Dr. Alexander Hartung Profile

Dr. Alexander Hartung

at Leibniz-Institut für Photonische Technologien eV

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 20 June 2024 Presentation + Paper

Investigating nonlinear unidirectional operation in a fiber ring laser

Alexander Hartung, Muhammad Assad Arshad, Matthias Jäger

Proceedings Volume 13003, 1300306 (2024) https://doi.org/10.1117/12.3022361

KEYWORDS: Ring lasers, Fiber lasers, Optical filters, Raman scattering, Output couplers, Switching

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Proceedings Article | 20 June 2024 Presentation + Paper

Visible Pr3+-doped fluoride glass fiber laser

Martin Leich, Alexander Hartung, Anka Schwuchow, Tina Eschrich, Kay Schaarschmidt, Matthias Jäger

Proceedings Volume 13003, 130030F (2024) https://doi.org/10.1117/12.3016980

KEYWORDS: Fiber lasers, Glasses, Laser resonators, Fluoride, ZBLAN, Praseodymium, Visible radiation

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Proceedings Article | 13 May 2024 Presentation

Visible fluoride glass fiber laser with 1.3 W output power

Martin Leich, Alexander Hartung, Anka Schwuchow, Tina Eschrich, Kay Schaarschmidt, Matthias Jäger

Proceedings Volume PC12865, PC1286506 (2024) https://doi.org/10.1117/12.3000310

KEYWORDS: Fiber lasers, Glasses, Fluoride, ZBLAN, Laser resonators, Near infrared, Light absorption, Laser applications, Ions, Biomedical applications

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Proceedings Article | 13 May 2024 Presentation

Induction and control of directionality in reciprocal fiber ring laser by simple fiber end face reflections

Muhammad Assad Arshad, Alexander Hartung, Matthias Jäger

Proceedings Volume PC12865, PC1286505 (2024) https://doi.org/10.1117/12.3005266

KEYWORDS: Fiber lasers, Signal attenuation, Reflection, Ring lasers, Wave propagation, Wavelength division multiplexing, Raman spectroscopy, Laser damage threshold, Raman scattering, Output couplers

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Proceedings Article | 5 March 2021 Presentation

Unidirectional lasing using loss management in a reciprocal fiber ring laser

Muhammad Arshad, Arni Pratiwi, Alexander Hartung, Matthias Jäger

Proceedings Volume 11665, 116651O (2021) https://doi.org/10.1117/12.2582086

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Proceedings Article | 14 April 2020 Presentation + Paper

Tunable fiber laser concepts in the 2µm spectral range for tunable dual wavelength emission

Tobias Tiess, Alexander Hartung, Martin Becker, Manfred Rothhardt, Romain Dauliat, Baptiste Leconte, Georges Humbert, Philippe Roy, Matthias Jäger

Proceedings Volume 11357, 1135714 (2020) https://doi.org/10.1117/12.2559948

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Four wave mixing, Terahertz radiation, Q switching, Bragg cells, Optical amplifiers, Thulium, Tunable lasers, Fiber amplifiers

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Proceedings Article | 16 April 2019 Paper

OH diffusion effects at preparation of antiresonant hollow core fibers

J. Kobelke, J. Bierlich, K. Schuster, A. Lorenz, A. Hartung, A. Schwuchow, K. Wondraczek, T. Frosch, M. Schmidt

Proceedings Volume 11029, 1102904 (2019) https://doi.org/10.1117/12.2506589

KEYWORDS: Diffusion, Silica, Optical fibers

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Proceedings Article | 17 May 2018 Paper

Raman-based cw supercontinuum generation in a fiber ring laser with low-output coupling

Muhammad Assad Arshad, Alexander Hartung, Mikaёl Leduc, Nicolas Godbout, Hartmut Bartelt, Matthias Jäger

Proceedings Volume 10683, 106833F (2018) https://doi.org/10.1117/12.2311626

KEYWORDS: Diodes, Fiber lasers, Supercontinuum generation, Wave propagation, Continuous wave operation, Dispersion, Raman scattering, Signal attenuation, Semiconductor lasers, Feedback signals

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Proceedings Article | 15 May 2014 Paper

Trends and future of fiber Bragg grating sensing technologies: tailored draw tower gratings (DTGs)

E. Lindner, A. Hartung, D. Hoh, C. Chojetzki, K. Schuster, J. Bierlich, M. Rothhardt

Proceedings Volume 9141, 91410X (2014) https://doi.org/10.1117/12.2060073

KEYWORDS: Fiber Bragg gratings, Sensors, Optical fibers, Temperature metrology, Ultraviolet radiation, Reflection, Refractive index, Fiber coatings, Copper, Telecommunications

