Marwan Abdou Ahmed

发表

Ultrafast thin-disk multipass amplifier with 1.4 kW average power and 4.7 mJ pulse energy at 1030 nm converted to 820 W and 2.7 mJ at 515 nm

Thomas Graf, Dominik Bauer, Alexander Killi, 2015, Photonics West - Lasers and Applications in Science and Engineering.

Controlling the thermally induced focal shift in laser processing heads

Armin Austerschulte, Rudolf Weber, Thomas Graf, 2012, LASE.

Efficiency and power scaling of in-well and multi-pass pumped AlGaInP VECSELs

Thomas Graf, Uwe Brauch, Roman Bek, 2016, SPIE LASE.

Active mirrors for intra-cavity compensation of the aspherical thermal lens in thin-disk lasers

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, LASE.

First demonstration of passively mode-locked Yb:CaF2 thin-disk laser

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2015, Photonics West - Lasers and Applications in Science and Engineering.

A 1.78 μJ and 285fs Yb:CaF2 SESAM-modelocked thin-disk oscillator

Thomas Graf, Marwan Abdou Ahmed, Benjamin Dannecker, 2016, SPIE Photonics Europe.

Thin-disk multipass amplifier for ultrashort laser pulses with kilowatt average output power and mJ pulse energies

Thomas Graf, Dominik Bauer, Dirk Sutter, 2014, Photonics Europe.

Radially polarized high-power lasers

Armin Austerschulte, Thomas Graf, Joachim Schulz, 2008, International Symposium on High Power Laser Systems and Applications.

Thin-disk multipass amplifier emitting radially polarized beam with 635 W of average power and 2.1 mJ of pulse energy

Thomas Graf, Jan-Philipp Negel, André Loescher, 2016, SPIE Photonics Europe.

Investigation on thermal behavior of resonant waveguide-grating mirrors in an Yb:YAG thin-disk laser

Thomas Graf, Michael Möller, Christian Moormann, 2014, Photonics Europe.

Radially polarized Yb:YAG thin-disc laser

Armin Austerschulte, Thomas Graf, Andreas Voss, 2008, SPIE Photonics Europe.

High-efficiency wavelength and polarization selective grating-waveguide structures for Yb:YAG thin-disk lasers

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, Photonics Europe.

The amazing progress of high-power ultrafast thin-disk lasers

Thomas Metzger, Dirk Sutter, Marwan Abdou Ahmed, 2019, Journal of the European Optical Society-Rapid Publications.

800 W cw nearly diffraction-limited beam delivery through a 100 m long multi-mode fiber

Armin Austerschulte, Thomas Graf, Jan-Philipp Negel, 2012, Other Conferences.

Generation of radial polarization in Nd:YAG and CO2 lasers and its applications

Valerio Romano, Thomas Graf, Eduard Wyss, 2005, SPIE LASE.

Grating waveguide structures for intracavity generation of beams with azimuthal polarization in an Yb:YAG thin-disk laser

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, Photonics Europe.

Schemes for efficient QW pumping of AlGaInP disk lasers

Thomas Graf, Hermann Kahle, Cherry May N. Mateo, 2017, LASE.

Efficient generation of cylindrically polarized beams in an Yb:YAG thin-disk laser enabled by a ring-shaped pumping distribution

Thomas Graf, Marwan Abdou Ahmed, Tom Dietrich, 2016, SPIE Photonics Europe.

Self-compensation of thermal lensing in optics for high-brightness solid-state lasers

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, LASE.

Continuous single pulse resolved measurement of beam diameters at 200 kHz using optical transmission filters

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, LASE.

Recent improvements in LIDT of optical components for pulsed and CW applications

Marwan Abdou Ahmed, Martin Rumpel, Lars Mechold, 2017, Laser Damage.

Investigation of bending effects on evanescent-field coupled waveguides designed for high-power fundamental-mode delivery systems

Thomas Graf, Marwan Abdou Ahmed, Andreas Voß, 2008, SPIE Photonics Europe.

High-power Yb:YAG single-crystal fiber amplifiers for femtosecond lasers

Thomas Graf, Igor Martial, Julien Didierjean, 2015, Photonics West - Lasers and Applications in Science and Engineering.

Development of high-power ultrafast lasers: Quo Vadis

Marwan Abdou Ahmed, 2021 .

Development of high-power laser ablation process for polycrystalline diamond polishing: part 3. processing with an ultra-short-pulsed laser up to 1kW

Martin Delaigue, Marwan Abdou Ahmed, Clemens Hönninger, 2021, LASE.

Broadband pulse compression gratings with measured 99.7% diffraction efficiency.

Thomas Graf, Michael Moeller, Christian Moormann, 2014, Optics letters.

Enhanced performance of thin-disk lasers by pumping into the zero-phonon line.

Thomas Graf, Andreas Voss, Marwan Abdou Ahmed, 2012, Optics letters.

1.1 kW average output power from a thin-disk multipass amplifier for ultrashort laser pulses.

Thomas Graf, Dominik Bauer, Dirk Sutter, 2013, Optics letters.

Radially polarized emission with 635 W of average power and 2.1 mJ of pulse energy generated by an ultrafast thin-disk multipass amplifier.

Thomas Graf, Jan-Philipp Negel, André Loescher, 2015, Optics letters.

High-power Yb:YAG single-crystal fiber amplifiers for femtosecond lasers in cylindrical polarization.

Patrick Georges, Thomas Graf, Igor Martial, 2015, Optics letters.

High-quality processing of CFRP with a 1.1-kW picosecond laser

Rudolf Weber, Thomas Graf, Jan-Philipp Negel, 2015 .

Passive compensation of the misalignment instability caused by air convection in thin-disk lasers.

Thomas Graf, Marwan Abdou Ahmed, Stefan Piehler, 2017, Optics letters.

2.5 W continuous wave output at 665 nm from a multipass and quantum-well-pumped AlGaInP vertical-external-cavity surface-emitting laser.

Thomas Graf, Uwe Brauch, Michael Jetter, 2016, Optics letters.