Effects of stress on neighboring laser written waveguides in gallium lanthanum sulfide

Diener R, Nolte S, Pertsch T, Minardi S (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 112

Article Number: 111908

Journal Issue: 11

DOI: 10.1063/1.5018646

Abstract

We investigate an observed lack of excitation symmetry of discrete diffraction patterns in periodic arrays of waveguides written by ultrafast laser inscription (ULI) in gallium lanthanum sulfide glasses. We found experimentally that successive waveguides written with identical parameters are detuned from the previous one by Δβ ∼ 0.2-0.5 mm-1. We show that by varying the writing speed of successive waveguides, we increase the symmetry of the array and reduce the detuning by a factor of 2. After careful analysis of possible physical causes, observations suggest that the density of the laser irradiated material is affected by long range stresses induced by ULI.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Diener, R., Nolte, S., Pertsch, T., & Minardi, S. (2018). Effects of stress on neighboring laser written waveguides in gallium lanthanum sulfide. Applied Physics Letters, 112(11). https://doi.org/10.1063/1.5018646

MLA:

Diener, Romina, et al. "Effects of stress on neighboring laser written waveguides in gallium lanthanum sulfide." Applied Physics Letters 112.11 (2018).

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