@article{MTMT:34836411,
	title = {Systematic comparison of commercial devices for temporal characterization of few-cycle laser pulses in the 500-1000 nm spectral range},
	url = {https://m2.mtmt.hu/api/publication/34836411},
	author = {Pajer, Viktor and Bohus, János and Malakzadeh Fard Khangheshlaghi, Abdollah and Lehotai, Levente and Kalashnikov, Mikhail and Seres, Imre and Gilicze, Barnabás and Kiss, Bálint and Börzsönyi, Ádám and Varjú, Katalin and Szabó, Gábor and Nagymihály, Roland Sándor},
	doi = {10.1364/OE.509583},
	journal-iso = {OPT EXPRESS},
	journal = {OPTICS EXPRESS},
	volume = {32},
	unique-id = {34836411},
	issn = {1094-4087},
	abstract = {We compare multiple temporal pulse characterization techniques in three different pulse duration regimes from 15 fs to sub-5 fs, as there are no available standards yet for measuring such ultrashort pulses. To accomplish this, a versatile post-compression platform was developed, where the 100 fs near infrared pulses were post-compressed to the sub-two-cycle regime in a hybrid, three-stage configuration. After each stage, the duration of the compressed pulse was measured with the d-scan, TIPTOE and SRSI techniques and the retrieved temporal intensity profiles, spectrum and spectral phases were compared. Spectral homogeneity was also measured with an imaging spectrometer to understand the input coupling conditions of the temporal measurements. Our findings suggest that the different devices give similar results in terms of temporal intensity profile, however they are extremely sensitive to alignment and to beam quality, especially in the case of the shortest pulses. We address specific steps of measurement procedures, which paves the way towards the standardization of pulse characterization in the near future.},
	year = {2024},
	pages = {15710-15722},
	orcid-numbers = {Pajer, Viktor/0000-0003-2770-510X; Bohus, János/0000-0003-1749-4142; Malakzadeh Fard Khangheshlaghi, Abdollah/0000-0003-4864-2697; Varjú, Katalin/0000-0001-6577-7417; Szabó, Gábor/0000-0001-6756-4677}
}

@{MTMT:34859572,
	title = {Recent Progress of ELI-ALPS SYLOS Systems},
	url = {https://m2.mtmt.hu/api/publication/34859572},
	author = {Csontos, János and Tóth, Szabolcs and Stanislauskas, T. and Balciunas, I. and Adamonis, J. and Lengvinas, D. and Tóth, László Tamás and Somoskői, Tamás and Prasannan Geetha, Prabhash and Nagymihály, Roland Sándor and Lopez-Martens, Rodrigo and Szabó, Gábor and Varjú, Katalin and Börzsönyi, Ádám},
	booktitle = {Laser Congress 2023 (ASSL, LAC)},
	doi = {10.1364/ASSL.2023.AW5A.2},
	unique-id = {34859572},
	abstract = {The SYLOS 1kHz OPCPA systems are the main drivers for attosecond and particle secondary sources at ELI-ALPS. Over the recent years, several upgrades increased their overall performance for the benefit of external user community.},
	year = {2023},
	orcid-numbers = {Csontos, János/0000-0003-2785-536X; Tóth, Szabolcs/0000-0002-8516-3962; Somoskői, Tamás/0000-0003-1696-4085; Prasannan Geetha, Prabhash/0000-0003-4051-368X; Lopez-Martens, Rodrigo/0000-0001-6788-7791; Szabó, Gábor/0000-0001-6756-4677; Varjú, Katalin/0000-0001-6577-7417}
}

@{MTMT:34857048,
	title = {25 Hz and 10 Hz operation of the HF-2PW laser of ELI ALPS at the 400 TW level},
	url = {https://m2.mtmt.hu/api/publication/34857048},
	author = {Nagymihály, Roland Sándor and Bohus, János and Pajer, Viktor and Lehotai, Levente and Malakzadeh Fard Khangheshlaghi, Abdollah and Bussiere, B. and Falcoz, F. and Kalashnikov, Mikhail and Varjú, Katalin and Szabó, Gábor and Neacsu, C. and Paul, P.-M. and Börzsönyi, Ádám},
	booktitle = {Laser Congress 2023 (ASSL, LAC)},
	doi = {10.1364/ASSL.2023.AM3A.2},
	unique-id = {34857048},
	abstract = {Results on the long-term operation of the HF-2PW laser of ELI ALPS at 2.5 Hz and 10 Hz repetition rates will be presented at the compressed energy of 10 J with <25 fs pulse duration.},
	year = {2023},
	orcid-numbers = {Bohus, János/0000-0003-1749-4142; Pajer, Viktor/0000-0003-2770-510X; Malakzadeh Fard Khangheshlaghi, Abdollah/0000-0003-4864-2697; Varjú, Katalin/0000-0001-6577-7417; Szabó, Gábor/0000-0001-6756-4677}
}

