Journal ArticleDOI
88 W 0.5 mJ femtosecond laser pulses from two coherently combined fiber amplifiers.
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TLDR
The experiment proves that coherent addition of femtosecond fiber lasers can be efficiently and reliably performed at high B-integral and considerable thermal load in the individual amplifiers.Abstract:
The generation of 0.5 mJ femtosecond laser pulses by coherent combining of two high power high energy fiber chirped-pulse amplifiers is reported. The system is running at a repetition frequency of 175 kHz producing 88 W of average power after the compressor unit. Polarizing beam splitters have been used to realize an amplifying Mach–Zehnder interferometer, which has been stabilized with a Hansch–Couillaud measurement system. The stabilized system possesses a measured residual rms phase difference fluctuation between the two branches as low as λ/70 rad at the maximum power level. The experiment proves that coherent addition of femtosecond fiber lasers can be efficiently and reliably performed at high B-integral and considerable thermal load in the individual amplifiers.read more
Citations
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Journal ArticleDOI
530 W, 1.3 mJ, four-channel coherently combined femtosecond fiber chirped-pulse amplification system
Arno Klenke,Sven Breitkopf,Marco Kienel,Thomas Gottschall,Tino Eidam,Steffen Hädrich,Jan Rothhardt,Jens Limpert,Andreas Tünnermann +8 more
TL;DR: A femtosecond fiber laser system comprising four coherently combined large-pitch fibers as the main amplifier and an excellent beam quality and efficiency have been obtained.
Journal ArticleDOI
Coherently-combined two channel femtosecond fiber CPA system producing 3 mJ pulse energy
Arno Klenke,Enrico Seise,Stefan Demmler,Jan Rothhardt,Sven Breitkopf,Jens Limpert,Andreas Tünnermann +6 more
TL;DR: A fiber CPA system consisting of two coherently combined fiber amplifiers, which have been arranged in an actively stabilized Mach-Zehnder interferometer, and achieved at an average power of 30 W is presented.
Journal ArticleDOI
Coherent beam combining of high power fiber lasers: Progress and prospect
TL;DR: The recent research progress of coherent beam combining of high-power fiber lasers is reviewed in this article, where key technologies like coherently combinable fiber laser, phase control of multiple beams and beam tilling are specially analyzed.
Journal ArticleDOI
A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities
Sven Breitkopf,Tino Eidam,Tino Eidam,Arno Klenke,Arno Klenke,Lorenz von Grafenstein,Henning Carstens,Simon Holzberger,Ernst E. Fill,Thomas Schreiber,Ferenc Krausz,Andreas Tünnermann,Andreas Tünnermann,Andreas Tünnermann,Ioachim Pupeza,Jens Limpert,Jens Limpert,Jens Limpert +17 more
TL;DR: In this article, the authors proposed a temporal coherent combination (pulse stacking) of a pulse train emitted from a high-repetition-rate femtosecond laser system in a passive enhancement cavity.
Journal ArticleDOI
Performance Scaling of Ultrafast Laser Systems by Coherent Addition of Femtosecond Pulses
Jens Limpert,Arno Klenke,Marco Kienel,Sven Breitkopf,Tino Eidam,Steffen Hädrich,Cesar Jauregui,Andreas Tünnermann +7 more
TL;DR: An overview of the most important experimental implementations of spatially and/or temporally separated amplification and subsequent coherent addition of ultrashort pulses and discusses the ability of these approaches to generate laser parameters that, only a few years ago, seemed impossible to achieve.
References
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Journal ArticleDOI
Compact diode-pumped 1.1 kW Yb:YAG Innoslab femtosecond amplifier
TL;DR: A compact diode-pumped Yb:KGW femtosecond oscillator-Yb:YAG Innoslab amplifier master oscillator power amplifier (MOPA) with nearly transform-limited 636 fs pulses at 620 W average output power, 20 MHz repetition rate, and beam quality of 1.43 and 1.35 is demonstrated.
Journal ArticleDOI
Fiber chirped-pulse amplification system emitting 3.8 GW peak power.
Tino Eidam,Jan Rothhardt,Fabian Stutzki,Florian Jansen,Steffen Hädrich,Henning Carstens,Cesar Jauregui,Jens Limpert,Andreas Tünnermann +8 more
TL;DR: A fiber chirped- pulse amplification system capable of generating nearly transform-limited sub 500 fs pulses with 2.2 mJ pulse energy at 11 W average power and a record peak power of 3.8 GW could be achieved by combining active phase shaping with an efficient reduction of the acquired nonlinear phase.
Femtosecond thin-disk laser with 141 W of average power. Opt. Lett. 35, 2302-2304
Cyrill R. E. Baer,Christian Kränkel,Clara J. Saraceno,Oliver H. Heckl,Matthias Golling,Rigo Peters,Klaus Petermann,Thomas Südmeyer,Günter Huber,Ursula Keller +9 more
TL;DR: A semiconductor saturable absorber mirror mode-locked thin disk laser based on Yb:Lu(2)O(3) with an average power of 141 W and an optical-to-optical efficiency of more than 40%.
Journal ArticleDOI
Femtosecond thin-disk laser with 141 W of average power
Cyrill R. E. Baer,Christian Kränkel,Clara J. Saraceno,Oliver H. Heckl,Matthias Golling,Rigo Peters,Klaus Petermann,Thomas Südmeyer,Günter Huber,Ursula Keller +9 more
TL;DR: In this article, a semiconductor saturable absorber mirror mode-locked thin disk laser based on Yb:Lu2O3 with an average power of 141W and an optical-to-optical efficiency of more than 40%.
Journal ArticleDOI
Coherent beam combining of two femtosecond fiber chirped-pulse amplifiers
Louis Daniault,Marc Hanna,Laurent Lombard,Yoann Zaouter,Eric Mottay,Didier Goular,Pierre Bourdon,Frédéric Druon,Patrick Georges +8 more
TL;DR: It is shown that coherent beam combining of two femtosecond fiber chirped-pulse amplifiers seeded by a common oscillator opens up a way to scale the peak/average power of ultrafast fiber sources.