Ultrafast thin-disk laser with 80  μJ pulse energy and 242  W of average power

Saraceno, Clara J.; Emaury, Florian; Schriber, Cinia; Hoffmann, Martin; Golling, Matthias; Südmeyer, Thomas; Keller, U.

doi:10.1364/ol.39.000009

Cited by 172 publications

(125 citation statements)

References 27 publications

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“…The achievement of efficient HHG with low-energy and high repetition rate laser systems has profound implications for a diverse field of HHG applications, e.g., in (multi)-dimensional surface science 48 , coincidence detection 7 , or coherent diffractive imaging 6,49 . Moreover, this experimental demonstration paves the way for making HHG sources more compact, cost-effective, reliable, and accessible to non-laser experts (e.g., by replacing our front-end (CC-FCPA) with a compact turn-key fiber laser system 33,34 or a thin-disk oscillator 35,36 ). Future work will aim to combine stateof-the-art kilowatt class femtosecond lasers 15 with the presented compression scheme to achieve milliwatt-level harmonics.…”

Section: Resultsmentioning

confidence: 96%

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Exploring new avenues in high repetition rate table-top coherent extreme ultraviolet sources

et al. 2015

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The process of high harmonic generation (HHG) enables the development of table-top sources of coherent extreme ultraviolet (XUV) light. Although these are now matured sources, they still mostly rely on bulk laser technology that limits the attainable repetition rate to the low kilohertz regime. Moreover, many of the emerging applications of such light sources (e.g., photoelectron spectroscopy and microscopy, coherent diffractive imaging, or frequency metrology in the XUV spectral region) require an increase in the repetition rate. Ideally, these sources are operated with a multi-MHz repetition rate and deliver a high photon flux simultaneously. So far, this regime has been solely addressed using passive enhancement cavities together with low energy and high repetition rate lasers. Here, a novel route with significantly reduced complexity (omitting the requirement of an external actively stabilized resonator) is demonstrated that achieves the previously mentioned demanding parameters. A krypton-filled Kagome photonic crystal fiber is used for efficient nonlinear compression of 9 mJ, 250 fs pulses leading to ,7 mJ, 31 fs pulses at 10.7 MHz repetition rate. The compressed pulses are used for HHG in a gas jet. Particular attention is devoted to achieving phase-matched (transiently) generation yielding .10 13 photons s -1 (.50 mW) at 27.7 eV. This new spatially coherent XUV source improved the photon flux by four orders of magnitude for direct multi-MHZ experiments, thus demonstrating the considerable potential of this source.

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Section: Resultsmentioning

confidence: 96%

“…Therefore, this system, which was used due to its availability, can be easily replaced by compact, turn-key fiber laser systems 33,34 or with stateof-the-art thin-disk oscillators 35,36 . The nonlinear compression stage is necessary to achieve the required ultrashort pulse durations for efficient HHG 1,9 .…”

Section: Methodsmentioning

confidence: 99%

Exploring new avenues in high repetition rate table-top coherent extreme ultraviolet sources

et al. 2015

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“…The TDL geometry has currently demonstrated the highest average power and pulse energy emitted from any oscillator [36,78]. New breakthroughs in this domain are expected in the near future for the generation of stabilized frequency combs in the high average power regime of >100 W, which will be of paramount importance for high field physics such as high harmonic generation to produce extreme ultra-violet frequency combs.…”

Section: Discussionmentioning

confidence: 99%

“…SESAM-modelocked TDLs enable direct power scaling by increasing the beam size on the thin disk gain medium and on the SESAM, without detrimental increase of the nonlinearities. As a result, TDLs are able to reach high power operation and Yb:YAG SESAM-modelocked lasers have demonstrated the highest average power (275 W in 583 fs pulses) and pulse energy (80 μJ in 1.1 ps pulses) of any type of modelocked oscillators [36,78]. Therefore, TDLs are well-suited as driving sources for experiments requiring high intensities at megahertz repetition rates, e.g., to generate vacuum ultra-violet (VUV) or extreme ultra-violet (XUV) radiation by high harmonic generation (HHG).…”

