Photometer for large optics

Jean-Christophe Poncetta; Andre Rouseel

doi:10.1117/12.294269

8 December 1997 Photometer for large optics

Jean-Christophe Poncetta, Andre Rouseel

Proceedings Volume 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference; (1997) https://doi.org/10.1117/12.294269
Event: Second International Conference on Solid State Lasers for Application to ICF, 1996, Paris, France

Abstract

The Mégajoules Laser (LMJ ) is comprised of 240 separate beam lines that each produces about 20 kJ of 1 .053 microns light. Simply stated the architecture consists of 240 optical pulse generation system that each delivers a 10 nJ shaped and modulated pulse. Next, 240 preamplifier modules amplify the tailored pulses to 1 J, whereupon they are transported to the large amplifier chains where the laser energy is increased to the 20 kJ level. The preamplifier modules contain a regenerative amplifier ( regen ), a spatial beam shaping module and a fourpass amplifier. The specifications for the regen include a total gain of i0, an output energy of 10 mJ, operating at a 1 Hz rate, a square-pulse distortion < 2, a signal-to noise-ratio > i0, and a pulse-to-pulse output energy stability ofbetter than 3%.

Citation Download Citation

Jean-Christophe Poncetta and Andre Rouseel "Photometer for large optics", Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); https://doi.org/10.1117/12.294269

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