Competition Effects during Femtosecond Laser Induced Element Redistribution in Ba- and La-Migration Based Laser Written Waveguides

Autor: Francisco Muñoz, Pedro Moreno-Zarate, Belén Sotillo, Paloma Fernández, Manuel Macias-Montero, Rosalía Serna, Javier Solis, Marina Garcia-Pardo
Přispěvatelé: Ministerio de Ciencia, Innovación y Universidades (España), Consejo Superior de Investigaciones Científicas (España)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Lanthanide
Technology
Materials science
02 engineering and technology
Soret effect
Fs-laser writing
Waveguide (optics)
Article
law.invention
Phosphate glass
020210 optoelectronics & photonics
law
0202 electrical engineering
electronic engineering
information engineering
Element redistribution
General Materials Science
Redistribution (chemistry)
diffusion competition effects
Microscopy
QC120-168.85
Física de materiales
business.industry
QH201-278.5
fs-laser writing
waveguides
Engineering (General). Civil engineering (General)
021001 nanoscience & nanotechnology
Laser
Alkali metal
TK1-9971
element redistribution
Descriptive and experimental mechanics
Física del estado sólido
Femtosecond
Optoelectronics
Diffusion competition effects
Electrical engineering. Electronics. Nuclear engineering
TA1-2040
0210 nano-technology
business
Waveguides
Refractive index
Zdroj: Materials
E-Prints Complutense. Archivo Institucional de la UCM
instname
Volume 14
Issue 12
Materials, Vol 14, Iss 3185, p 3185 (2021)
Digital.CSIC. Repositorio Institucional del CSIC
ISSN: 1996-1944
Popis: 15 pags., 5 figs., 4 tabs. -- This article belongs to the Special Issue Advanced Pulse Laser Machining Technology
Fs-laser induced element redistribution (FLIER) has been a subject of intensive research in recent years. Its application to various types of glasses has already resulted in the production of efficient optical waveguides, tappers, amplifiers and lasers. Most of the work reported on FLIER-based waveguides refers to structures produced by the cross-migration of alkali (Na, K) and lanthanides (mostly La). The latter elements act as refractive index carrying elements. Herein, we report the production of Ba-based, FLIER-waveguides in phosphate glass with an index contrast > 10−2 . Phosphate glasses modified with the same amount of Na2O and K2O, and variable amounts of BaO and/or La2O3 were used to produce the FLIER-waveguides with Ba and or La acting as index carriers. Ba-only modified glasses show a waveguide writing threshold and light guiding performance comparable to that of La-based structures. However, mixed Ba-La glasses show a much higher element migration threshold, and much smaller compositionally modified regions. This behavior is consistent with a competition effect in the cross-migration of both elements (Ba and La) against the alkalis. Such an effect can be applied to inhibit undesired element redistribution effects in fs-laser processing applications in multicomponent glasses.
This research was funded through grant numbers TEC2017-82464-R, MAT2017-87035-C2-1-P, RTI2018-096498-B-I00 (MCIU/AEI/FEDER, EU), and CSIC PIE-201850E057 and PIE-202050E195 projects.
Databáze: OpenAIRE
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