@article{52388,
  author       = {{Riese, Julia and Fasel, Henrik and Pannok, Maik and Lier, Stefan}},
  issn         = {{2352-5509}},
  journal      = {{Sustainable Production and Consumption}},
  keywords     = {{Industrial and Manufacturing Engineering, Renewable Energy, Sustainability and the Environment, Environmental Chemistry, Environmental Engineering}},
  publisher    = {{Elsevier BV}},
  title        = {{{Decentralized production concepts for bio-based polymers - implications for supply chains, costs, and the carbon footprint}}},
  doi          = {{10.1016/j.spc.2024.03.001}},
  year         = {{2024}},
}

@article{49652,
  abstract     = {{Broadband coherent anti-Stokes Raman scattering (BCARS) is a powerful spectroscopy method combining high signal intensity with spectral sensitivity, enabling rapid imaging of heterogeneous samples in biomedical research and, more recently, in crystalline materials. However, BCARS encounters spectral distortion due to a setup-dependent non-resonant background (NRB). This study assesses BCARS reproducibility through a round robin experiment using two distinct BCARS setups and crystalline materials with varying structural complexity, including diamond, 6H-SiC, KDP, and KTP. The analysis compares setup-specific NRB correction procedures, detected and NRB-removed spectra, and mode assignment. We determine the influence of BCARS setup parameters like pump wavelength, pulse width, and detection geometry and provide a practical guide for optimizing BCARS setups for solid-state applications.}},
  author       = {{Hempel, Franz and Vernuccio, Federico and König, Lukas and Buschbeck, Robin and Rüsing, Michael and Cerullo, Giulio and Polli, Dario and Eng, Lukas M.}},
  issn         = {{1559-128X}},
  journal      = {{Applied Optics}},
  keywords     = {{Atomic and Molecular Physics, and Optics, Engineering (miscellaneous), Electrical and Electronic Engineering}},
  number       = {{1}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Comparing transmission- and epi-BCARS: a round robin on solid-state materials}}},
  doi          = {{10.1364/ao.505374}},
  volume       = {{63}},
  year         = {{2024}},
}

@article{52958,
  author       = {{Boeddeker, Christoph and Subramanian, Aswin Shanmugam and Wichern, Gordon and Haeb-Umbach, Reinhold and Le Roux, Jonathan}},
  issn         = {{2329-9290}},
  journal      = {{IEEE/ACM Transactions on Audio, Speech, and Language Processing}},
  keywords     = {{Electrical and Electronic Engineering, Acoustics and Ultrasonics, Computer Science (miscellaneous), Computational Mathematics}},
  pages        = {{1185--1197}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{TS-SEP: Joint Diarization and Separation Conditioned on Estimated Speaker Embeddings}}},
  doi          = {{10.1109/taslp.2024.3350887}},
  volume       = {{32}},
  year         = {{2024}},
}

@article{59663,
  abstract     = {{Controlling the intensity of emitted light and charge current is the basis of transferring and processing information1. By contrast, robust information storage and magnetic random-access memories are implemented using the spin of the carrier and the associated magnetization in ferromagnets2. The missing link between the respective disciplines of photonics, electronics and spintronics is to modulate the circular polarization of the emitted light, rather than its intensity, by electrically controlled magnetization. Here we demonstrate that this missing link is established at room temperature and zero applied magnetic field in light-emitting diodes2,3,4,5,6,7, through the transfer of angular momentum between photons, electrons and ferromagnets. With spin–orbit torque8,9,10,11, a charge current generates also a spin current to electrically switch the magnetization. This switching determines the spin orientation of injected carriers into semiconductors, in which the transfer of angular momentum from the electron spin to photon controls the circular polarization of the emitted light2. The spin–photon conversion with the nonvolatile control of magnetization opens paths to seamlessly integrate information transfer, processing and storage. Our results provide substantial advances towards electrically controlled ultrafast modulation of circular polarization and spin injection with magnetization dynamics for the next-generation information and communication technology12, including space–light data transfer. The same operating principle in scaled-down structures or using two-dimensional materials will enable transformative opportunities for quantum information processing with spin-controlled single-photon sources, as well as for implementing spin-dependent time-resolved spectroscopies.}},
  author       = {{Dainone, Pambiang Abel and Prestes, Nicholas Figueiredo and Renucci, Pierre and Bouché, Alexandre and Morassi, Martina and Devaux, Xavier and Lindemann, Markus and George, Jean-Marie and Jaffrès, Henri and Lemaitre, Aristide and Xu, Bo and Stoffel, Mathieu and Chen, Tongxin and Lombez, Laurent and Lagarde, Delphine and Cong, Guangwei and Ma, Tianyi and Pigeat, Philippe and Vergnat, Michel and Rinnert, Hervé and Marie, Xavier and Han, Xiufeng and Mangin, Stephane and Rojas-Sánchez, Juan-Carlos and Wang, Jian-Ping and Beard, Matthew C. and Gerhardt, Nils Christopher and Žutić, Igor and Lu, Yuan}},
  issn         = {{0028-0836}},
  journal      = {{Nature}},
  keywords     = {{Lasers, LEDs and light sources, Spintronics}},
  number       = {{8005}},
  pages        = {{783--788}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Controlling the helicity of light by electrical magnetization switching}}},
  doi          = {{10.1038/s41586-024-07125-5}},
  volume       = {{627}},
  year         = {{2024}},
}

