[Todos] HOY: Coloquios DF - Carmen Menoni. 14hs, Aula Seminario, 2do piso, Pab. I

[Augusto Roncaglia]

COLOQUIOS DEL DEPARTAMENTO DE FÍSICA EXACTAS - UBA


              En el Aula Seminario, 2do piso, Pab. I,

              Jueves 14/6, 14hs:

              CARMEN MENONI

              Colorado State University


*Thin film amorphous oxides for optical interference coatings of demanding
laser applications and their characterization*

Ion beam sputtering is a physical vapor deposition method that allows for
the growth of thin films with superior control in thickness, uniformity and
density. Reactive ion beam sputtering produces amorphous oxide films of the
highest density. For this reason it is the preferred deposition method to
engineer interference coatings for demanding applications in coatings for
high energy lasers operating in visible and near infrared, for the test
masses of the Laser Gravitational Wave Interferometer (LIGO). In this talk
I will describe fundamentals of the ion beam sputtering of amorphous
oxides, focusing on how the materials’ properties can be tailored for the
specific laser applications. I will also present results on the use of
broad area ion beams to pattern surfaces with periodic structures which are
potentially enablers of three dimensional periodic multilayer structures.
Towards the end of the talk I will describe new opportunities in materials
and optical science research enabled by bright table top x-ray sources.
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