David Pallarés Aldeiturriaga

David Pallarés Aldeiturriaga
Université Jean Monnet · Hubert Curien Laboratory

PhD In ultrafast laser processing

About

27
Publications
1,721
Reads
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92
Citations
Introduction
David Pallarés Aldeiturriaga currently works at the Photonics Engineering Group, Universidad de Cantabria. David does research in Optics. Their most recent publication is 'Mach-Zehnder interferometer based on femtosecond laser waveguide inscription'.
Additional affiliations
September 2019 - January 2020
Universidad de Cantabria
Position
  • PostDoc Position
March 2015 - June 2019
Universidad de Cantabria
Position
  • PhD Student
Education
March 2015 - June 2019
Universidad de Cantabria
Field of study
  • Mobile network information and and communication technologies
September 2013 - July 2014
University of Santiago de Compostela
Field of study
  • Photonics and laser technologies
October 2008 - September 2013

Publications

Publications (27)
Article
Full-text available
Femtosecond laser engraving offers appealing advantages compared to regular laser engraving such as higher precision and versatility. In particular, the inscription of deep patterns exhibits an increasing interest in industry. In this work, an optimization protocol based on constraining overlap ratio and scan number is demonstrated. The proposed me...
Conference Paper
Development of a high temperature sensor based on optical fiber laser generated from a cavity of reduced dimensions (43 mm) in Er-doped fiber. The mirror FBGs have been inscribed with femtosecond laser using the slit beam technique (Pl-b-Pl).
Conference Paper
Development of enhanced Pl-b-Pl FBGs using slit beam technique with femtosecond laser, with improved control of the width and depth of the induced planes. Spectral response and homogeneity of induced change are far superior to PbP FBGs.
Article
Full-text available
The consolidation of laser micro/nano processing technologies has led to a continuous increase in the complexity of optical fiber sensors. This new avenue offers novel possibilities for advanced sensing in a wide set of application sectors and, especially in the industrial and medical fields. In this review, the most important transducing structure...
Article
In this work, a hybrid cladding waveguide (CWG) Mach-Zehnder interferometer (MZI) sensor inscribed by femtosecond laser is demonstrated. The CWG has been inscribed using adaptive optics and multiscan technique. It has been discovered that these waveguides exhibit a phase change dependent of the number of scans performed, allowing free spectral rang...
Article
In this work, the development of plane-by-plane (Pl-b-Pl) fiber Bragg gratings (FBGs) by using a single pulse is reported. A slit oriented along the longitudinal axis of the fiber is employed for this. The purpose is to shape the beam so that the focal volume is spatially wider in the transverse direction of the fiber. In this way, it is possible t...
Conference Paper
Full-text available
Sensors are the devices or systems developed to offer the capacity to capture, quantify and translate physical and chemical magnitudes to another domain, normally electrical. When the mentioned sensor system uses light based technologies in their key sensing part/s, then, they can be recognized as Light based Sensors [1] or Pho-tonic Sensors, PS. I...
Article
Tilted diffraction gratings inscribed by femtosecond laser have been manufactured within multimode optical fibers, located 60 μm below the fiber end-face. These structures have been characterized by studying their phase change distribution along the grating and their cross section. Based on the previous characterization, the angles of diffraction o...
Thesis
Full-text available
In this work, femtosecond laser processing is highlighted as an effective way to produce several types of optical fiber sensors. A deep study of in-fiber laser inscription has been performed, obtaining a Mach-Zehnder interferometer and both Bragg and random gratings as a result. Attention was also focused to the fiber end-face, where several fiber...
Article
In this Letter, we present an analysis of the backscattering generated in a microdrilled tapered fiber within a short-linear-cavity fiber laser. We propose and experimentally demonstrate a fiber cavity laser based on a tapered optical fiber segment that generates artificially controlled backscattering. The 50-μm-waist taper was fabricated from a st...
Article
In this work, diffractive elements in 1 and 2 dimensions have been inscribed at the end-face of single and multicore optical fibers using femtosecond lasers. Different sensing applications have been also presented based on their projected Far Field Patterns. The manufacturing of 2D structures was achieved using two approaches: line writing and its...
Article
In this paper, we report on the ultrafast laser-induced birefringence, refractive index changes, and enhanced photoluminescence properties in the volume of neodymium (Nd), yttrium (Y) co-doped strontium fluoride (SrF2) and Nd, Y co-doped calcium fluoride (CaF2) crystals. The optical waveguides written with 500 kHz repetition rate provided lowest pr...
Conference Paper
Diffraction gratings manufactured by the laser micromachining technique on the output surface of a multimode polymer fiber optic are presented. The reliefs of the grating are made on the core section of the fiber. By having the end-face terminate at a tilted angle it is shown that diffraction orders of a single sign can be obtained, improving the s...
Conference Paper
Fibre Bragg grating regeneration involves, at its simplest, the annealing and resurrection of a seed FBG through thermal annealing. Micro-Raman spectroscopy provides evidence that inscribing the seed structure has changed the thermal history of the glass so that whilst the annealing is identical in all areas, the local glass relaxation is different...
Conference Paper
Femtosecond laser written waveguides inside optical fiber are employed to manufacture in-fiber Mach-Zehnder Interferometers. Quantitative phase and birefringence measurements suggest light confinement below focal volume due to stress accumulation.
Conference Paper
Tilted diffraction gratings have been inscribed by femtosecond laser in the bulk of optical fiber end-faces. One end-fiber diffraction grating has been applied for temperature sensing based on order displacement, achieving linear behavior up to 75°C.
Conference Paper
A hexagonal diffraction grating has been inscribed at the end of an optical fiber using a femtosecond laser. The achieved structure has been employed to measure the 2D tilt angle being also insensitive to displacement. The achieved results suggest the potential applications of these structures to many scenarios.
Article
Full-text available
In this work, an In-fiber Mach-Zehnder Interferometer inscribed by femtosecond laser for curvature sensing has been designed and manufactured. Its operating principle consists of a secondary waveguide inscription working as a sensing arm. This waveguide has been manufactured using asymmetric structures with an average refractive index change of 1.1...
Conference Paper
Full-text available
In this work, the potential of femtosecond laser for optical fiber end-face inscription is highlighted by presenting a reliable setup for optical fiber longitudinal writing. This set-up has been used to write 1 dimension diffraction grating at the fiber end-face. Its far field intensity distribution has been measured and compared with simulations a...
Article
The USC-OSA is a student chapter located at the University of Santiago de Compostela (Spain) whose objective is to bring optics and photonics knowledge closer to general public. In order to arouse kids' interest in Optics we developed an activity called Funny Light. This activity consisted on a visit of some USC-OSA members to a several local prima...
Thesis
Full-text available
La luz es uno de los estímulos más potentes a la hora de regular el sistema circadiano. De él depende la adaptación fisiológica del organismo al ciclo de día y noche y las estaciones. Este sistema se orquesta mediante la secreción de la hormona melatonina, también conocida como la hormona de la noche. Como el ciclo circadiano se ajusta con las fase...

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Projects

Projects (3)
Project
Femtosecond laser engraving offers appealing advantages over regular laser engraving such as higher precision and versatility. In particular, the inscription of deep patterns exhibits an increasing interest in industry, especially in sectors such as luxuray products and bio-medicals. Within Grafem, we look out for regular process optimisation means to achieve supreme engraving quality, as well as explore unorthodox solutions for ultimate quality and throughput at a time.
Project
Study, design and manufacture of ultra-compact optical fiber sensors for detection of physical/mechanical, chemical and biological/medical parameters.