Jena 2013 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 8: Laseranwendungen und Lasermaterialbearbeitung II
K 8.5: Vortrag
Donnerstag, 28. Februar 2013, 15:00–15:15, HS 4
Characteristics of femtosecond laser pulse written Volume-Bragg-Gratings — •Daniel Richter1, Christian Voigtländer1, Ria G. Krämer1, Jens U. Thomas1, Andreas Tünnermann1,2, and Stefan Nolte1,2 — 1Institut für Angewandte Physik, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany — 2Fraunhofer Institut for Applied Optics and Precision Engineering, Albert-Einstein-Str. 7, 07745 Jena, Germany
Applying ultrashort laser pulses for the inscription of Volume-Bragg-Gratings (VBGs) opens a large door into the field of integrated and monolithic solutions for light control. One significant advantage compared to other techniques is that a wide variety of transparent materials - which are most likely non-photosensitive - can be modified and enable therefore the possibility for monolithic solutions. We will show the basic characteristics of the written gratings like grating structure, reflection bandwidth or (tunable) diffraction efficiency. Additionally we will use a VBG to measure the Gouy shift like it is predicted in Gaussian optics and we will show a first realization of a multiwavelength beam combiner with a single element.