Very high laser damage resistant HR-coatings prepared by an advanced sputtering technique

Stephane E. Seznec; Anne Fornier; C. Cordillot

doi:10.1117/12.213714

14 July 1995 Very high laser damage resistant HR-coatings prepared by an advanced sputtering technique (Abstract Only)

Stephane E. Seznec, Anne Fornier, C. Cordillot

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Proceedings Volume 2428, Laser-Induced Damage in Optical Materials: 1994; (1995) https://doi.org/10.1117/12.213714
Event: Laser-Induced Damage in Optical Materials: 1994, 1994, Boulder, CO, United States

Abstract

The CEA Limeil-Valenton Inertial Confinement Fusion (ICF) program is currently addressing, in close collaboration with LLNL, the critical physics and technology issues for demonstrating and exploiting high-gain ICF. We believe that a compelling strategy for our national ICF program is to demonstrate ignition and moderate gain at the beginning of the next century with an upgrade to the existing Phebus laser to provide 1.8 MJ of 0.351- micron light in a nanosecond regime. The proposed MJ-range laser system will consist of 288 optically independent and individually targetable beams each having a final optical aperture of approximately 35 centimeters. While Phebus used a multistage, single-pass amplifier design, the proposed MJ laser will use a single-stage multipass amplifier design so-called L-Turn. In the L-Turn architecture, a laser pulse enters the cavity and makes 4 passes in the resonator using different pathways before being directed out. The pulse reflects off a pick-off 6 x 6 cm square mirror that may withstand very high fluences. (Abstract truncated.)

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Stephane E. Seznec, Anne Fornier, and C. Cordillot "Very high laser damage resistant HR-coatings prepared by an advanced sputtering technique (Abstract Only)", Proc. SPIE 2428, Laser-Induced Damage in Optical Materials: 1994, (14 July 1995); https://doi.org/10.1117/12.213714

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KEYWORDS

Laser induced damage

Mirrors

Sputter deposition

Optical amplifiers

Laser damage threshold

Pulsed laser operation

Laser resonators

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