OPCPA investigation with control over the temporal shape of 1.2 ps pump pulses

Mackonis, Paulius; Rodin, Aleksej M.

doi:10.1364/oe.383754

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…To this end, a compact, wavelength-tunable between 700 and 900 nm OPCPA fully based on 1-ps Yb:YAG Innoslab amplifier was designed to provide sub-30 fs pulses with 11.4 W average power at a 3.25 MHz repetition rate 115 (not shown in Fig. 5 to keep convenient aspect ratio of the plot) and several conceptually similar OPCPA setups operating at low (1 kHz) repetition rates were demonstrated as well 116,117 .…”

Section: Fig 4 | Graphical Summary Of the Performance Of Multi-millij...mentioning

confidence: 99%

Table-top optical parametric chirped pulse amplifiers: past and present

Dubietis¹,

Matijošius²

2023

OEA

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The generation of power-and wavelength-scalable few optical cycle pulses remains one of the major challenges in modern laser physics. Over the past decade, the development of table-top optical parametric chirped pulse amplificationbased systems was progressing at amazing speed, demonstrating excellent performance characteristics in terms of pulse duration, energy, peak power and repetition rate, which place them at the front line of modern ultrafast laser technology. At present, table-top optical parametric chirped pulse amplifiers comprise a unique class of ultrafast light sources, which currently amplify octave-spanning spectra and produce carrier-envelope phase-stable, few optical cycle pulses with multi-gigawatt to multi-terawatt peak powers and multi-watt average powers, with carrier wavelengths spanning a considerable range of the optical spectrum. This article gives an overview on the state of the art of table-top optical parametric chirped pulse amplifiers, addressing their relevant scientific and technological aspects, and provides a short outlook of practical applications in the growing field of ultrafast science.

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Section: Fig 4 | Graphical Summary Of the Performance Of Multi-millij...mentioning

confidence: 99%

Table-top optical parametric chirped pulse amplifiers: past and present

Dubietis¹,

Matijošius²

2023

OEA

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“…For these reasons SC generation emerges as the only reliable seed source for ultrafast optical parametric amplifiers (OPAs) [3][4][5], offering high energy stability, excellent pulse compressibility along with preservation of stable carrier envelope phase, and low time jitter between the pump and seed pulses [6]. SC generation is also widely exploited in table-top optical parametric chirped pulse amplifiers, either serving as a suitable seed directly, see e.g., [7][8][9][10][11][12] or being employed in the intermediate stages of more complex broadband seed production setups, see [13] for a review.…”

Section: Introductionmentioning

confidence: 99%

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

Marciulionyte,

Reggui,

Tamosauskas

et al. 2023

Preprint

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We present an experimental investigation of supercontinuum generation in potassium gadolinium tungstate (KGW) and yttrium vanadate (YVO) crystals pumped with 210 fs, 1030 nm pulses from an amplified Yb:KGW laser operating at 2 MHz repetition rate. We demonstrate that compared to commonly used sapphire and YAG, these materials possess considerably lower supercontinuum generation thresholds, produce remarkable red-shifted spectral broadenings (up to 1700 nm in YVO and up to 1900 nm in KGW) and exhibit less bulk heating due to energy deposition during filamentation process. Moreover, durable damage-free performance was observed without any translation of the sample, suggesting that KGW and YVO are excellent nonlinear materials for high repetition rate supercontinuum generation in the near and short-wave infrared spectral range.

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“…The highest experimentally-observed SHG efficiencies for picosecond high-repetition-rate lasers in the multi-hundred-Watt average power range are limited to 70% [20,21] and have been achieved with a single-stage SHG in Lithium Triborate (LBO) or beta-Barium Borate (BBO). A very promising approach for improving the SHG efficiency is cascaded SHG [22] which has been demonstrated with efficiencies in the range of 60-70% at 1-kHz repetition rate [18,22], and very recently with 85% for a 0.1-kHz system [23]. The first stage in cascaded SHG is used to deplete the most intense parts of the fundamental pulses, resulting in a spatiotemporally flattened fundamental at the output.…”

Section: Introductionmentioning

confidence: 99%

“…These flattened fundamental pulses are then re-used to drive a second SHG stage. Such a flattened pump pulse profile can increase the efficiency of high-power OPA stages, as it lifts the saturation limit to higher pulse energies and reduces the detrimental effects of spectral gain narrowing which is a major concern for efficient few-cycle OPCPA systems [23,24].…”

Section: Introductionmentioning

confidence: 99%

High-power few-cycle near-infrared OPCPA for soft X-ray generation at 100 kHz

et al. 2020

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We present a near-infrared optical parametric chirped-pulse amplifier (OPCPA) and soft X-ray (SXR) highharmonic generation system. The OPCPA produces few-cycle pulses at a center wavelength of 800 nm and operates at a high repetition rate of 100 kHz. It is seeded by fully programmable amplitude and phase controlled ultra-broadband pulses from a Ti:sapphire oscillator. The output from the OPCPA system was compressed to near-transform-limited 9.3-fs pulses. High-power operation up to an average power of 35 W was achieved, and a fully characterized pulse compression was recorded for a power level of 22.5 W, demonstrating pulses with a peak power greater than 21 GW. We demonstrate that at such high repetition rates, spatiotemporally flattened pump pulses can be achieved through a cascaded second-harmonic generation approach with an efficiency of more than 70%, providing a compelling OPCPA architecture for power-scaling ultra-broadband systems in the near-infrared. The output of this 800-nm OPCPA system was used to generate SXR radiation reaching 190 eV photon energy through high-harmonic generation in helium.

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OPCPA investigation with control over the temporal shape of 1.2 ps pump pulses

Cited by 8 publications

References 28 publications

Table-top optical parametric chirped pulse amplifiers: past and present

Table-top optical parametric chirped pulse amplifiers: past and present

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

High-power few-cycle near-infrared OPCPA for soft X-ray generation at 100 kHz

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