Optimalisation of 3D laser printing process for highly reflective polymer surfaces

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Abstract
In this paper, we will focus on the quality of polymer mirror interfaces prepared by high-precise 3D laser lithography. Using this technique, it is possible to create various optical elements, such as interferometers, resonators, and sensors. For these elements to function properly, it is necessary to achieve the best possible surface roughness parameters of the mirror interfaces. The polymer mirror surfaces can be post-treated with a focused ion beam, but our goal will be to achieve acceptable polymer surfaces in a one-step lithography process. By changing of printing parameters, we can achieve different surface roughness. We will focus on optimizing the laser printing process, for elements working in the infrared region, near to telecommunication wavelength of 1550 nm. For measurements we will use the optical spectrum analyzer and LED source, where reflection on IP-Dip polymer will be investigated.

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