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Proceedings Paper

Direct femtosecond laser writing of buried infrared waveguides in chalcogenide glasses
Author(s): D. Le Coq; E. Bychkov; P. Masselin
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Paper Abstract

Direct laser writing technique is now widely used in particular in glass, to produce both passive and active photonic devices. This technique offers a real scientific opportunity to generate three-dimensional optical components and since chalcogenide glasses possess transparency properties from the visible up to mid-infrared range, they are of great interest. Moreover, they also have high optical non-linearity and high photo-sensitivity that make easy the inscription of refractive index modification. The understanding of the fundamental and physical processes induced by the laser pulses is the key to well-control the laser writing and consequently to realize integrated photonic devices. In this paper, we will focus on two different ways allowing infrared buried waveguide to be obtained. The first part will be devoted to a very original writing process based on a helical translation of the sample through the laser beam. In the second part, we will report on another original method based on both a filamentation phenomenon and a point by point technique. Finally, we will demonstrate that these two writing techniques are suitable for the design of single mode waveguide for wavelength ranging from the visible up to the infrared but also to fabricate optical components.

Paper Details

Date Published: 24 February 2016
PDF: 5 pages
Proc. SPIE 9744, Optical Components and Materials XIII, 974404 (24 February 2016); doi: 10.1117/12.2209597
Show Author Affiliations
D. Le Coq, Univ. de Rennes 1 (France)
E. Bychkov, Univ. du Littoral Côte d'Opale (France)
P. Masselin, Univ. du Littoral Côte d'Opale (France)

Published in SPIE Proceedings Vol. 9744:
Optical Components and Materials XIII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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