Compartir
Título
Ultrashort pulse propagation through depressed-cladding channel waveguides in YAG crystal: Spatio-temporal characterization
Autor(es)
Palabras clave
ultrafast optics
channeled waveguides
spectral interferometry
phase measurements
pulse measurements
Clasificación UNESCO
2209 Óptica
Fecha de publicación
2020
Editor
Elsevier Science Publishers (Amsterdam, Países Bajos)
Citación
M. Morales-Vidal, I. J. Sola, G. R. Castillo, J. R. Vázquez de Aldana, and B. Alonso (2020). Ultrashort pulse propagation through depressed-cladding channel waveguides in YAG crystal: Spatio-temporal characterization. Opt. Laser Technol. 123, 105898
Resumen
[EN]Inscription of optical waveguides by direct femtosecond laser irradiation has become a very versatile tool for the development of integrated photonic devices, such as waveguide lasers, frequency converters or photonic lanterns, among many others. The potential application of such devices for the control and manipulation of ultrashort pulses requires the precise knowledge of the temporal distortions that may be induced in the pulse propagation. Currently, research in this topic is scarce, and to our knowledge there is no previous experimental study on the spatio-temporal characterization at the output of waveguides inscribed inside crystals. Here, we have firstly fabricated depressed-cladding waveguides with different modal behavior in YAG crystal by direct femtosecond laser irradiation. Then, we implemented an experimental method based on the fiber coupler assisted spectral interferometry technique, that allows obtaining: (1) the temporal dispersion of a pulse at the output of an inscribed waveguide and, (2) full spatio-spectral and spatio-temporal characterization of the output of single-mode and multi-mode waveguides. Our results suggest that the main contribution to the pulse dispersion is due to the material dispersion. Moreover, we found that multimodal waveguides may induce an appreciable inhomogeneity in the temporal features of the pulses that needs to be taken into account in the design of complex devices.
URI
https://www.sciencedirect.com/science/article/pii/S003039921931148X
http://hdl.handle.net/10366/140272
http://hdl.handle.net/10366/140272
ISSN
0030-3992
DOI
10.1016/j.optlastec.2019.105898
Collections
- ALF. Artículos [303]
Files in this item
Tamaño:
775.9Kb
Formato:
Adobe PDF
Descripción:
Artículo principal / Main manuscript.