@inproceedings{52235,
  abstract     = {{Android applications collecting data from users must protect it according to the current legal frameworks. Such data protection has become even more important since the European Union rolled out the General Data Protection Regulation (GDPR). Since app developers are not legal experts, they find it difficult to write privacy-aware source code. Moreover, they have limited tool support to reason about data protection throughout their app development process.
This paper motivates the need for a static analysis approach to diagnose and explain data protection in Android apps. The analysis will recognize personal data sources in the source code, and aims to further examine the data flow originating from these sources. App developers can then address key questions about data manipulation, derived data, and the presence of technical measures. Despite challenges, we explore to what extent one can realize this analysis through static taint analysis, a common method for identifying security vulnerabilities. This is a first step towards designing a tool-based approach that aids app developers and assessors in ensuring data protection in Android apps, based on automated static program analysis. }},
  author       = {{Khedkar, Mugdha and Bodden, Eric}},
  booktitle    = {{Proceedings of the IEEE/ACM 11th International Conference on Mobile Software Engineering and Systems (MOBILESoft '24). Association for Computing Machinery, New York, NY, USA, 65–68.}},
  keywords     = {{static program analysis, data protection and privacy, GDPR compliance}},
  location     = {{Lisbon, Portugal}},
  title        = {{{Toward an Android Static Analysis Approach for Data Protection}}},
  doi          = {{10.1145/3647632.3651389}},
  year         = {{2024}},
}

@inproceedings{57895,
  abstract     = {{In our paper, we present a study in which we investigate which strategies pre-service teachers (PSTs) use to find and, if necessary, reject possible candidates for congruence theorems for quadrilaterals. This study was conducted before the PTSs attended a university geometry course. In this way, statements about learning prerequisites can be made. For the study, we analyzed group discussions of PSTs to identify typical approaches and evaluate them from a mathematical perspective. The results can be considered for the further development of courses for PSTs and generate hypotheses
for further research.}},
  author       = {{Hoffmann, Max and Schlüter, Sarah}},
  booktitle    = {{Proceedings of the Fifth Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2024, 10-14 June 2024)}},
  editor       = {{González-Martín, Alejandro S. and Gueudet, Ghislaine and Florensa, Ignasi and Lombard, Nathan}},
  keywords     = {{Teachers’ and students’ practices at university level, Transition to, across and from university mathematics, Teaching and learning of specific topics in university mathematics, Congruence, Quadrilaterals}},
  publisher    = {{Escola Univerist`aria Salesiana de Sarri`a – Univ. Aut`onoma de Barcelona and INDRUM}},
  title        = {{{How Do Advanced Pre-Service Teachers Develop Congruence Theorems for Quadrilaterals?}}},
  year         = {{2024}},
}

