Optical manufacturing processes for power laser components

This work is mainly carried out within the framework of the LIL and LMJ projects of the CEA DAM as well as the PETAL project financed by the Aquitaine Region, three installations in operation or under construction on the CEA CESTA site. I am particularly interested in two main topics: the study of high UV polishing processes on the one hand and the development of diffractive components (gratings, phase plates) on the other hand. In all cases, the aim is to be able to manufacture optical components that can be used under high laser fluxes and often of large dimensions (close to 40 cm x 40 cm). Finally, it should be noted that most of the large-scale manufacturing facilities are located in industry, so this work involves strong collaboration with industry in addition to university studies. The research activities will be detailed in part 2. This part is separated into two main themes: - Silica surfacing: I will present the problem of laser damage of silica under intense flux at 351 nm and its link with the polishing process. From the first industrial works initiated in 1998 to those of the CASIMIR working group of the CEA and its university partners, we will detail all the results obtained in two main areas: characterization of silica interface, understanding of the polishing process/technological tests. The second theme is: - Diffractive optics: I will briefly discuss the case of focusing gratings developed in collaboration with the company HORIBA JOBIN YVON. The case of pulse compression gratings and their optimization with respect to laser damage will then be discussed. An administrative synthesis will then be provided in part 3 before closing with a bibliography in part 4. (author)