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Proceedings Article | 7 March 2014 Paper

Investigation of a large core 976nm Yb fiber laser for high brightness fiber-based pump sources

Martin Leich, Matthias Jäger, Stephan Grimm, Jan Dellith, Denny Hoh, Sylvia Jetschke, Martin Becker, Alexander Hartung, Tina Eschrich, Jens Kobelke, Hartmut Bartelt

Proceedings Volume 8961, 89610Z (2014) https://doi.org/10.1117/12.2039169

KEYWORDS: Fiber lasers, Ytterbium, Laser resonators, Fiber Bragg gratings, Refractive index, Glasses, Resonators, Fiber couplers, Diodes, Semiconductor lasers

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Proceedings Article | 9 May 2012 Paper

Interferometric inscription of volume Bragg gratings in a commercial high-refractive index glass (S-TIH53) by 400 nm femtosecond (fs) laser pulses

T. Elsmann, A. Hartung, E. Lindner, M. Rothhardt, H. Bartelt

Proceedings Volume 8428, 84280H (2012) https://doi.org/10.1117/12.921787

KEYWORDS: Glasses, Fiber Bragg gratings, Absorption, Refractive index, Reflectivity, Interferometers, Reflection, Interferometry, Microscopes, Femtosecond phenomena

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Proceedings Article | 15 February 2012 Paper

High-quality 3.6-fs pulses by compression of an octave-spanning supercontinuum

Jan Rothhardt, Stefan Demmler, Alexander Heidt, Alexander Hartung, Hartmut Bartelt, Erich Rohwer, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8240, 82400Z (2012) https://doi.org/10.1117/12.908390

KEYWORDS: Dispersion, Optical fibers, Mirrors, Phase measurement, Physics, Phase shift keying, Modulation, Solids, Oscillators, Spatial light modulators

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Proceedings Article | 11 May 2011 Paper

Dispersion design of all-normal dispersive microstructured optical fibers for coherent supercontinuum generation

Alexander Hartung, Alexander Heidt, Hartmut Bartelt

Proceedings Volume 8073, 80732Q (2011) https://doi.org/10.1117/12.886684

KEYWORDS: Dispersion, Nanofibers, Silica, Optical fibers, Structured optical fibers, Supercontinuum generation, Near infrared, Solitons, Waveguides, Photonic crystal fibers

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Proceedings Article | 10 May 2011 Paper

Preparation and characterization of microstructured silica holey fibers filled with high-index glasses

J. Kobelke, R. Spittel, D. Hoh, K. Schuster, A. Schwuchow, F. Jahn, F. Just, C. Segel, A. Hartung, J. Kirchhof, H. Bartelt

Proceedings Volume 8073, 80732F (2011) https://doi.org/10.1117/12.886243

KEYWORDS: Optical fibers, Arsenic, Glasses, Capillaries, Silica, Micro optical fluidics, Chalcogenide glass, Refractive index, Cladding, Liquids

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Proceedings Article | 14 October 2010 Paper

Infrared, visible, and ultraviolet broadband coherent supercontinuum generation in all-normal dispersion fibers

Alexander Heidt, Alexander Hartung, Erich Rohwer, Hartmut Bartelt

Proceedings Volume 7839, 78390X (2010) https://doi.org/10.1117/12.867101

KEYWORDS: Optical fibers, Dispersion, Nanofibers, Ultraviolet radiation, Visible radiation, Solitons, Infrared radiation, Modulation, Supercontinuum generation, Femtosecond phenomena

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Proceedings Article | 15 May 2010 Paper

Dispersion tailored microstructured fibers: core dopant effects

J. Kobelke, K. Schuster, R. Spittel, A. Hartung, A. Schwuchow, J. Kirchhof, H. Bartelt

Proceedings Volume 7714, 771416 (2010) https://doi.org/10.1117/12.853636

KEYWORDS: Micro optical fluidics, Dispersion, Silica, Germanium, Cladding, Glasses, Waveguides, Manufacturing, Absorption, Optical fibers

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Proceedings Article | 28 April 2010 Paper

Deep ultraviolet supercontinuum generation in optical nanofibers by femtosecond pulses at 400-nm wavelength

Alexander Heidt, Alexander Hartung, Hartmut Bartelt

Proceedings Volume 7714, 771407 (2010) https://doi.org/10.1117/12.854279

KEYWORDS: Optical fibers, Nanofibers, Dispersion, Wave propagation, Supercontinuum generation, Femtosecond phenomena, Deep ultraviolet, UV optics, Waveguides, Ultraviolet radiation

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Showing 5 of 17 publications

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