München 2019 – wissenschaftliches Programm

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K: Fachverband Kurzzeit- und angewandte Laserphysik

K 9: Poster

K 9.2: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Durchgangshalle

3D printed antireflection coating — •Rebecca Rühle, Michael Schmid, and Harald Giessen — 4th Physics Institute University of Stuttgart

3D printed micro-optics have been greatly improved in recent years. Especially in applications such as endoscopy or sensor technology, their importance is gaining momentum. The image quality of existing optics is reduced by reflection losses. To reduce these reflections, antireflection coatings are applied. A possibility of such an antireflective layer are small protuberances on the surface, which are called moth eyes.

With the help of the 3D printer Photonics Professional from Nanoscribe GmbH such moth eyes are produced. Different methods for compensating the tilt of the glass substrate were investigated. The distance of the moth eyes, the laser power, and the height of the moth eyes were varied to find out which settings have the best characteristics of the moth eyes in the visual wavelength range. Subsequently, the moth eyes were successfully printed on a spherical surface in a one-step process. In a two-step process, an attempt was made to print the moth eyes on a spherical cut with different photoresists.