Analysis and degradation mechanisms of enamels, grisailles and silver stains on Modernist stained glass. 

    Beltrán González, Martí (Date of defense: 2021-01-22)

    Materials and methods used in the production of modernist (late 19th and early 20th century) stained glass from the city of Barcelona with special regards to the degradation mechanisms of enamels, grisailles and silver ...

    Experimental study of speckle generated by semiconductor light sources: application in double pass imaging 

    Halpaap, Donatus (Date of defense: 2019-12-09)

    With the double pass (DP) technique it is possible to quantify the optical quality of a patient's eye by measuring its point spread function. Due to the low reflectivity of the retina a high-intensity, point-like illumination ...

    Hybrid non-destructive technique for volumetric defect analysis and reconstruction by remote laser induced ultrasound 

    Selim, Hossam (Date of defense: 2020-07-21)

    This PhD thesis is devoted to the design, development and implementation of a non-contact hybrid non-destructive testing (NDT) method applied to the analysis of metallic objects that contain embedded defects or fractures. ...

    Light beam propagation in complex crystals 

    Kumar, Nikhil P. (Date of defense: 2017-07-13)

    Recent advancement in Photonics have brought about a new era of miniaturisation. Along came a need for technology to allow the manipulation of light at the micrometer scale, with precise control over beam propagation. The ...

    Light management in non-Hermitian systems 

    Ahmed, Waqas Waseem (Date of defense: 2018-04-17)

    The quest for new artificial structures and materials uncovers novel new light-matter interactions, and intriguing physical phenomena. Since the late 80’s purely dielectric materials have been structured, at the wavelength-scale, ...

    Machine learning methods for the characterization and classification of complex data 

    Amil Marletti, Pablo (Date of defense: 2020-02-11)

    This thesis work presents novel methods for the analysis and classification of medical images and, more generally, complex data. First, an unsupervised machine learning method is proposed to order anterior chamber OCT ...

    Nonlinear optics at nanoscale: frequency conversion at interfaces 

    Rodríguez Suñé, Laura (Date of defense: 2023-06-19)

    (English) The use of semiconductors, metals, or ordinary dielectrics in the process of fabrication of nanodevices is at the front edge of nowadays technology. In the last decade an impressive technological progress has ...

    Second harmonic generation in disordered nonlinear crystals : application to ultra-short laser pulse characterization 

    Wang, Bingxia (Date of defense: 2017-10-10)

    The PhD project, entitled "Second harmonic generation in disordered nonlinear crystals: application to ultra-short laser pulse characterization", is devoted to the study of second harmonic generation in nonlinear ferroelectric ...

    Smart control of light in edge-emitting lasers 

    Medina Pardell, Judith (Date of defense: 2021-11-30)

    The invention of the laser triggered the study of light-matter interactions. In turn, the advent of artificial structured materials on micro- and nanometer scales has become a fruitful playground to tailor the propagation ...

    Suppression and control of modulation instability 

    Kumar, Shubham (Date of defense: 2017-06-21)

    Dynamical instabilities which lead to spontaneous pattern formation are present in a wide variety of nonlinear dynamical systems, both in nature as well as in technological areas. The instabilities may be saturating, leading ...

    Temporal correlations and dynamical transitions in semiconductor lasers with optical feedback 

    Quintero Quiroz, Carlos Alberto (Date of defense: 2017-03-16)

    Optical excitable systems that mimic neuronal behavior have potential to be building-blocks of novel, ultra-fast, neuron-inspired photonic information processing systems. In particular, semiconductor lasers with optical ...

    Ultrafast quantum control of atoms and molecules : a density matrix approach 

    Afa, Iduabo John (Date of defense: 2018-01-24)

    Control is important for transferring theoretical scientific knowledge into practical technology for applications in numerous fields. This is why coherent control study is significant on every timescale to have a complete ...