@{MTMT:34856974,
	title = {Robust post-compression of multi-mJ pulses at 800 nm central wavelength with a single thin YAG plate},
	url = {https://m2.mtmt.hu/api/publication/34856974},
	author = {Nagymihály, Roland Sándor and Pajer, Viktor and Lehotai, Levente and Bohus, János and Malakzadeh Fard Khangheshlaghi, Abdollah and Kiss, Bálint and Börzsönyi, Ádám and Kalashnikov, Mikhail},
	booktitle = {Laser Congress 2023 (ASSL, LAC)},
	doi = {10.1364/ASSL.2023.ATu1A.4},
	unique-id = {34856974},
	abstract = {5 mJ, 25 fs laser pulses at 800 nm central wavelength were post-compressed, for the first time, in a single thin YAG plate to 8.3 fs with 3 mJ output energy with high beam quality.},
	year = {2023},
	orcid-numbers = {Pajer, Viktor/0000-0003-2770-510X; Bohus, János/0000-0003-1749-4142; Malakzadeh Fard Khangheshlaghi, Abdollah/0000-0003-4864-2697}
}

@article{MTMT:34489471,
	title = {The petawatt laser of ELI ALPS: reaching the 700 TW level at 10 Hz repetition rate},
	url = {https://m2.mtmt.hu/api/publication/34489471},
	author = {Nagymihály, Roland Sándor and Falcoz, Franck and Bussiere, Benoit and Bohus, János and Pajer, Viktor and Lehotai, Levente and Ravet-Senkans, Muriel and Roy, Olivier and Calvez, Steven and Mollica, Florian and Branly, Stephane and Paul, Pierre-Mary and Börzsönyi, Ádám and Varjú, Katalin and Szabó, Gábor and Kalashnikov, Mikhail},
	doi = {10.1364/OE.509615},
	journal-iso = {OPT EXPRESS},
	journal = {OPTICS EXPRESS},
	volume = {31},
	unique-id = {34489471},
	issn = {1094-4087},
	abstract = {Performance of the novel high repetition rate HF-PW laser system of ELI ALPS is presented in its first operation phase at 400 TW and 700 TW levels. Long-term operation was tested at 2.5 and 10 Hz repetition rates, where an exceptional 0.66% and 1.08% shot-to-shot energy stability was demonstrated, respectively. Thorough spatio-spectral and temporal measurements confirmed high quality output pulses with a Strehl ratio of >0.9 after compression at both repetition rates. Amplified pulses with an unprecedentedly high 240 W average power were reached for the first time from a PW-class amplifier chain by using novel pseudo-active mirror disk amplification-based pump lasers.},
	year = {2023},
	pages = {44160-44176},
	orcid-numbers = {Bohus, János/0000-0003-1749-4142; Pajer, Viktor/0000-0003-2770-510X; Varjú, Katalin/0000-0001-6577-7417; Szabó, Gábor/0000-0001-6756-4677}
}

@{MTMT:34413317,
	title = {Status of the ELI-ALPS High Repetition Rate (HR) Laser Systems},
	url = {https://m2.mtmt.hu/api/publication/34413317},
	author = {Jójárt, Péter and Seres, Imre and Bengery, Zsolt Gábor and Gilicze, Barnabás and Várallyay, Zoltán Krisztián and Börzsönyi, Ádám and Shestaev, Evgeny and Walther, Nico and Tschernajew, Maxim and Grebing, Christian and Breitkopf, Sven and Eidam, Tino and Limpert, Jens},
	booktitle = {2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)},
	doi = {10.1109/CLEO/Europe-EQEC57999.2023.10231605},
	unique-id = {34413317},
	year = {2023},
	orcid-numbers = {Jójárt, Péter/0000-0002-5161-2723; Várallyay, Zoltán Krisztián/0000-0002-8675-2005}
}

@{MTMT:34413308,
	title = {First Operation Phase of the 10 Hz 2 PW Laser of ELI ALPS},
	url = {https://m2.mtmt.hu/api/publication/34413308},
	author = {Nagymihály, Roland Sándor and Bohus, János and Pajer, Viktor and Malakzadeh Fard Khangheshlaghi, Abdollah and Lehotai, Levente and Bussiere, Benoit and Falcoz, Franck and Ravet-Senkans, Muriel and Roy, Olivier and Paul, Pierre-Mary and Börzsönyi, Ádám and Varjú, Katalin and Szabó, Gábor and Kalashnikov, Mikhail},
	booktitle = {2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)},
	doi = {10.1109/CLEO/Europe-EQEC57999.2023.10231672},
	unique-id = {34413308},
	year = {2023},
	orcid-numbers = {Bohus, János/0000-0003-1749-4142; Pajer, Viktor/0000-0003-2770-510X; Malakzadeh Fard Khangheshlaghi, Abdollah/0000-0003-4864-2697; Varjú, Katalin/0000-0001-6577-7417; Szabó, Gábor/0000-0001-6756-4677}
}

