Horn, Alexander

Prof. Dr. rer. nat. habil.

Positionen

Professor, Fachgruppe Physik und Lasertechnik, Fachgebiet Lasertechnik, Fakultät Ingenieurwissenschaften

Forschungsgebiete

- Ultrakurzpulslasermesstechnik
- Ultrakurzpulslasermaterialbearbeitung organischer Dünnschichtsysteme
- Prozessdiagnose und Modellierung ultraschneller laserinduzierten Prozesse
- laserinduzierte selektive Prozesse für die organische Elektronik und Life-Sciences
- nichtlineare und kohärente Prozesse bei der Lasermikro- und -nanobearbeitung

Forschungsschwerpunkt

Lasertechnologien Forschungsschwerpunkt

Projektleitung

Projektmitgliedschaft

Vorhandene Laser-Infrastruktur stärken und mit der Biophotonik die Zukunft der Laserforschung an der Hochschule Mittweida gestalten – BIOphotonik und LAsertechnologien Sachsen (BIOLASAX), Teilprojekt Biophotonik - Laseranwendung in der Biologie finanziert durch Deutsche Forschungsgemeinschaft 2022 - 2024
Ultrapräzisions-Laserbearbeitung (UltraLas) finanziert durch Europäische Union 2015 - 2018

ausgewählte Publikationen

Journalartikel
- Transient ablation topography of a thin chromium film after ultrashort pulsed laser irradiation in the spallation and phase explosion regime. Optics & Laser Technology. 110540. 2024
- Experimental study on the ablation of stainless steel using multiple ultra-short laser pulses with tunable time delays. Applied Physics A. 674. 2023
- Laser‐Induced Positional and Chemical Lattice Reordering Generating Ferromagnetism. Advanced Functional Materials. 2023
- Electron dynamics in fused silica after strong field laser excitation detected by spectroscopic imaging pump-probe ellipsometry. Physical Review B. 014307. 2022
- Transmission windows of charge transport layers and electrodes in highly transparent organic solar cells for agrivoltaic application. AIP Conference Proceedings. 2022
- Fluence-Dependent Transient Reflectance of Stainless Steel Investigated by Ultrafast Imaging Pump–Probe Reflectometry. The Journal of Physical Chemistry C. 17363-17371. 2021
- Improved Hole Extraction Selectivity of Polymer Solar Cells by Combining PEDOT:PSS with WO3. Energy Technology. 2100474. 2021
- Local Optical Properties in CVD-Grown Monolayer WS2 Flakes. The Journal of Physical Chemistry C. 16059-16065. 2021
- Study on X-ray Emission Using Ultrashort Pulsed Lasers in Materials Processing. Materials. 4537. 2021
- Topological transition from deeply sub- to near-wavelength ripples during multi-shot mid-IR femtosecond laser exposure of a silicon surface. Optical Materials Express. 1-11. 2021
- X-ray generation by laser ablation using MHz to GHz pulse bursts. Journal of Laser Applications. 032014. 2021
- Experimental and Theoretical Determination of the Effective Penetration Depth of Ultrafast Laser Radiation in Stainless Steel. Lasers in Manufacturing and Materials Processing. 478-495. 2020
- Hydrodynamic modeling and time-resolved imaging reflectometry of the ultrafast laser-induced ablation of a thin gold film. Optics and Lasers in Engineering. 106067. 2020
- Exchange bias and diffusion processes in laser annealed CoFeB/IrMn thin films. Journal of Magnetism and Magnetic Materials. 165390. 2019
- Femtosecond-time-resolved imaging of the dielectric function of ZnO in the visible to near-IR spectral range. Applied Physics Letters. 212103. 2019
- Surface Modifications of Poly(methyl methacrylate) Induced by Controlled Electronic and Molecular Vibrational Excitation Applying Ultrafast Mid-IR Laser Radiation. The Journal of Physical Chemistry C. 20210-20220. 2019
- Case study on the dynamics of ultrafast laser heating and ablation of gold thin films by ultrafast pump-probe reflectometry and ellipsometry. Applied Physics A. 116. 2018
- Investigations on the modification of PMMA by ultrafast laser radiation from the UV to the mid-IR spectral range. Optics and Lasers in Engineering. 130-134. 2018
- Generation of nano-voids inside polylactide using femtosecond laser radiation. Applied Physics A. 789. 2017
- Case study on the ultrafast laser ablation of thin aluminum films: dependence on laser parameters and film thickness. Applied Physics A. 215. 2016
- Simulation of the spherical aberration by focusing laser radiation in transparent materials: Comparison of different simulation approaches. Applied Physics A. 219. 2016
- Laser induced quasi-periodical microstructures with external field modulation for efficient gain in photovoltaics. CIRP Annals - Manufacturing Technology. 207-210. 2013
- Dynamical detection of optical phase changes during micro-welding of glass with ultra-short laser radiation. Measurement Science and Technology. 015302. 2008
- In situ measurement of plasma and shock wave properties inside laser-drilled metal holes. Measurement Science and Technology. 105703. 2008
- Si-Ka radiation generated by the interaction of femtosecond laser radiation with silicon. Journal of Physics: Conference Series. 159-163. 2007
- Herstellung eines Mikroaktors auf der Basis lasergestützter Strukturierung von PVD-abgeschiedenen Bimetallstrukturen. Plus Produktion von Leiterplatte und Systemen. 815-821. 2004
Konferenzpaper
