Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2019Transverse single-mode operation in a passive large pitch fiber with more than 200  μm mode-field diameter
Steinkopff, A.; Jauregui, C.; Stutzki, F.; Nold, J.; Hupel, C.; Haarlammert, N.; Bierlich, J.; Tünnermann, A.; Limpert, J.
Journal Article
2018Active materials for high-power fiber lasers prepared by all-solution doping technique
Kuhn, S.; Möller, F.; Hupel, C.; Hein, S.; Beier, F.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2018Experimental investigations on the TMI thresholds of low-NA Yb-doped single-mode fibers
Beier, F.; Möller, F.; Sattler, B.; Nold, J.; Liem, A.; Hupel, C.; Kuhn, S.; Hein, S.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2018Modelling the refractive index behavior of Al,P-doped SiO2, fabricated by means of all-solution doping, in the vicinity of Al:P = 1:1
Kuhn, S.; Hein, S.; Hupel, C.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2018MOPA-Lasersystem mit Rückreflexschutz
Haarlammert, Nicoletta; Schreiber, Thomas
Patent
2018Optisches Fasersystem mit Modenfeldanpassung
Haarlammert, Nicoletta; Ihring, Janka; Kuhn, Stefan
Patent
2017All-solution doping technique for high power fiber lasers - refractive index influence in the vicinity of Al:P = 1:1
Kuhn, S.; Hein, S.; Hupel, C.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2017Detailed investigations on thermal mode instabilities in LMA Yb-doped fibers
Beier, F.; Sattler, B.; Liem, A.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2017kW-class fiber laser prepared using an alternative solution doping MCVD-technique
Kuhn, S.; Hupel, C.; Hein, S.; Beier, F.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2017Measuring thermal load in fiber amplifiers in the presence of transversal mode instabilities
Beier, F.; Plötner, M.; Sattler, B.; Stutzki, F.; Walbaum, T.; Liem, A.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2017Modal content measurements (S2) of negative curvature hollow-core photonic crystal fibers
Bock, V.; Plötner, M.; Vries, O. de; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2017Single mode 4.3 kW output power from a diode-pumped Yb-doped fiber amplifier
Beier, F.; Hupel, C.; Kuhn, S.; Hein, S.; Nold, J.; Proske, F.; Sattler, B.; Liem, A.; Jauregui, C.; Limpert, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2017Single mode low-NA step index Yb-doped fiber design for output powers beyond 4kW
Beier, F.; Proske, F.; Hupel, C.; Kuhn, S.; Hein, S.; Sattler, B.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2017TMI investigations of very low NA Yb-doped fibers and scaling to extreme stable 4.4 kW single-mode output
Beier, F.; Möller, F.; Nold, J.; Sattler, B.; Kuhn, S.; Hupel, C.; Hein, S.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2016Modal content analysis of hollow core Kagome fibers
Plötner, M.; Vries, O. de; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2016Narrow linewidth, single mode 3 kW average power from a directly diode pumped ytterbium-doped low NA fiber amplifier
Beier, F.; Hupel, C.; Nold, J.; Kuhn, S.; Hein, S.; Ihring, J.; Sattler, B.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Journal Article
2016Temperature measurements in an ytterbium fiber amplifier up to the mode instability threshold
Beier, F.; Heinzig, M.; Sattler, B.; Walbaum, T.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
20156.8 kW peak power quasi-continuous wave tandem-pumped Ytterbium amplifier at 1071nm
Beier, Franz; Strecker, M.; Nold, Johannes; Haarlammert, Nicoletta; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas
Conference Paper
2015All-solution doping technique for tailoring core composition toward Yb:AlPO4:SiO2
Kuhn, S.; Hein, S.; Hupel, C.; Ihring, J.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2015Determination of thermal load from core temperature measurements in single mode ytterbium-doped fiber amplifiers
Beier, F.; Heinzig, M.; Walbaum, T.; Kuhn, S.; Hupel, C.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2015High power brightness converter realized by a multi-wavelengths pumped Yb-doped fiber amplifier
Haarlammert, N.; Liem, A.; Matzdorf, C.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.; Koch, R.; Fritsche, H.; Kruschke, B.; Grohe, A.; Gries, W.
Conference Paper
2015In situ temperature measurement in high power fiber amplifiers
Beier, F.; Heinzig, M.; Haarlammert, N.; Nold, J.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2015Investigations of mode instabilities in low-NA reduced mode overlap photonic crystal fibers
Haarlammert, N.; Sattler, B.; Liem, A.; Strecker, M.; Nold, J.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.; Ludewigt, K.; Jung, M.
Conference Paper
2015MCVD based fabrication of low-NA fibers for high power fiber laser application
Hupel, C.; Kuhn, S.; Hein, S.; Haarlammert, N.; Nold, J.; Beier, F.; Sattler, B.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2015Optimized Yb-doped fibers and joining technology for efficient end pumped monolithic high power fiber oscillators
Liem, A.; Haarlammert, N.; Matzdorf, C.; Nold, J.; Kuhn, S.; Kido, L.; Reichel, V.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.
Conference Paper
2015Optimizing mode instability in low-NA fibers by passive strategies
Haarlammert, Nicoletta; Sattler, Bettina; Liem, Andreas; Strecker, Maximilian; Nold, Johannes; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas; Ludewigt, Klaus; Jung, Markus
Journal Article
2014146W continuous wave ytterbium doped fiber amplifier at 1009 nm
Beier, Franz; Otto, Hans-Jürgen; Sattler, Bettina; Plötner, Marco; Haarlammert, Nicoletta; Vries, Oliver de; Jauregui, Cesar; Schreiber, Thomas; Limpert, Jens; Eberhardt, Ramona; Tünnermann, Andreas
Conference Paper
2013Fabrication of a high power Faraday isolator by direct bonding
Rothhardt, Carolin; Rekas, Miroslaw; Kalkowski, Gerhard; Haarlammert, Nicoletta; Eberhardt, Ramona; Tünnermann, Andreas
Conference Paper
2013Polarization dependent nonlinear limitations in continuous-wave high power fiber amplifiers
Haarlammert, Nicoletta; Rekas, Miroslaw; Vries, Oliver de; Kliner, Andrea; Liem, Andreas; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas
Conference Paper
2012Build up and decay of mode instability in a high power fiber amplifier
Haarlammert, Nicoletta; Vries, Oliver de; Liem, Andreas; Kliner, Andrea; Peschel, Thomas; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas
Journal Article
2012Effects of optical feedback on femtosecond supercontinuum generation
Groß, P.; Haarlammert, N.; Kues, M.; Walbaum, T.; Fallnich, C.
Journal Article
2012Limitations of narrow-bandwidth amplification at different seed wavelengths in Ytterbium-doped fibers
Rekas, Miroslaw; Haarlammert, Nicoletta; Kliner, Andrea; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas
Conference Paper
2012Spectral beam combining of high power fiber lasers
Schreiber, T.; Haarlammert, N.; Eberhardt, R.; Tünnermann, A.
Conference Paper