TY - JOUR A1 - Trinschek, Sarah A1 - Vorholt, Christian A1 - Wittrock, Ulrich T1 - Nonlinear dynamics in intra-cavity pumped thin-disk lasers JF - Optics Express N2 - Cross-saturation of the gain media in intra-cavity pumped lasers leads to complex dynamics of the laser power. We present experimental results and a detailed theoretical analysis of this nonlinear dynamics for an intra-cavity pumped Yb:YAG thin-disk laser in the framework of a rate-equation model. The gain medium of this laser is residing in the resonator of a conventional, diode-pumped Yb:YAG thin-disk laser. Continuous-wave operation, periodic pulse trains, and chaotic fluctuations of the optical power of both lasers were observed. The dynamics is not driven by external perturbations but arises naturally in this laser system. Further examination revealed that these modes of operation can be controlled by the resonator length of the diode-pumped laser but that the system can also show hysteresis and multi-stability. Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-132355 UR - https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-4-5755&id=447544 VL - 29 IS - 4 SP - 5755 EP - 5773 ER - TY - JOUR A1 - Trinschek, Sarah A1 - Linz, Stefan T1 - Dynamics of Attractively and Repulsively Coupled Elementary Chaotic Systems JF - International Journal of Bifurcation and Chaos Y1 - 2016 U6 - http://dx.doi.org/10.1142/S0218127416300056 VL - 26 IS - 3 SP - 1630005 ER - TY - JOUR A1 - Trinschek, Sarah A1 - John, Karin A1 - Thiele, Uwe T1 - From a thin film model for passive suspensions towards the description of osmotic biofilm spreading JF - AIMS Materias Science Y1 - 2016 U6 - http://dx.doi.org/10.3934/matersci.2016.3.1138 VL - 3 IS - 3 SP - 1138 EP - 1159 ER - TY - JOUR A1 - Trinschek, Sarah A1 - John, Karin A1 - Lecuyer, Sigolene A1 - Thiele, Uwe T1 - Continuous versus arrested spreading of biofilms at solid-gas interfaces: The role of surface forces JF - Physical Review Letters Y1 - 2017 U6 - http://dx.doi.org/10.1103/PhysRevLett.119.078003 VL - 119 IS - 7 SP - 078003 ER - TY - JOUR A1 - Thiele, Uwe A1 - Snoeijer, Jacco A1 - Trinschek, Sarah A1 - John, Karin T1 - Equilibrium contact angle and adsorption layer properties with surfactants JF - Langmuir Y1 - 2018 U6 - http://dx.doi.org/10.1021/acs.langmuir.8b00513 VL - 34 IS - 24 SP - 7210 EP - 7221 ER - TY - JOUR A1 - Wallmeyer, Bernhard A1 - Trinschek, Sarah A1 - Yigit, Sargon A1 - Thiele, Uwe A1 - Betz, Timo T1 - Collective Cell Migration in Embryogenesis Follows the Laws of Wetting JF - Biophysical Journal Y1 - 2018 U6 - http://dx.doi.org/10.1016/j.bpj.2017.11.011 VL - 114 IS - 1 SP - 213 EP - 222 ER - TY - JOUR A1 - Trinschek, Sarah A1 - John, Karin A1 - Thiele, Uwe T1 - Modelling of surfactant-driven front instabilities in spreading bacterial colonies JF - Soft Matter Y1 - 2018 U6 - http://dx.doi.org/10.1039/C8SM00422F VL - 14 IS - 22 SP - 4464 EP - 4476 ER - TY - JOUR A1 - Trinschek, Sarah A1 - Stegemerten, Fenna A1 - John, Karin A1 - Thiele, Uwe T1 - Thin-film modeling of resting and moving active droplets JF - Physical Review E Y1 - 2020 U6 - http://dx.doi.org/10.1103/PhysRevE.101.062802 VL - 101 IS - 6 SP - 062802 ER - TY - JOUR A1 - Morawetz, Klaus A1 - Trinschek, Sarah A1 - Gurevich, Evgeny T1 - Interplay of viscosity and surface tension for ripple formation by laser melting JF - Physical Review B Y1 - 2022 U6 - http://dx.doi.org/10.1103/PhysRevB.105.035415 VL - 105 IS - 3 SP - 035415 ER - TY - JOUR A1 - Bobkova, Valeriia A1 - Trinschek, Sarah A1 - Otte, Eileen A1 - Denz, Cornelia T1 - Analyzing light-structuring features of droplet lenses on liquid-repelling surfaces JF - Optics Express Y1 - 2022 U6 - http://dx.doi.org/10.1364/OE.444777 VL - 30 IS - 4 SP - 5937 EP - 5952 ER - TY - JOUR A1 - Otte, Eileen A1 - Bobkova, Valeria A1 - Trinschek, Sarah A1 - Rosales-Guzmán, Carmelo A1 - Denz, Cornelia T1 - Single-shot all-digital approach for measuring the orbital angular momentum spectrum of light JF - APL Photonics N2 - Light fields carrying orbital angular momentum (OAM) offer a broad variety of applications in which especially an accurate determination of the respective OAM spectrum, i.e., unraveling the content of OAM by its topological charge ℓ, has become a main subject. Even though various techniques have been proposed to measure the OAM spectrum of such modes, many of them fail if optical vortices have to be considered in perturbed or dynamically changing experimental systems. Here, we put forward a novel technique capable of determining the OAM spectrum of light by a single measurement shot, which specifically applies to those fields that have been distorted. Experimentally, our technique only requires to interfere the perturbed light field with a reference field. From the resulting intensity pattern, the accurate OAM spectrum is determined in an all-digital way. We demonstrate our novel approach by numerical simulations and a proof-of-concept experiment employing a model ball lens as an exemplary disturbing object. Y1 - 2022 U6 - http://dx.doi.org/10.1063/5.0086536 VL - 2022 IS - 7 SP - 086105 ER - TY - JOUR A1 - Homrighausen, Jonas A1 - Horsthemke, Ludwig A1 - Pogorzelski, Jens A1 - Trinschek, Sarah A1 - Glösekötter, Peter A1 - Gregor, Markus T1 - Edge-Machine-Learning-Assisted Robust Magnetometer Based on Randomly Oriented NV-Ensembles in Diamond JF - Sensors N2 - Quantum magnetometry based on optically detected magnetic resonance (ODMR) of nitrogen vacancy centers in nano- or micro-diamonds is a promising technology for precise magnetic-field sensors. Here, we propose a new, low-cost and stand-alone sensor setup that employs machine learning on an embedded device, so-called edge machine learning. We train an artificial neural network with data acquired from a continuous-wave ODMR setup and subsequently use this pre-trained network on the sensor device to deduce the magnitude of the magnetic field from recorded ODMR spectra. In our proposed sensor setup, a low-cost and low-power ESP32 microcontroller development board is employed to control data recording and perform inference of the network. In a proof-of-concept study, we show that the setup is capable of measuring magnetic fields with high precision and has the potential to enable robust and accessible sensor applications with a wide measuring range. Y1 - 2023 UR - https://www.mdpi.com/1424-8220/23/3/1119 U6 - http://dx.doi.org/10.3390/s23031119 VL - 23 IS - 3 ER - TY - JOUR A1 - Kiel, Frederik A1 - Trinschek, Sarah A1 - Kuchmizhak, Aleksandr A1 - Gurevich, Evgeny T1 - Colouration of diamond surfaces by laser-induced periodic surface structuring JF - Optics & Laser Technology Y1 - 2024 U6 - http://dx.doi.org/10.1016/j.optlastec.2023.109882 IS - 168 SP - 109882 ER -