- Untersuchung der transienten optischen Eigenschaften von SiO2 nach nichtlinearer Anregung mit ultrakurz gepulster Laserstrahlung. Scientific Reports 2023, 13. Mittweidaer Lasertagung. 53-56. 2023
- Untersuchungen zur Bestrahlung von Goldschichten mit Doppelpulsen von ultrakurz gepulster Laserstrahlung. Scientific Reports 2023, 13. Mittweidaer Lasertagung. 36-40. 2023
- Untersuchungen zur Spallation und Phasenexplosion an Chromschichten mittels Pump-Probe Reflektometrie. DVS Berichte. 44-49. 2022
- Validierung der Modellierung der Ablationsdynamik dünner Goldschichten induziert durch ultrakurz gepulste Laserstrahlung. DVS Berichte. 50-55. 2022
- Bestrahlung einer dicken Goldschicht mit Einzelpulsen von ultrakurz gepulster Laserstrahlung. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 139-142. 2021
- Entstehung unerwünschter Röntgenstrahlung bei der Ultrakurzpuls-Laserbearbeitung. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 91-99. 2021
- Excitation and ablation of P3HT with spectral shaped ultrafast mid-IR laser radiation. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 135-138. 2021
- Excitation and ablation of P3HT with spectral shaped ultrafast mid-IR laser radiation. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 2021
- Laser induced crystallization of Co–Fe–B films. Scientific Reports. 14104. 2021
- Laserbestrahlung als neues Verfahren zur Modifikation und Optimierung magnetischer Tunnelübergänge. Innovative Verfahren der Lasermaterialbearbeitung, DVS Berichte. 94-99. 2021
- Laserinduzierte Kristallisation dünner Co-Fe-B-Schichten. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 115-118. 2021
- Spatial Conductivity Distribution in Thin PEDOT:PSS Films after Laser Microannealing. ACS Applied Electronic Materials. 2825-2831. 2021
- Ultrakurzpuls Lasermesstechnik in der Lasermikromaterialbearbeitung. Innovative Verfahren der Lasermaterialbearbeitung, DVS Berichte. 247. 2021
- Ultraschnelle zeit- und ortsaufgelöste Reflektometrie an der Rückseite von Goldschichten verschiedener Schichtdicke. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 143-146. 2021
- Untersuchungen zur fluenzabhängigen transienten Reflektivität von Edelstahl nach Anregung mit ultrakurz gepulster Laserstrahlung. Scientific Reports 2021, 12. Mittweidaer Lasertagung. 103-105. 2021
- Dynamik des komplexen Brechungsindexes von Gold nach Anregung mit ultrakurz gepulster Laserstrahlung. Scientific Reports 2019, 11. Mittweidaer Lasertagung. 177-180. 2019
- Modellierung und zeitaufgelöste Messung des Abtrages von Goldschichten unterschiedlicher Schichtdicke durch ultrakurz gepulster Laserstrahlung. Scientific Reports 2019, 11. Mittweidaer Lasertagung. 45-49. 2019
- Simulation der optischen Antwort aufgrund von Höhenänderungen von angeregten Goldschichten nach Bestrahlung mit ultrakurz gepulster Laserstrahlung. Scientific Reports 2019, 11. Mittweidaer Lasertagung. 164-169. 2019
- Untersuchung der Anregungsmechanismen von PMMA mit ultrakurz gepulster mid-IR Laserstrahlung. Scientific Reports 2019, 11. Mittweidaer Lasertagung. 62-65. 2019
- Solving the logarithmic Monge-Ampère equation with a RK4-algorithm for beam shaping purposes of femtosecond laser beams with a spatial light modulator. Proceedings of SPIE. 2018
- Konzeption und Aufbau eines orts- und zeitaufgelösten Ellipsometers zur Laser-Prozessanalyse. Scientific Reports 2017, 18. Nachwuchswissenschaftlerkonferenz (NWK). 94-99. 2017
- Untersuchung der dynamischen Prozesse beim Erwärmen und Abtragen dünner Goldschichten nach Anregung mit ultrakurz gepulster Strahlung. Scientific Reports 2017, 10. Mittweidaer Lasertagung. 119-122. 2017
- Untersuchungen zu Resonant-Infraroter Laserablation (RIA) an PMMA und BK7 Glas durch ultrakurz gepulster Laserstrahlung. Scientific Reports 2017, 10. Mittweidaer Lasertagung. 18-21. 2017
- Vergleich verschiedener physikalischer Modelle zur Beschreibung der polarisationsabhängigen Reflektometrie und Ellipsometrie. Scientific Reports 2017, 10. Mittweidaer Lasertagung. 111-114. 2017
- Simulation of the spherical aberration of focused laser radiation in transparent materials: comparison of different simulation approaches. Applied Physics A. 482. 2016
- Simulation der Temperaturverteilung in Gold und Platin infolge der Bestrahlung mit ultrakurzen Pulsen. Scientific Reports 2015, Lasertechnik. 175-178. 2015
- Einzelpulsabtrag von Metallschichten mit ultrakurzen Laserpulsen unterschiedlicher Pulsdauer. Scientific Reports 2015, Lasertechnik. 196-200. 2015
- Black silicon solar cell processing with high repetitive laser systems. Proceedings of the 27th European Photovoltaic Solar Energy Conference. 2012
- Development of a time-resolved white-light interference microscope for optical phase measurements during fs-laser material processing. Applied Physics A. 231-235. 2010
- Time-resolved white-light interferometry for ultrafast metrology. AIP Conference Proceedings. 891. 2010
- Melt dynamics of aluminum irradiated with ultrafast laser radiation at large intensities. Journal of Applied Physics. 2009
- Micro-welding of glass by fs-laser irradiation and process observation using fs-pump-probe white light interference microscopy. Proceedings of the Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference. 2009