@{MTMT:34413284,
	title = {Multi-TW Laser Pulses in the Single-Cycle Regime by Single Thin Plate Compression},
	url = {https://m2.mtmt.hu/api/publication/34413284},
	author = {Tóth, Szabolcs and Seres, Imre and Lehotai, Levente and Csontos, János and Pajer, Viktor and Farkas, Arnold Péter and Mohácsi, Árpád and Börzsönyi, Ádám and Osvay, Károly and Nagymihály, Roland Sándor},
	booktitle = {2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)},
	doi = {10.1109/CLEO/Europe-EQEC57999.2023.10232099},
	unique-id = {34413284},
	year = {2023},
	orcid-numbers = {Tóth, Szabolcs/0000-0002-8516-3962; Csontos, János/0000-0003-2785-536X; Pajer, Viktor/0000-0003-2770-510X; Farkas, Arnold Péter/0000-0002-9392-7221; Osvay, Károly/0000-0002-3468-8312}
}

@{MTMT:34413249,
	title = {Analysis of Wavelength Dependent Wavefront Deformation in Thin Plate Compressors for Energetic Single-Cycle Laser Pulses},
	url = {https://m2.mtmt.hu/api/publication/34413249},
	author = {Lehotai, Levente and Tóth, Szabolcs and Seres, Imre and Csontos, János and Pajer, Viktor and Börzsönyi, Ádám and Osvay, Károly and Nagymihály, Roland Sándor},
	booktitle = {2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)},
	doi = {10.1109/CLEO/Europe-EQEC57999.2023.10231733},
	unique-id = {34413249},
	year = {2023},
	orcid-numbers = {Tóth, Szabolcs/0000-0002-8516-3962; Csontos, János/0000-0003-2785-536X; Pajer, Viktor/0000-0003-2770-510X; Osvay, Károly/0000-0002-3468-8312}
}

@inproceedings{MTMT:34199490,
	title = {Recent status of the SYLOS 2 laser system of ELI-ALPS},
	url = {https://m2.mtmt.hu/api/publication/34199490},
	author = {Csontos, János and Tóth, Szabolcs and Stanislauskas, T. and Balciunas, I. and Adamonis, J. and Abromavičius, I. and Tóth, László Tamás and Somoskői, Tamás and Prasannan Geetha, Prabhash and Abt, Dániel and Kajla, Barna and Lopez-Martens, Rodrigo and Börzsönyi, Ádám},
	booktitle = {High-Power, High-Energy Lasers and Ultrafast Optical Technologies 2023},
	doi = {10.1117/12.2665699},
	volume = {12577},
	unique-id = {34199490},
	abstract = {This manuscript presents the most recent upgrades made on SYLOS2 laser system in ELI-ALPS1. These modifications on the system were done based on the feedback from the experimental end-stations during the last 3 years. First, the long virtual propagation of the super-Gaussian output beam reduced by modifying the imaging telescope after the amplification stages, which significantly improved the beam profile hindered by the propagation-related diffraction pattern. The optical parametric chirped pulse amplification (OPCPA) stages were equipped with new nonlinear crystals which enabled to reach 42 mJ output energy with <8 fs pulse duration, which is 10 mJ more than the previous configuration. To increase the high-harmonic generation (HHG) efficiency a spatial filter was installed in the laser system which provides a nearly Gaussian beam profile at the output with 80% transmission. The spatial filter is based on a glass cone and is operated under vacuum. Currently, >20 mJ, <8 fs CEP-stable pulses are provided at the user stations after the beam transport system. © 2023 SPIE.},
	keywords = {ULTRASHORT PULSES; Nonlinear optics; Parametric amplification; Parametric amplification; High harmonic generation; Harmonic generation; Gaussian beams; Laser systems; Laser optics; Spatial filters; Optical parametric amplifiers; high-harmonic generation; Beamforming; OPCPA; spatial filter; Super-Gaussian; Optical parametric chirped pulses amplification; TW-level; TW-level; End stations; Gaussian output; Recent status},
	year = {2023},
	orcid-numbers = {Csontos, János/0000-0003-2785-536X; Tóth, Szabolcs/0000-0002-8516-3962; Somoskői, Tamás/0000-0003-1696-4085; Prasannan Geetha, Prabhash/0000-0003-4051-368X; Lopez-Martens, Rodrigo/0000-0001-6788-7791}
}