500 kHz OPCPA delivering tunable sub-20 fs pulses with 15 W average power based on an all-ytterbium laser

Puppin, Michele; Deng, Yunpei; Prochnow, Oliver; Ahrens, Jan; Binhammer, Thomas; Morgner, Uwe; Krenz, M.; Wolf, Martin; Ernstorfer, Ralph

doi:10.1364/oe.23.001491

Cited by 61 publications

(42 citation statements)

References 24 publications

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“…The same applies to solid-state applications, such as, for instance, the attosecond PhotoElectron Emission microscope, which promises the dynamical imaging of localized nanoscale structures, e.g., surface plasmons [36,37]. Also, femtosecond Angularly Resolved PhotoEmission Spectroscopy (FemtoArpes) [38][39][40][41] will benefit from these emerging sources with high photon fluxes but low photon number per pulse. Upon delivering the same order of magnitude of photons per pulse, the full Brillouin zone becomes accessible, while keeping a femtosecond to attosecond time resolution [42,43].…”

Section: Resultsmentioning

confidence: 98%

Spatio-spectral structures in high harmonic generation driven by tightly focused high repetition rate lasers

et al. 2018

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We investigate the spatio-spectral properties of extreme ultraviolet (XUV) high harmonic radiation driven by high repetition rate femtosecond laser systems. In the spatio-spectral domain, ring-shaped structures at each harmonic order associated with long-trajectory electrons are found to form arrow-shaped structures at the cutoff. These structures are observed with two different laser systems: an optical parametric chirped-pulse amplifier system at a central wavelength of 1.55 μm and 125 kHz repetition rate, and a temporally compressed femtosecond ytterbium fiber amplifier at 1.03 μm wavelength and 100 kHz repetition rate. As recently pointed out, the observed structures are well explained by considering the space-time atomic dipole-induced phase for short and long electron trajectories in the generation plane. The tighter focusing geometry and longer wavelength associated with these emerging driving laser systems increase the ring-like divergence and spectral broadening for high harmonics. Cutoff energies and photon fluxes obtained in argon and neon are also reported. Overall, these results shed new light on the properties of XUV radiation driven by these recently developed high average power laser systems, paving the way to high photon-flux XUV beamlines.

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Section: Resultsmentioning

confidence: 98%

Spatio-spectral structures in high harmonic generation driven by tightly focused high repetition rate lasers

et al. 2018

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“…Furthermore, it is noteworthy that in the conventional wavelength-insensitive PM, such kind of noncollinear angular dispersion will also be induced with a comparable amount to that in the NAPM. In this wavelength-insensitive PM, few-cycle pulses have been widely demonstrated without the need of compensating the nonlinear angular dispersion141516, which provides a further confidence for the feasibility of the proposed NAPM.…”

Section: Resultsmentioning

confidence: 78%

“…However, the PM is sensitive to both the wavelength and temperature in collinear PM, resulting in limited spectral and thermal acceptance. As a common practice, the noncollinear configuration provides the possibility of wavelength-insensitive PM, supporting the amplification of ultrashort pulses of ~20 fs or less13141516171819. Besides, another promising approach for generating high-power few-cycle pulses is parametric amplification in the frequency domain20.…”

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confidence: 99%

Temperature- and wavelength-insensitive parametric amplification enabled by noncollinear achromatic phase-matching

Tang

Wang

et al. 2016

Sci Rep

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Optical parametric chirped-pulse amplification (OPCPA) has been demonstrated to be a promising approach for pushing femtosecond pulses towards ultra-high peak powers. However, the future success of OPCPA strongly relies on the ability to manipulate its phase-matching (PM) configuration. When a high average power pump laser is involved, the thermal effects in nonlinear crystals induce phase-mismatch distortions that pose an inherent limitation on the conversion efficiency. Here, we demonstrate that the noncollinear configuration previously adopted for wavelength-insensitive PM can be employed for temperature-insensitive PM when the noncollinear angle is properly reset. Simultaneous temperature- and wavelength-insensitive PM is realized for the first time by imposing such a temperature-insensitive noncollinear configuration with an angularly dispersed seed signal. Based on the lithium triborate crystal, the proposed noncollinear achromatic PM has a thermal acceptance 6 times larger than that of the conventional wavelength-insensitive noncollinear PM and has a sufficient spectral acceptance to support pulse durations of ~20 fs at 800 nm. These achievements open new possibilities for generating ultra-high peak power lasers with high average power.

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“…Here, by employing a 2 mm thick BBO crystal, the amplified energy reached 2.5 mJ. In the last two OPCPA stages, an optical-to-optical conversion efficiency of >32% was achieved (Figure 3(b) and (c)), which to the best of our knowledge is the highest reported conversion efficiency for few-cycle OPCPA systems [9,10,29,30]. No measurable superfluorescence background was observed when blocking the signal beam in front of the first stage.…”

Section: Opcpa Stages and Pulse Compressionmentioning

confidence: 74%

Yb:YAG-Pumped, Few-Cycle Optical Parametric Amplifiers

Fattahi¹

2016

High Energy and Short Pulse Lasers

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In this chapter, the principle, design, and characteristics of high-efficiency, short-pulsepumped, few-cycle optical parametric chirped-pulse amplification (OPCPA) systems are reviewed. To this end, the feasibility of two techniques to increase the conversion efficiency of few-cycle OPCPA systems is demonstrated and discussed. The techniques result in 2.5 mJ, 7.5 W pulses and correspond to a pump-to-signal conversion efficiency of 30%. The broadband amplified spectrum supports 5.7 fs. Finally, the feasibility of extending the amplified spectrum to a near-single-cycle regime by using the combination of different crystals and phase matching is shown.

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500 kHz OPCPA delivering tunable sub-20 fs pulses with 15 W average power based on an all-ytterbium laser

Cited by 61 publications

References 24 publications

Spatio-spectral structures in high harmonic generation driven by tightly focused high repetition rate lasers

Spatio-spectral structures in high harmonic generation driven by tightly focused high repetition rate lasers

Temperature- and wavelength-insensitive parametric amplification enabled by noncollinear achromatic phase-matching

Yb:YAG-Pumped, Few-Cycle Optical Parametric Amplifiers

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