Dr. Mahmoud Abdel Aziz Gaafar Profile

Dr. Mahmoud Abdel Aziz Gaafar

at Technische Univ Hamburg-Harburg

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Author

Publications (11)

Proceedings Article | 17 March 2023 Presentation

Ultrashort soliton pulses in integrated Fabry-Perot microresonators

Tobias Herr, Thibault Wildi, Mahmoud Gaafar, Thibault Voumard, Markus Ludwig

Proceedings Volume PC12424, PC124240L (2023) https://doi.org/10.1117/12.2650705

KEYWORDS: Microresonators, Solitons, Fabry–Perot interferometers, Dispersion, Waveguides, Ultrafast lasers, Spectrographs, Spectral calibration, Space mirrors, Resonators

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Proceedings Article | 14 April 2020 Presentation + Paper

Front induced transitions: refractive index fronts in dispersive waveguides

Mahmoud Gaafar, Hagen Renner, Toshihiko Baba, Manfred Eich, Alexander Yu. Petrov

Proceedings Volume 11358, 113581H (2020) https://doi.org/10.1117/12.2555751

KEYWORDS: Dispersion, Waveguides, Refractive index, Wave propagation, Photonics, Modulation

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Proceedings Article | 13 April 2020 Presentation + Paper

Optical push broom in a silicon waveguide

Mahmoud Gaafar, He Li, Xinlun Cai, Juntao Li, Manfred Eich, Alexander Yu. Petrov

Proceedings Volume 11358, 113580D (2020) https://doi.org/10.1117/12.2555758

KEYWORDS: Waveguides, Dispersion, Silicon, Refractive index, Wave propagation, Silicon photonics

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Proceedings Article | 2 March 2020 Paper

Linear Schrödinger equation for front-induced transitions close to the band edge

Mahmoud Gaafar, Hagen Renner, Alexander Yu. Petrov, Manfred Eich

Proceedings Volume 11274, 1127404 (2020) https://doi.org/10.1117/12.2540478

KEYWORDS: Dispersion, Waveguides, Wave propagation, Refractive index, Photonic crystals, Terahertz radiation, Geometrical optics, Light wave propagation, Photonic crystal fibers

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Proceedings Article | 26 February 2020 Paper

Optical reflection from a free carrier-induced front in a slow light waveguide

Mahmoud Gaafar, Dirk Jalas, Liam O’Faolain, Juntao Li, Thomas Krauss, Alexander Yu. Petrov, Manfred Eich

Proceedings Volume 11285, 112850R (2020) https://doi.org/10.1117/12.2540480

KEYWORDS: Waveguides, Photonics, Dispersion, Silicon, Refractive index, Slow light, Plasma, Wave propagation, Signal processing

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Proceedings Article | 25 February 2020 Paper

Front induced transitions in slow light and dispersive waveguides

Mahmoud A. Gaafar, Toshihiko Baba, Manfred Eich, Alexander Yu. Petrov

Proceedings Volume 11296, 112962O (2020) https://doi.org/10.1117/12.2540476

KEYWORDS: Dispersion, Waveguides, Wave propagation, Refractive index, Photonics, Slow light, Dielectrics, Modulation, Switching, Photonic crystals

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Proceedings Article | 4 March 2019 Paper

Linear Schrödinger equation with temporal evolution for front-induced indirect transitions in highly dispersive waveguides

Mahmoud Gaafar, Hagen Renner, Alexander Yu. Petrov, Manfred Eich

Proceedings Volume 10921, 109211Z (2019) https://doi.org/10.1117/12.2508831

KEYWORDS: Dispersion, Waveguides, Wave propagation, Terahertz radiation, Photonic crystals, Geometrical optics, Light wave propagation, Refractive index, Picosecond phenomena, Dielectrics

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Proceedings Article | 4 March 2019 Paper

Front-induced intraband indirect photonic transition in slow-light waveguide

Mahmoud Gaafar, Dirk Jalas, Liam O’Faolain, Juntao Li, Thomas Krauss, Alexander Yu. Petrov, Manfred Eich

Proceedings Volume 10921, 109211Y (2019) https://doi.org/10.1117/12.2508809

KEYWORDS: Waveguides, Dispersion, Refractive index, Silicon, Slow light, Solids, Geometrical optics, Signal processing, Wave propagation, Photonic crystals

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Proceedings Article | 10 March 2016 Paper

Self-mode-locked vertical-external-cavity surface-emitting laser

Arash Rahimi-Iman, Mahmoud Gaafar, Christoph Möller, Max Vaupel, Fan Zhang, Dalia Al-Nakdali, Ksenia Fedorova, Wolfgang Stolz, Edik Rafailov, Martin Koch

Proceedings Volume 9734, 97340M (2016) https://doi.org/10.1117/12.2216469

KEYWORDS: Semiconductor lasers, Semiconductors, Mode locking, Disk lasers, Laser optics, Ultrafast phenomena, Optical semiconductors, Mirrors, Quantum wells, Pulsed laser operation, Refractive index, Continuous wave operation

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Proceedings Article | 10 March 2016 Paper

A serially-connected two-chip VECSEL for dual-wavelength emission with high intracavity power

Fan Zhang, Mahmoud Gaafar, Christoph Möller, Wolfgang Stolz, Martin Koch, Arash Rahimi-Iman

Proceedings Volume 9734, 973414 (2016) https://doi.org/10.1117/12.2211607

KEYWORDS: Semiconductor lasers, Disk lasers, Continuous wave operation, Semiconductors, Wavelength tuning, High power lasers, Laser applications, Frequency conversion, Terahertz sources, Mirrors, Second-harmonic generation, Crystals, Optical filters, Terahertz radiation, Quantum wells, Dispersion, Nonlinear crystals

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Proceedings Article | 4 March 2015 Paper

Recent advances in the field of vertical-external-cavity surface-emitting lasers

Arash Rahimi-Iman, Mahmoud Gaafar, Dalia Al Nakdali, Christoph Möller, Fan Zhang, Matthias Wichmann, Mohammad Shakfa, Ksenia Fedorova, Wolfgang Stolz, Edik Rafailov, Martin Koch

Proceedings Volume 9349, 934906 (2015) https://doi.org/10.1117/12.2079182

KEYWORDS: Mode locking, Quantum wells, Mirrors, Semiconductor lasers, Pulsed laser operation, Second-harmonic generation, Picosecond phenomena, Semiconductors, Diamond, Frequency conversion

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Showing 5 of 11 publications

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