12  mJ kW-class ultrafast fiber laser system using multidimensional coherent pulse addition

Kienel, Marco; Müller, Michael; Klenke, Arno; Limpert, Jens; Tünnermann, Andreas

doi:10.1364/ol.41.003343

Cited by 86 publications

(50 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concept of coherent combination of multiple lasers or amplifiers allows for further average power and pulse energy scaling simply by increasing the number of amplifiers . These modern femtosecond lasers have come of age and are described in a greater detail in the following articles . However, due to the limited gain bandwidth of Yb, the pulse duration of these systems are typically limited to ∼ 1 ps for Yb:YAG down to ∼ 100 fs for Yb:glass lasers.…”

Section: Introductionmentioning

confidence: 99%

High Average Power Near‐Infrared Few‐Cycle Lasers

Rothhardt

Hädrich

Delagnes

et al. 2017

Laser & Photonics Reviews

View full text Add to dashboard Cite

Ultra-short laser pulses with only a few optical cycles duration have gained increasing importance during the recent decade and are currently employed in many laboratories worldwide. In addition, modern laser technology nowadays can provide few-cycle pulses at very high average power which advances established studies and opens exciting novel research opportunities. In this paper, the two complementary approaches for providing few-cycle pulses at high average power, namely optical parametric amplification and nonlinear pulse compression, are reviewed and compared. In addition, their limitations and future scaling potential are discussed. Furthermore, selected applications particularly taking advantage of the high average power and high repetition rate are presented.

show abstract

Section: Introductionmentioning

confidence: 99%

High Average Power Near‐Infrared Few‐Cycle Lasers

Rothhardt

Hädrich

Delagnes

et al. 2017

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…In the next experimental step, the AR-coated AOM will be exchanged for a Brewster-cut AOM and a stateof-the-art seed system [33] will be used to deliver up to 1 mJ at 2-MHz repetition rate with a spectrum enabling pulse durations below 300 fs. Our simulations under consideration of SPM-related effects in the AOM show that at the corresponding cavity length of 150 m an extracted enhancement of around 50 should be feasible by stacking 100 pulses.…”

Section: Discussionmentioning

confidence: 99%

Extraction of enhanced, ultrashort laser pulses from a passive 10-MHz stack-and-dump cavity

et al. 2016

Self Cite

View full text Add to dashboard Cite

Periodic dumping of ultrashort laser pulses from a passive multi-MHz repetition-rate enhancement cavity is a promising route towards multi-kHz repetition-rate pulses with Joule-level energies at an unparalleled average power. Here, we demonstrate this so-called stack-and-dump scheme with a 30-m-long cavity. Using an acousto-optic modulator, we extract pulses of 0.16 mJ at 30-kHz repetition rate, corresponding to 65 stacked input pulses, representing an improvement in three orders of magnitude over previously extracted pulse energies. The ten times longer cavity affords three essential benefits over former approaches. First, the time between subsequent pulses is increased to 100 ns, relaxing the requirements on the switch. Second, it allows for the stacking of strongly stretched pulses (here from 800 fs to 1.5 ns), thus mitigating nonlinear effects in the cavity optics. Third, the choice of a long cavity offers increased design flexibility with regard to thermal robustness, which will be crucial for future power scaling. The herein presented results constitute a necessary step towards stack-and-dump systems providing access to unprecedented laser parameter regimes

show abstract

“…Fiber laser systems show promising high efficiency, excellent beam quality, and stability [4] , but are limited by pulse energy. Coherent pulse stacking (CPS) is capable of conveniently adding large numbers of pulses, enabling the extraction of all available stored energy from a fiber amplifier while maintaining low intensity to minimize nonlinear effects [5][6][7][8] . Integrating CPS with spatial and spectral combining has the potential to provide joule level pulse energy at a kilohertz (kHz) repetition rate to bridge the technical gap [9][10][11] .…”

mentioning

confidence: 99%

Extracting cavity and pulse phases from limited data for coherent pulse stacking

Yan¹,

Wilcox²,

Byrd³

et al. 2018

Chin. Opt. Lett.

View full text Add to dashboard Cite

Coherent pulse stacking (CPS) is a new time-domain coherent addition technique that stacks several optical pulses into a single output pulse, enabling high pulse energy and high average power. A Z-domain model targeting the pulsed laser is assembled to describe the optical interference process. An algorithm, extracting the cavity phase and pulse phases from limited data, where only the pulse intensity is available, is developed to diagnose optical cavity resonators. We also implement the algorithm on the cascaded system of multiple optical cavities, achieving phase errors less than 1.0°(root mean square), which could ensure the stability of CPS.

show abstract

12 mJ kW-class ultrafast fiber laser system using multidimensional coherent pulse addition

Cited by 86 publications

References 21 publications

High Average Power Near‐Infrared Few‐Cycle Lasers

High Average Power Near‐Infrared Few‐Cycle Lasers

Extraction of enhanced, ultrashort laser pulses from a passive 10-MHz stack-and-dump cavity

Extracting cavity and pulse phases from limited data for coherent pulse stacking

Contact Info

Product

Resources

About