- Optical Phase Measurements during fs-Processing of Materials Using Time-Resolved White-Light Interferometry. Proceedings of the Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference. 2009
- Investigation of increased drilling speed by online high-speed photography. Optics and Lasers in Engineering. 705-710. 2008
- Investigations of the ultrafast laser induced melt dynamics by means of transient quantitative phase microscopy (TQPm). Proceedings of SPIE. 2008
- Investigations on melting and welding of glass by ultra-short laser Radiation. Journal of Laser Micro/Nanoengineering. 114-118. 2008
- Investigations on ultrafast welding of glass-glass and glass-silicon. Applied Physics A. 171-175. 2008
- Joining of thin glass with semiconductors by ultra-fast high-repetition laser welding. Proceedings of SPIE. 2008
- Non-interferometric transient quantitative phase microscopy for ultrafast engineering. Applied Physics A. 165-169. 2008
- High-precision, high-throughput fusion welding of glass using femtosecond laser pulses. Journal of Laser Micro/Nanoengineering. 57-63. 2007
- Local melting of glass material and its application to direct fusion welding by ps-laser pulses. Journal of Laser Micro/Nanoengineering. 7-14. 2007
- Time-resolved investigations of plasma and melt ejections in metals by pump-probe shadowgraphy. Applied Physics A. 917-920. 2007
- Observation of melt ejection in metals up to 1 µs after femtosecond laser irradiation by a novel pump-probe photography setup. Proceedings of SPIE. 2006
- Subwavelength ripple formation induced by tightly focused femtosecond laser radiation. Applied Surface Science. 8576-8579. 2006
- Ultra-fast diagnostics of laser-induced melting of matter. Journal of Laser Micro/Nanoengineering. 264-268. 2006
- Coloured marking inside glass by laser radiation. Proceedings of SPIE. 2005
- Electron excitation in glasses followed by time- and space-measuring tools. Applied Surface Science. 66-70. 2005
- Approximate model for laser trepanning with microsecond Nd:YAG laser radiation. Applied Physics A. 1157-1159. 2004
- Electron excitation in glasses and sapphire followed by time- and space-measuring tools. Proceedings of SPIE. 239. 2004
- Formation of subwavelength-laser-induced periodic surface structures by tightly focused femtosecond laser radiation. Proceedings of SPIE. 168. 2004
- Time-resolved-photography and transient absorption spectroscopy of excited dielectrics by infrared ultrashort laser radiation. Proceedings of the 1st Pacific International Conference on Applications of Lasers and Optics. 1-4. 2004
- Ultrafast time-resolved photography of femtosecond laser induced modifications in BK7 glass and fused silica. Applied Physics A. 923-925. 2004
- Theoretical analysis of second harmonic characteristics generated by KTiOPO4 crystal. Proceedings of SPIE. 514. 2003
- Ultrafast Pump and Probe Investigations on the Interaction of Femtosecond Laser Pulses with Glass. Proceedings of SPIE. 393-400. 2003
- Drilling of cooling holes and shaping of blow-out facilities in turbine blades by laser radiation. Materials for Advances Power Engineering 2002. 743-750. 2002
- Time Resolved Optomechanical Investigations on the Interaction of Laser Radiation with Glass in the Femtosecond Regime. Proceedings of International Congress on Applications of Lasers & Electro-Optics. 1577-1585. 2002
- UV laser radiation-induced modifications and microstructuring of glass. Proceedings of SPIE. 258. 2002
- Dynamics of laser-induced cracking in glasses at a picosecond time scale. Proceedings of SPIE. 539-544. 2001
- Nd:YAG laser micromachining of SiC precision structures for MEMS. Proceedings of SPIE. 109. 2001
- Electron beam-physical vapor deposition - thermal barrier coatings on laser drilled surfaces for transpiration cooling. Surface and Coatings Technology. 49-53. 2000
- Microholes in zirconia coated Ni-superalloys for transpiration cooling of turbine blades. Proceedings of SPIE. 218-226. 2000
- Drilling of ceramics and polymers by diode pumped solid state laser. Proceedings of International Congress on Applications of Lasers & Electro-Optics. 1997
Konferenzposter
- Spectroscopic Pump-Probe-Reflectometry of NIR Excited Silicon. Scientific Reports 2023, 13. Mittweidaer Lasertagung. 162-166. 2023
- Untersuchungen zur Laserfilamentierung mit ultrakurz gepulster Laserstrahlung. Scientific Reports 2023, 13. Mittweidaer Lasertagung. 167-170. 2023
- Case study on the ultrafast laser ablation of thin aluminium films: dependence on laser parameters and film thickness 2015
Monographie
Sammelbandbeitrag
- Investigation on the Ablation of thin Metal Films with Femtosecond to Picosecond-pulsed Laser Radiation. Physics Procedia. 93-103. 2016
- Micromachining. Springer Series in Optical Sciences. 155-173. 2016
- Modifications in glass induced by femtosecond laser radiation. 4th Student Scientific Conference on Solid State Physics, SSCSSP-4. 2014
- Strukturieren mit Laserstrahlung. Schweizer Verband für die Materialtechnik. 4-8. 2000
Wissenschaftliche Vortragsfolien
- Front and rear surface ablation within gold films with variable film thickness induced by ultrafast laser radiation 2022