@article{57892,
  abstract     = {{The present paper discusses the extent to which Large Language Models (LLMs) may affect the scientific enterprise, reinforcing or mitigating existing structural inequalities expressed by the Matthew Effect and introducing a “bot delusion” in academia. In a theory-led thought experiment, we first focus on the academic publication and citation system and develop three scenarios of the anticipated consequences of using LLMs: reproducing content and status quo (Scenario 1), enabling content coherence evaluation (Scenario 2) and content evaluation (Scenario 3). Second, we discuss the interaction between the use of LLMs and academic (counter)norms for citation selection and their impact on the publication and citation system. Finally, we introduce communal counter-norms to capture academics’ loyal citation behavior and develop three future scenarios that academia may face when LLMs are widely used in the research process, namely status quo future of science, mixed-access future, and open science future.}},
  author       = {{Wieczorek, Oliver and Steinhardt, Isabel and Schmidt, Rebecca and Mauermeister, Sylvi and Schneijderberg, Christian}},
  issn         = {{0016-3287}},
  journal      = {{Futures}},
  keywords     = {{Large Language Models, Matthew Effect, Academic Publishing and Citation Systems, Scientific Norms, Thought Experiment}},
  publisher    = {{Elsevier BV}},
  title        = {{{The Bot Delusion. Large language models and anticipated consequences for academics’ publication and citation behavior}}},
  doi          = {{10.1016/j.futures.2024.103537}},
  volume       = {{166}},
  year         = {{2024}},
}

@article{58511,
  abstract     = {{We investigate differences in bribing decisions among two generations from East and West Germany in a bribery game conducted as an online study (N=168). This way, we aim to explore moral considerations of individuals influenced by two formerly different institutional systems. We find a higher propensity to bribe among young Germans compared to the older generation. Young East Germans even reveal a slightly greater inclination to bribe than their West German counterparts. We conclude that preferences for personal favors may be induced among young East Germans given the tense relationship between market opportunities and conveyed cultural traits of a socialist imprint.}},
  author       = {{Auer, Thorsten Fabian and Berg, Timo and Hoffmann, Christin}},
  issn         = {{1824-2979}},
  journal      = {{European Journal of Comparative Economics}},
  keywords     = {{Moral behavior, Corruption, Intra- and intergenerational study, Institutional transformation, Reunification}},
  number       = {{2}},
  pages        = {{211--264}},
  title        = {{{Inter- and intragenerational differences in corrupt behavior: The development of morals after German reunification}}},
  doi          = {{10.25428/1824-2979/032}},
  volume       = {{21}},
  year         = {{2024}},
}

@article{48486,
  abstract     = {{<jats:title>Abstract</jats:title><jats:sec><jats:title>Introduction</jats:title><jats:p>In Europe, most Internet searches for school‐related tasks are situated at home, where parents can support adolescents. Although the frequency (quantity) of parental support has already been analyzed, a research gap exists concerning the quality of parental support in adolescents' information‐related Internet use. The quality of parental support in the field of homework involvement is known to be a predictor of adolescents' learning motivation and academic achievement, often discussed with regard to self‐determination theory (SDT) in terms of autonomy support, structure, emotional support, and control. These categories were adapted in this study to analyze parents' support in adolescents' Internet searching activities.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>Using a mixed‐methods approach, we combined quantitative questionnaires and qualitative observations to analyze joint information‐related Internet uses. Therefore, 243 parent–adolescent dyads were surveyed and six parent–adolescent dyads were observed by videography in 2019/2020 in Germany. The adolescents were 11 years old, on average.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>The parents rated all qualities higher than the adolescents. Emotional support was rated highest by both groups, whereas structure was rated lowest. Adolescents' and parents' view on parental support differ. The qualitative study revealed parents' often interfering behavior, whereas emotional support was low. Further, the active role of adolescents was highlighted in both quantitative and qualitative data.</jats:p></jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p>By combining quantitative and qualitative approaches, we demonstrated a fruitful application of SDT in analyzing the quality of parental support during adolescents' Internet searches at home and shed light on the co‐construction of joint Internet searches.</jats:p></jats:sec>}},
  author       = {{Kurock, Ricarda and Teichert, Jeannine and Meister, Dorothee M. and Gerhardts, Lara and Buhl, Heike M. and Bonanati, Sabrina}},
  issn         = {{0140-1971}},
  journal      = {{Journal of Adolescence}},
  keywords     = {{Psychiatry and Mental health, Developmental and Educational Psychology, Social Psychology, Pediatrics, Perinatology and Child Health}},
  number       = {{3}},
  pages        = {{566--579}},
  publisher    = {{Wiley}},
  title        = {{{A mixed‐methods study of the quality of parental support during adolescents' information‐related Internet use as a co‐construction process}}},
  doi          = {{http://dx.doi.org/10.1002/jad.12264}},
  volume       = {{96}},
  year         = {{2024}},
}

