; blue output; diode pumped solid-state laser; double 4-pass amplifier system; driver module; driver technology; electrical efficiency; inertial fusion energy; laser driver; laser wavelength; main amplifier; module; output energy; output pulse energy; pre-amplifier; reactor driver; repetition; repetition rate; water cooled zig-zag path slab amplifier; Diodes; Driver circuits; Fusion reactor design; Inductors; Laser excitation; Laser fusion; Optical pulses; Pulse amplifiers; Pump lasers; Solid lasers;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811379