Double-track waveguides inside calcium fluoride crystals
Language
en
Article de revue
This item was published in
Crystals. 2020-02, vol. 10, n° 2, p. 109 (13 p.)
MDPI
English Abstract
Calcium Fluoride (CaF2) was selected owing to its cubic symmetry and excellent luminescence properties as a crystal of interest, and ultrafast laser inscription of in-bulk double-track waveguides was realized. The guiding ...Read more >
Calcium Fluoride (CaF2) was selected owing to its cubic symmetry and excellent luminescence properties as a crystal of interest, and ultrafast laser inscription of in-bulk double-track waveguides was realized. The guiding properties of these waveguides in relation to the writing energy of the femtosecond pulse are presented. The modified double-track waveguides have been studied by systematic developments of beam propagation experiments and numerical simulations. Furthermore, an adapted model and concepts were engaged for the quantitative and qualitative characterization of the waveguides, particularly for the transmission loss measurements and the three-dimensional refractive index mappings of the modified zones. Additionally, polarization-dependent guiding was investigated.Read less <
English Keywords
femtosecond lasers
direct laser writing (DLW)
micro-processing
photonic device
cubic crystal
waveguides
double-track
Calcium Fluoride
refractive index change
quantitative phase imaging
ANR Project
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
Origin
Hal imported