Phase-stable, multi-µJ femtosecond pulses from a repetition-rate tunable Ti:Sa-oscillator-seeded Yb-fiber amplifier

Saule, Tobias; Holzberger, Simon; Vries, Oliver de; Plötner, Marco; Limpert, Jens; Tünnermann, Andreas; Pupeza, Ioachim

doi:10.1007/s00340-016-6611-9

Cited by 28 publications

(20 citation statements)

References 32 publications

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“…Figure a shows the CEP shift of both the input signal and the output of the OPA as obtained by means of an f‐to‐2f interferometer operated with 4 ms integration time over a period of 10 s. The resulting RMS standard deviation after the OPA is 19.3 mrad. The power spectral density of the CEP noise up to 125 Hz (Figure b) compares positively with other systems providing high pulse energy at high repetition rate . This value represents a marginal increase as compared to the seed (12.3 mrad) that is mainly attributed to nonlinear phase shifts in the f‐to‐2f interferometer itself as a result of minor fluctuations in amplitude.…”

Section: Intense Few‐cycle Pulses At High Repetition Ratesupporting

confidence: 55%

“…The power spectral density of the CEP noise up to 125 Hz (Figure 3b) compares positively with other systems providing high pulse energy at high repetition rate. [27][28][29][30] This value represents a marginal increase as compared to the seed (12.3 mrad) that is mainly attributed to nonlinear phase shifts in the f-to-2f interferometer itself as a result of minor fluctuations in amplitude. An extended characterization of the passive phase locking scheme of the driving laser suggests that the CEP noise integrated from the Nyquist-frequency (half the OPA output repetition rate, i.e.…”

Section: Intense Few-cycle Pulses At High Repetition Ratementioning

confidence: 88%

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Parametric Amplification of Phase‐Locked Few‐Cycle Pulses and Ultraviolet Harmonics Generation in Solids at High Repetition Rate

Storz

Tauch

Wunram

et al. 2017

Laser & Photonics Reviews

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A high‐power femtosecond Yb:fiber system is seeded by a phase‐locked Er:fiber source and drives an ultra‐broadband optical parametric amplifier that operates at 10 MHz repetition rate. The resulting pulses display precise control of the carrier‐envelope phase. Their 8.3 fs temporal duration corresponds to 2.3 optical cycles of the 1100 nm carrier wavelength. Focusing 200 nJ of pulse energy into widegap materials generates optical harmonics up to fifth order. Even in a perturbative regime, strong effects of the carrier‐envelope phase on the emitted spectra are observed.

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Section: Intense Few‐cycle Pulses At High Repetition Ratesupporting

confidence: 55%

Section: Intense Few-cycle Pulses At High Repetition Ratementioning

confidence: 88%

Parametric Amplification of Phase‐Locked Few‐Cycle Pulses and Ultraviolet Harmonics Generation in Solids at High Repetition Rate

Storz

Tauch

Wunram

et al. 2017

Laser & Photonics Reviews

View full text Add to dashboard Cite

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“…For waveform-stable IAPs, first of all it is a requirement that the enhanced comb has an offset frequency of zero. This can be accomplished by phase-stabilizing the seeding comb [22,28,29] and using tailored cavity mirrors [30]. Then, the XUV emission must be confined to only one attosecond burst per pulse.…”

Section: State Of the Art Of Hhg In Femtosecond Ecsmentioning

confidence: 99%

“…Therefore, the predicted photon flux should be regarded as a rather strong underestimation of the flux attainable with implementing this scheme at a repetition rate at which each gas atom is hit by a single pulse only. With state-of-the-art lasers operating at the highest repetition rates in this regime [29] and a pulse-energy-scalable compression scheme (e.g. [67]), the seed pulse energy can be increased accordingly.…”

Section: Photon Flux Estimation For Tmgmentioning

confidence: 99%

Generation of isolated attosecond pulses with enhancement cavities—a theoretical study

2017

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The generation of extreme-ultraviolet (XUV) isolated attosecond pulses (IAPs) has enabled experimental access to the fastest phenomena in nature observed so far, namely the dynamics of electrons in atoms, molecules and solids. However, nowadays the highest repetition rates at which IAPs can be generated lies in the kHz range. This represents a rather severe restriction for numerous experiments involving the detection of charged particles, where the desired number of generated particles per shot is limited by space charge effects to ideally one. Here, we present a theoretical study on the possibility of efficiently producing IAPs at multi- MHz repetition rates via cavity-enhanced high-harmonic generation (HHG). To this end, we assume parameters of state-of-the-art Yb-based femtosecond laser technology to evaluate several time-gating methods which could generate IAPs in enhancement cavities. We identify polarization gating and a new method, employing non-collinear optical gating in a tailored transverse cavity mode, as suitable candidates and analyze these via extensive numerical modeling. The latter, which we dub transverse mode gating (TMG) promises the highest efficiency and robustness. Assuming 0.7 μ J , 5-cycle pulses from the seeding laser and a state-of-the-art enhancement cavity, we show that TMG bares the potential to generate IAPs with photon energies around 100 eV and a photon flux of at least 10 8 photons s − 1 at repetition rates of 10 MHz and higher. This result reveals a roadmap towards a dramatic decrease in measurement time (and, equivalently, an increase in the signal-to-noise ratio) in photoelectron spectroscopy and microscopy. In particular, it paves the way to combining attosecond streaking with photoelectron emission microscopy, affording, for the first time, the spatially and temporally resolved observation of plasmonic fields in nanostructures. Furthermore, it promises the generation of frequency combs with an unprecedented bandwidth for XUV precision spectroscopy.

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“…For the case of the high average power compression experiments outlined above, a CEP stable fiber chirped pulse amplification system is required. Current research efforts showed that this requires synchronized radio‐frequency drivers for the employed acousto‐optical pulse pickers resulting in the recent demonstration and stabilization of a 80W, μJ‐level fiber CPA system with subsequent nonlinear compression to 30fs and less than 100 mrad CEP noise . These results should pave the way for achieving >100W, sub‐2 cycle pulses with stabilized CEP and high energy.…”

Section: Nonlinear Pulse Compression To Few‐cycle Durationsmentioning

confidence: 99%

High Average Power Near‐Infrared Few‐Cycle Lasers

Rothhardt

Hädrich

Delagnes

et al. 2017

Laser & Photonics Reviews

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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.

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Phase-stable, multi-µJ femtosecond pulses from a repetition-rate tunable Ti:Sa-oscillator-seeded Yb-fiber amplifier

Cited by 28 publications

References 32 publications

Parametric Amplification of Phase‐Locked Few‐Cycle Pulses and Ultraviolet Harmonics Generation in Solids at High Repetition Rate

Parametric Amplification of Phase‐Locked Few‐Cycle Pulses and Ultraviolet Harmonics Generation in Solids at High Repetition Rate

Generation of isolated attosecond pulses with enhancement cavities—a theoretical study

High Average Power Near‐Infrared Few‐Cycle Lasers

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