@article{50009,
  abstract     = {{<jats:p> In the past decades, the notion of voice in the theorizing and teaching of academic writing has been the subject of much debate and conceptual change, especially concerning its relation to writer identity. Many newer accounts of voice and identity in academic writing draw on the dialogical concept of voice by Bakhtin. However, some theoretical and methodological inconsistencies have surfaced in the adaptions of the concept. Working from a refinement of the dialogical notion of voice based on the concepts of polyphony and interiorization, this article presents a methodological approach for analyzing voice(s) in writing. The article presents material around the evolution of an early-career researcher’s dissertation synopsis. The material is multilayered, including the writer’s text, transcripts from an interdisciplinary peer-feedback conversation with two colleagues, and a video-stimulated interview with the writer. Excerpts of the material were analyzed to trace the polyphony of interiorized voices that influenced the writing. This focus revealed the multivoicedness of academic texts as an effect of their history of coming into being. This article contributes to the question of voice and identity in academic writing from a dialogical psycholinguistic perspective by presenting a de-reifying notion of voice grounded in an understanding of writing as a polyphonic activity, which also feeds into the formation of a writer’s self. </jats:p>}},
  author       = {{Karsten, Andrea}},
  issn         = {{0741-0883}},
  journal      = {{Written Communication}},
  keywords     = {{Literature and Literary Theory, Communication}},
  number       = {{1}},
  pages        = {{6--36}},
  publisher    = {{SAGE Publications}},
  title        = {{{Voices in Dialogue: Taking Polyphony in Academic Writing Seriously}}},
  doi          = {{10.1177/07410883231207104}},
  volume       = {{41}},
  year         = {{2024}},
}

@article{52876,
  author       = {{Arends, Christian and Wolf, Lasse Lennart and Meinecke, Jasmin and Barkhofen, Sonja and Weich, Tobias and Bartley, Tim}},
  issn         = {{2643-1564}},
  journal      = {{Physical Review Research}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{1}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Decomposing large unitaries into multimode devices of arbitrary size}}},
  doi          = {{10.1103/physrevresearch.6.l012043}},
  volume       = {{6}},
  year         = {{2024}},
}

@article{51356,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>Lithium niobate has emerged as a promising platform for integrated quantum optics, enabling efficient generation, manipulation, and detection of quantum states of light. However, integrating single-photon detectors requires cryogenic operating temperatures, since the best performing detectors are based on narrow superconducting wires. While previous studies have demonstrated the operation of quantum light sources and electro-optic modulators in LiNbO<jats:sub>3</jats:sub> at cryogenic temperatures, the thermal transition between room temperature and cryogenic conditions introduces additional effects that can significantly influence device performance. In this paper, we investigate the generation of pyroelectric charges and their impact on the optical properties of lithium niobate waveguides when changing from room temperature to 25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate this with fast changes in the birefringence acquired through the Sénarmont-method. Both electrical and optical influence of the pyroelectric effect occur predominantly at temperatures above 100 K.</jats:p>}},
  author       = {{Thiele, Frederik and Hummel, Thomas and Lange, Nina Amelie and Dreher, Felix and Protte, Maximilian and Bruch, Felix vom and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}},
  issn         = {{2633-4356}},
  journal      = {{Materials for Quantum Technology}},
  keywords     = {{General Earth and Planetary Sciences, General Environmental Science}},
  number       = {{1}},
  publisher    = {{IOP Publishing}},
  title        = {{{Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics}}},
  doi          = {{10.1088/2633-4356/ad207d}},
  volume       = {{4}},
  year         = {{2024}},
}

