Sol-gel optical coatings for lasers, 2

Journal Article · Wed Nov 01 04:00:00 EST 1995 · American Ceramic Society Bulletin

OSTI ID:170271

Floch, H G; Belleville, P F; Priotton, J J ^[1]; Pegon, P M; Dijonneau, C S; Guerain, J ^[2]

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1. CEA-Centre d` Etudes de Limeil-Valenton, Villeneuve-Saint Georges (France). Dept. of Lasers and Plasma Physics
2. Reosc Optique-Groupe SFIM, Ballainvilliers (France)

There are three basic types of antireflective (AR) coatings. The first is a single-layer coating in which the coating index is equal to the square root of the index of the substrate, assuming air is the external medium. The second type is a system of two or more layers of different indexes. The third type is a graded-index system, where the index is uniformly and continuously graded from the substrate to the external medium. Low reflection ranges from narrow for the single-layer to broad for the graded-layer and multilayered with a large number of layers. Four types of sol-gel AR coatings have been developed at CEL-V. They are based on single-layer or multilayer designs. They consist mainly of amorphous silica in the polymeric and/or colloidal state, combined in certain cases with other metallic oxides, binders, fillers, hydrophobic and lubricating agents, and adhesion promoters. These antireflective sol-gel-derived optical coatings have been prepared and tested for the proposed French megajoule neodymium-glass laser.

• OSTI ID: 170271
• Journal Information: American Ceramic Society Bulletin, Journal Name: American Ceramic Society Bulletin Journal Issue: 11 Vol. 74; ISSN 0002-7812; ISSN ACSBA7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTIREFLECTION COATINGS
COMPOSITE MATERIALS
INERTIAL CONFINEMENT
NEODYMIUM LASERS
OPTICAL SYSTEMS
PHEBUS FACILITY
SILICON OXIDES
SOL-GEL PROCESS