TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and applications
TOM 7 - Thermal radiation and energy management
TOM 8 - Non-linear and Quantum Optics
TOM 9 - Opto-electronic Nanotechnologies and Complex Systems
TOM 10 - Frontiers in Optical Metrology
TOM 11 - Tapered optical fibers, from fundamental to applications
TOM 12 - Optofluidics
TOM 13 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session
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TOM13 S02: Advances and Applications of Optics and Photonics
2:30pm - 4:00pm
Session Chair: Susana Novais, INESCTEC, Portugal
Ground floor, 99 seats
2:30pm - 2:45pm ID: 186 / TOM13 S02: 1 TOM 13 Advances and Applications of Optics and Photonics
Dispersion-managed monolithic all polarization-maintaining ultrafast Thulium-doped fiber oscillator
Benedikt Schuhbauer1, Andreas Wienke1,2, Frithjof Haxsen1, Jörg Neumann1,2, Dietmar Kracht1,2
1Laser Zentrum Hannover e.V., Hollerithalle 8, Hannover 30419, Germany; 2Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering Innovation Across Disciplines)
We report on our first results of a dispersion-managed monolithic polarization-maintaining ultrafast Thulium-doped fiber oscillator. The design incorporates only commercially available polarization-maintaining components and emits linearly polarized light with a polarization extinction ratio of over 17 dB . The observed optical pulse spectra with up to 10 nm width centered at 1961.5 nm beyond the water absorption lines support sub-1 ps pulse duration. The simple linear configuration and the wide spread availability of the used low cost polarization-maintaining fiber components makes the presented oscillator a valuable concept for an environmental stable seed source.
2:45pm - 3:00pm ID: 198 / TOM13 S02: 2 TOM 13 Advances and Applications of Optics and Photonics
Comparison of simulation and experimental characterization of a 4-pass diode-pumped 4-active-mirrors 1053 nm laser amplifier
Thomas Hamoudi1, Hugo Chesneau1, Thomas Dubé1, Emma Dubois1, Manon Lamy1, Cédric Maunier1, Alain Braud2, Cesare Meroni2, Patrice Camy2, Sebastien Montant1
1CEA, CESTA, F-33116 Le Barp, France; 2CIMAP-ENSICAEN, 6 boulevard du Maréchal Juin, 14050 Caen Cedex, France
In this paper, we will discuss the performances of a 4-pass diode-pumped 4-active-mirrors laser amplifier. Numerical simulations along with experimental characterization paves the way to reach 1 J at 10 Hz pulse rate at 1053 nm. Both Nd :glass and Nd :Lu :CaF2 amplifier medium performances will be compared in this amplifier.
3:00pm - 3:15pm ID: 229 / TOM13 S02: 3 TOM 13 Advances and Applications of Optics and Photonics
Controlling water-window high-harmonic generation with sub-cycle synthesized waveforms
Giulio Maria Rossi1,2, Roland E. Mainz1,2, Fabian Scheiba1,2, Miguel A. Silva-Toledo1,2, Maximilian Kubullek1,2, Franz X. Kärtner1,2
1Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany; 2Physics Department and The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
We present the first results concerning synthesizer-driven high-harmonic generation that reach the water-window region. This approach holds the promise of offering greater spectral tunability in the generation of isolated attosecond pulses and at the same time of achieving higher photon-flux, required for attosecondresolved soft X-ray transient absorption experiments.
3:15pm - 3:30pm ID: 231 / TOM13 S02: 4 TOM 13 Advances and Applications of Optics and Photonics
1INESC TEC, Portugal; 2Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Portugal
Extreme learning machines (ELMs) are a versatile machine learning technique that can be seamlessly implemented with optical systems. In short, they can be described as a network of hidden neurons with random fixed weights and biases, that generate a complex behaviour in response to an input. Yet, despite the success of the physical implementations of ELMs, there is still a lack of fundamental understanding about their optical implementations. This work makes use of an optical complex media to implement an ELM and introduce an ab-initio theoretical framework to support the experimental implementation. We validate the proposed framework, in particular, by exploring the correlation between the rank of the outputs, 𝑯, and its generalization capability, thus shedding new light into the inner workings of optical ELMs and opening paths towards future technological implementations of similar principles.