@article{52587,
  author       = {{Bodden, Eric and Pottebaum, Jens and Fockel, Markus and Gräßler, Iris}},
  issn         = {{1540-7993}},
  journal      = {{IEEE Security & Privacy}},
  keywords     = {{Law, Electrical and Electronic Engineering, Computer Networks and Communications}},
  number       = {{1}},
  pages        = {{69--72}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{Evaluating Security Through Isolation and Defense in Depth}}},
  doi          = {{10.1109/msec.2023.3336028}},
  volume       = {{22}},
  year         = {{2024}},
}

@article{35533,
  author       = {{Büchel, Daniel and Torvik, Per Øyvind and Lehmann, Tim and Sandbakk, Øyvind and Baumeister, Jochen}},
  issn         = {{1530-0315}},
  journal      = {{Medicine & Science in Sports & Exercise}},
  keywords     = {{Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine}},
  publisher    = {{Ovid Technologies (Wolters Kluwer Health)}},
  title        = {{{The Mode of Endurance Exercise Influences Changes in EEG Resting State Graphs among High-Level Cross-Country Skiers}}},
  doi          = {{10.1249/mss.0000000000003122}},
  volume       = {{Publish Ahead of Print}},
  year         = {{2023}},
}

@article{45826,
  author       = {{Niemann, Valerie A. and Huck, Marten and Steinrück, Hans-Georg and Toney, Michael F. and Tarpeh, William A. and Bone, Sharon E.}},
  issn         = {{2690-0637}},
  journal      = {{ACS ES&T Water}},
  keywords     = {{Water Science and Technology, Environmental Chemistry, Chemistry (miscellaneous), Chemical Engineering (miscellaneous)}},
  pages        = {{2627--2637}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{X-ray Absorption Spectroscopy Reveals Mechanisms of Calcium and Silicon Fouling on Reverse Osmosis Membranes Used in Wastewater Reclamation}}},
  doi          = {{10.1021/acsestwater.3c00144}},
  volume       = {{3}},
  year         = {{2023}},
}

@article{45866,
  author       = {{Knorr, Lukas and Schlosser, Florian and Meschede, Henning}},
  issn         = {{1848-9257}},
  journal      = {{Journal of Sustainable Development of Energy, Water and Environment Systems}},
  keywords     = {{Energy Engineering and Power Technology, Water Science and Technology, Environmental Science (miscellaneous), Renewable Energy, Sustainability and the Environment}},
  number       = {{3}},
  pages        = {{0--0}},
  publisher    = {{SDEWES Centre}},
  title        = {{{Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry}}},
  doi          = {{10.13044/j.sdewes.d11.0444}},
  volume       = {{ 11}},
  year         = {{2023}},
}

@article{47800,
  abstract     = {{<jats:p>The introduction of Systems Engineering is an approach for dealing with the increasing complexity of products and their associated product development. Several introduction strategies are available in the literature; nevertheless, the introduction of Systems Engineering into practice still poses a great challenge to companies. Many companies have already gained experience in the introduction of Systems Engineering. Therefore, as part of the SE4OWL research project, the need to conduct a study including expert interviews and to collect the experiences of experts was identified. A total of 78 hypotheses were identified from 13 expert interviews concerning the lessons learned. Using exclusion criteria, 52 hypotheses were validated in a subsequent quantitative survey with 112 participants. Of these 52 hypotheses, 40 could be confirmed based on the survey results. Only four hypotheses were rejected, and eight could neither be confirmed nor rejected. Through this research, guidance is provided to companies to leverage best practices for the introduction of their own Systems Engineering and to avoid the poor practices of other companies.</jats:p>}},
  author       = {{Wilke, Daria and Grothe, Robin and Bretz, Lukas and Anacker, Harald and Dumitrescu, Roman}},
  issn         = {{2079-8954}},
  journal      = {{Systems}},
  keywords     = {{Information Systems and Management, Computer Networks and Communications, Modeling and Simulation, Control and Systems Engineering, Software}},
  number       = {{3}},
  publisher    = {{MDPI AG}},
  title        = {{{Lessons Learned from the Introduction of Systems Engineering}}},
  doi          = {{10.3390/systems11030119}},
  volume       = {{11}},
  year         = {{2023}},
}