Präsentationen auf Veranstaltungen

SIMULATION DER TEMPERATURVERTEILUNGEN IN GOLD UND PLATIN INFOLGE DER BESTRAHLUNG MIT ULTRAKURZEN LASERPULSEN, vortragende Person 2015

Mitwirkung in einer Organisation

Organic Electronics Saxony e.V. Vereinsmitglied 2014 -

betreut/e wissenschaftliche Arbeit

Masterarbeit
- Untersuchungen zur ultraschnellen Ellipsometrie von Laserprozessen bearbeitet durch Pflug, Theo 2017
- Untersuchung der Ablationsdynamik dünner Metallschichten durch ultrakurz gepulste Laserstrahlung bearbeitet durch Frank, Matthias 2017
- Validierung des Systems "Multimarkermonitor" auf der Basis eines GC-IMS für die Nutzung in der medizinischen Diagnostik als Screeningmethode bearbeitet durch Räßler, Tobias 2015
Promotion
- Strong field excitation of electrons into lacalized states of fused silica bearbeitet durch Pflug, Theo 2017 - 2022
- Multiphysikalische Simulationen in der Lasermaterialbearbeitung unter Beachtung der Schmelzbaddynamik und Plasmaausbildung bearbeitet durch Olbrich, Markus 2014 -

hat Großgeräte

vollständiger Name

Prof. Dr. rer. nat. habil. Alexander Horn

Raum

42-102

Besucheradresse

Am Schwanenteich 4b

Mittweida

09648

Deutschland
Schillerstr. 10

Mittweida

09648

Deutschland

Postadresse

Technikumplatz 17

Mittweida

09648

Deutschland

KoautorInnen-Netzwerk

Koforscher-Netzwerk

Kontaktdaten

horn4@hs-mittweida.de

+49 3727 581069

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