Section: Self-referenced Dpssls In Thin Disk Geometrymentioning

confidence: 99%

Carrier-Envelope Offset Stabilized Ultrafast Diode-Pumped Solid-State Lasers

Schilt

Südmeyer

2015

Applied Sciences

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Optical frequency combs have been revolutionizing many research areas and are finding a growing number of real-world applications. While initially dominated by Ti:Sapphire and fiber lasers, optical frequency combs from modelocked diode-pumped solid-state lasers (DPSSLs) have become an attractive alternative with state-of-the-art performance. In this article, we review the main achievements in ultrafast DPSSLs for frequency combs. We present the current status of carrier-envelope offset (CEO) frequency-stabilized DPSSLs based on various approaches and operating in different wavelength regimes. Feedback to the pump current provides a reliable scheme for frequency comb CEO stabilization, but also other methods with faster feedback not limited by the lifetime of the gain material have been applied. Pumping DPSSLs with high power multi-transverse-mode diodes enabled a new class of high power oscillators and gigahertz repetition rate lasers, which were initially not believed to be suitable for CEO stabilization due to the pump noise. However, this challenge has been overcome, and recently both high power and gigahertz DPSSL combs have been demonstrated. Thin disk lasers have demonstrated the highest pulse energy and average power emitted from any ultrafast oscillator and present a high potential for the future generation of stabilized frequency combs with hundreds of watts average output power.

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“…The most typical gain material for TDLs is Yb-doped YAG. SESAM modelocked Yb:YAG thin-disk oscillators currently hold both the average output-power record of 275 W [6] and the pulse energy record of 80 µJ [7] [ Fig. 1(a)].…”

Section: Introductionmentioning

confidence: 99%

Dual-gain SESAM modelocked thin disk laser based on Yb:Lu_2O_3 and Yb:Sc_2O_3

et al. 2014

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Abstract:We present for the first time a SESAM-modelocked thin-disk laser (TDL) that incorporates two gain materials with different emission spectra in a single TDL resonator. The two gain media used in this experiment are the sesquioxide materials Yb:Lu 2 O 3 and Yb:Sc 2 O 3 , which have their spectral emission peak displaced by ≈7 nm. We can benefit from a combined gain bandwidth that is wider than the one provided by a single gain material alone and still conserve the excellent thermal properties of each disk. In these first proof-of-principle experiments we demonstrate pulse durations shorter than previously achieved with the single gain material Yb:Lu 2 O 3 . The oscillator generates pulses as short as 103 fs at a repetition rate of 41.7 MHz and a center wavelength of around 1038 nm, with an average output power of 1.4 W. A different cavity layout provides pulses with a duration of 124 fs at an output power of 8.6 W. This dual-gain approach should allow for further power scaling of TDLs and these first results prove this method to be a promising new way to combine the record output-power performance of modelocked TDLs with short pulse durations in the sub-100 fs regime. Matuschek, and J. Aus der Au, "Semiconductor saturable absorber mirrors (SESAMs) for femtosecond to nanosecond pulse generation in solid-state lasers," IEEE J. Sel. Top. Quantum Electron. 2(3), 435-453 (1996). 2. A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, and H. Opower, "Scalable concept for diode-pumped highpower solid-state lasers," Appl. Phys. B 58(5), 365-372 (1994). Published in Optics Express, 22, issue 16, 18979-18986, 2014 which should be used for any reference to this work 1 Stolow, U. Thumm, and M. J. J. Vrakking, "What will it take to observe processes in 'real time'?" Nat. Photonics 8(3), 162-166 (2014

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Ultrafast thin-disk laser with 80 μJ pulse energy and 242 W of average power

Cited by 172 publications

References 27 publications

Exploring new avenues in high repetition rate table-top coherent extreme ultraviolet sources

Exploring new avenues in high repetition rate table-top coherent extreme ultraviolet sources

Carrier-Envelope Offset Stabilized Ultrafast Diode-Pumped Solid-State Lasers

Dual-gain SESAM modelocked thin disk laser based on Yb:Lu_2O_3 and Yb:Sc_2O_3

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