A
Andreas Tünnermann
Researcher at Fraunhofer Society
Publications - 1757
Citations - 48543
Andreas Tünnermann is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 97, co-authored 1738 publications receiving 43757 citations. Previous affiliations of Andreas Tünnermann include Schiller International University & University of Jena.
Papers
More filters
Proceedings ArticleDOI
Analysis of the hole shape evolution in fs-pulse percussion drilling with bursts
TL;DR: In this paper, the authors analyzed the behavior of laser percussion drilling with 1030 nm bursts consisting of 200 fs pulses separated by a time delay between 1 ps and 4 ns, and compared the results with drilling without bursts for different pulse energies.
Proceedings ArticleDOI
Gain Limitations and Consequences for Short Length Fiber Amplifiers
Fabian Röser,Damian N. Schimpf,Jan Rothhardt,Tino Eidam,Jens Limpert,Andreas Tünnermann,F. Salin +6 more
TL;DR: In this article, the authors numerically and experimentally analyze gain limitations due to pump light bleaching in large core short length fiber amplifiers and discuss consequences such as the efficiency and accumulated nonlinear phase.
Proceedings ArticleDOI
16 Channel Coherently-Combined Ultrafast Fiber Laser
Michael Mueller,Arno Klenke,Henning Stark,Joachim Buldt,Thomas Gottschall,Jens Limpert,Andreas Tünnermann +6 more
TL;DR: In this paper, a 16 channel coherently-combined ultrafast fiber was presented, which achieved 1.83 kW average power, 2.3 mJ pulse energy and 234 fs pulse duration at a combining efficiency of 82%.
Journal ArticleDOI
Extraction of enhanced, ultrashort laser pulses from a passive 10-MHz stack-and-dump cavity.
Sven Breitkopf,Stefano Wunderlich,Tino Eidam,Evgeny Shestaev,Evgeny Shestaev,Simon Holzberger,Simon Holzberger,Thomas Gottschall,Henning Carstens,Henning Carstens,Andreas Tünnermann,Andreas Tünnermann,Andreas Tünnermann,Ioachim Pupeza,Jens Limpert +14 more
TL;DR: Periodic dumping of ultrashort laser pulses from a passive multi-MHz repetition-rate enhancement cavity with a ten times longer cavity is demonstrated, representing an improvement in three orders of magnitude over previously extracted pulse energies.
Journal ArticleDOI
Wavelength-tunable, sub-picosecond pulses from a passively Q-switched microchip laser system.
TL;DR: A novel concept to generate sub-picosecond pulses from a passively Q-switched Nd:YVO4 microchip laser system with an adjustable wavelength shift up to a few tens of nanometers around the original emission wavelength of 1064 nm is presented.