Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Christian Matzdorf"'
Autor:
Timothy O. Imogore, Thorsten A. Goebel, Daniel Nwatu, Ria G. Krämer, Christian Matzdorf, Daniel Richter, Stefan Nolte
Publikováno v:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII.
Autor:
Thomas Schreiber, Stefan Kuhn, Timothy O. Imogore, Johannes Nold, Thorsten A. Goebel, Nicoletta Haarlammert, Ria G. Krämer, Stefan Nolte, Daniel Richter, Christian Matzdorf, Christian Hupel, Andreas Tünnermann
Publikováno v:
Applied optics. 60(19)
We present the inscription of narrow-linewidth fiber Bragg gratings (FBGs) into different types of multicore fibers (MCFs) using ultrashort laser pulses and the phase mask technique, which can act as notch filters. Such filters are required, e.g., to
Autor:
Stefan Nolte, Christian Matzdorf, Ria G. Krämer, Thorsten A. Goebel, Daniel Richter, Timothy O. Imogore
Publikováno v:
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Nonlinearly chirped fiber Bragg gratings (FBGs) are essential components for ultrafast fiber lasers, acting as tailored higher order dispersive elements. They can be realized using femtosecond IR lasers, which offers independency from fiber core phot
Autor:
Timothy O. Imogore, Thorsten A. Goebel, Ria G. Krämer, Christian Matzdorf, Daniel Richter, Stefan Nolte
Publikováno v:
Frontiers in Optics + Laser Science 2021.
We present an in-depth study on the evolution of the average refractive index profile of an inscribed fiber Bragg grating with respect to the femtosecond laser post-processing parameters. Herein, its influence on the spectral properties of the FBG is
Autor:
Martin Heusinger, Christian Matzdorf, Timothy O. Imogore, Stefan Nolte, Thorsten A. Goebel, Ria G. Krämer, Daniel Richter, Maximilian Heck, Uwe D. Zeitner
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV.
Atmospheric emission limits observation with ground-based telescopes in the NIR. Those emission lines are very narrow in bandwidth and thus enable for filtering them with fiber Bragg gratings to utilize the light passing in-between. We present a sche
Autor:
Thorsten A. Goebel, Christian Matzdorf, Roberto Morandotti, Stefan Nolte, Ria G. Krämer, Daniel Richter, Bennet Fischer
Publikováno v:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XX.
Autor:
Maximilian Heck, Thorsten A. Goebel, Andreas Tünnermann, Ria G. Krämer, Christian Matzdorf, Daniel Richter, Stefan Nolte, Georg Schwartz
Publikováno v:
Optics express. 27(4)
We report on the detailed investigation of the core to cladding mode coupling in femtosecond-written long period fiber gratings (LPFG). It is shown that the excitation of higher-order cladding modes with strong selectivity and high precision is possi
Autor:
Ramona Eberhardt, Fabian Stutzki, Stefan Nolte, Andreas Tünnermann, Friedrich Möller, Marco Plötner, Ria G. Krämer, Maximilian Strecker, Christian Matzdorf, Thomas Schreiber, Till Walbaum
Publikováno v:
Fiber Lasers XVI: Technology and Systems.
We present and compare the performance of bidirectionally pumped Yb-doped monolithic amplifier and oscillator setups in 20/400 μm geometry tested up to signal powers of 3.5 kW and 5 kW without the occurrence of transverse mode instabilities and main
Autor:
Malte P. Siems, Maximilian Heck, Stefan Nolte, Andreas Tünnermann, Thorsten A. Goebel, Christian Matzdorf, Georg Schwartz, Ria G. Krämer, Daniel Richter
Publikováno v:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIX.
We report on the selective modal control of tailored femtosecond-written long period fiber gratings (LPFG). It is shown that the excitation of higher order cladding modes is possible with strong selectivity and high precision. The coupling behavior o
Autor:
Ria G. Krämer, Maximilian Heck, Daniel Richter, Wilko J. Middents, Stefan Nolte, Andreas Liem, Thorsten A. Goebel, Thomas Schreiber, Christian Matzdorf, Andreas Tünnermann, Victor Bock
Publikováno v:
Optics letters. 44(4)
We investigate the high-power durability of fiber Bragg gratings written directly into an ytterbium-doped large mode area fiber using ultrashort laser pulses. The gratings were successfully integrated as a high reflector into an oscillator setup reac