@article{47798,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>In diesem Beitrag wird die soziotechnische Gestaltung einer Intelligenten Personaleinsatzplanung beim Unternehmen Miele &amp; Cie. KG im Rahmen des Leuchtturmprojekts „InTime“ im Kompetenzzentrum Arbeitswelt.Plus beschrieben. Hierzu werden die Durchführung und Auswertung einer Interviewreihe sowie das daraus erarbeitete Soll-Konzept vorgestellt.</jats:p>}},
  author       = {{Gabriel, Stefan and Bentler, Dominik and Bansmann, Michael and Andrew Latos, Benedikt and Kühn, Arno and Dumitrescu, Roman}},
  issn         = {{2511-0896}},
  journal      = {{Zeitschrift für wirtschaftlichen Fabrikbetrieb}},
  keywords     = {{Management Science and Operations Research, Strategy and Management, General Engineering}},
  number       = {{1-2}},
  pages        = {{64--68}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Soziotechnische Gestaltung einer intelligenten Personaleinsatzplanung}}},
  doi          = {{10.1515/zwf-2023-1009}},
  volume       = {{118}},
  year         = {{2023}},
}

@article{47993,
  abstract     = {{Structural strain severely impacts material properties, such as the linear and nonlinear optical response. Moreover, strain plays a key role, e.g., in the physics of ferroelectrics and, in particular, of their domain walls. μ-Raman spectroscopy is a well-suited technique for the investigation of such strain effects as it allows to measure the lattice dynamics locally. However, quantifying and reconstructing strain fields from Raman maps requires knowledge on the strain dependence of phonon frequencies. In this paper, we have analyzed both theoretically and experimentally the phonon frequencies in the widely used ferroelectrics lithium niobate and lithium tantalate as a function of uniaxial strain via density functional theory and μ-Raman spectroscopy. Overall, we find a good agreement between our ab initio models and the experimental data performed with a stress cell. The majority of phonons show an increase in frequency under compressive strain, whereas the opposite is observed for tensile strains. Moreover, for E-type phonons, we observe the lifting of degeneracy already at moderate strain fields (i.e., at ±0.2%) along the x and y directions. This paper, hence, allows for the systematic analysis of three-dimensional strains in modern-type bulk and thin-film devices assembled from lithium niobate and tantalate.}},
  author       = {{Singh, Ekta and Pionteck, Mike N. and Reitzig, Sven and Lange, Michael and Rüsing, Michael and Eng, Lukas M. and Sanna, Simone}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  keywords     = {{Physics and Astronomy (miscellaneous), General Materials Science}},
  number       = {{2}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Vibrational properties of LiNbO3 and LiTaO3 under uniaxial stress}}},
  doi          = {{10.1103/physrevmaterials.7.024420}},
  volume       = {{7}},
  year         = {{2023}},
}

@article{47994,
  abstract     = {{Coherent nonlinear optical μ-spectroscopy is a frequently used tool in modern material science as it is sensitive to many different local observables, which comprise, among others, crystal symmetry and vibrational properties. The richness in information, however, may come with challenges in data interpretation, as one has to disentangle the many different effects like multiple reflections, phase jumps at interfaces, or the influence of the Guoy-phase. In order to facilitate interpretation, the work presented here proposes an easy-to-use semi-analytical modeling Ansatz, which bases upon known analytical solutions using Gaussian beams. Specifically, we apply this Ansatz to compute nonlinear optical responses of (thin film) optical materials. We try to conserve the meaning of intuitive parameters like the Gouy-phase and the nonlinear coherent interaction length. In particular, the concept of coherence length is extended, which is a must when using focal beams. The model is subsequently applied to exemplary cases of second- and third-harmonic generation. We observe a very good agreement with experimental data, and furthermore, despite the constraints and limits of the analytical Ansatz, our model performs similarly well as when using more rigorous simulations. However, it outperforms the latter in terms of computational power, requiring more than three orders less computational time and less performant computer systems.}},
  author       = {{Spychala, Kai J. and Amber, Zeeshan H. and Eng, Lukas M. and Rüsing, Michael}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{12}},
  publisher    = {{AIP Publishing}},
  title        = {{{Modeling nonlinear optical interactions of focused beams in bulk crystals and thin films: A phenomenological approach}}},
  doi          = {{10.1063/5.0136252}},
  volume       = {{133}},
  year         = {{2023}},
}