TY - JOUR AU - Benabdelghani, Imene AU - Tóth, György AU - Krizsán, Gergő AU - Bazsó, Gábor AU - Szaller, Zsuzsanna AU - Mbithi, Nelson AU - Rácz, Péter AU - Dombi, Péter AU - Polónyi, Gyula AU - Hebling, János TI - Three-photon and four-photon absorption in lithium niobate measured by the Z-scan technique JF - OPTICS EXPRESS J2 - OPT EXPRESS VL - 32 PY - 2024 IS - 5 SP - 7030 EP - 7043 PG - 14 SN - 1094-4087 DO - 10.1364/OE.505995 UR - https://m2.mtmt.hu/api/publication/34596731 ID - 34596731 N1 - Export Date: 21 March 2024 AB - Open-aperture Z-scan measurements have been carried out to investigate the three-photon (3 PA) and four-photon absorption (4 PA) coefficients at 800 nm and 1030 nm wavelengths, respectively in congruent and stoichiometric lithium niobate (cLN, sLN) with different concentrations of Mg doping. The laser pulse duration at the two wavelengths were 40 and 190 fs. The peak intensity inside the crystals varied between approximately 110 and 550 GW/cm 2 . The 3 PA and 4 PA coefficients were evaluated using a theoretical model and the results suggest that their minima are at or around the Mg doping level corresponding to the threshold for suppressing photo-refraction for both cLN and sLN. This result can be attributed to the contribution of crystal defects to the 3 PA and 4 PA processes. Furthermore, the 4 PA at 1030 nm exhibited greater nonlinear absorption than the 3 PA at 800 nm under the same intensity level. Possible reasons for this unexpected behavior are discussed. Overall, comparing the 3 PA and 4 PA values of these crystals will enable for selection of the optimum composition of LN crystal for efficient THz generation and for other nonlinear optical processes requiring high pump intensities. LA - English DB - MTMT ER - TY - JOUR AU - Gómez-Guzmán, J.M. AU - Opel, M. AU - Veres, Tamás AU - Link, P. AU - Bottyán, László TI - Structural, electrical and magnetic properties of reactively DC sputtered Cu and Ti thin films. Application to Cu/Ti neutron supermirrors for low spin-flip applications JF - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT J2 - NUCL INSTRUM METH A VL - 1059 PY - 2024 PG - 11 SN - 0168-9002 DO - 10.1016/j.nima.2023.169005 UR - https://m2.mtmt.hu/api/publication/34536288 ID - 34536288 N1 - Export Date: 07 March 2024; CODEN: NIMAE LA - English DB - MTMT ER - TY - JOUR AU - Kaufman, B. AU - Marquetand, P. AU - Rozgonyi, Tamás AU - Weinacht, T. TI - Long-Lived Electronic Coherences in Molecules JF - PHYSICAL REVIEW LETTERS J2 - PHYS REV LETT VL - 131 PY - 2023 IS - 26 PG - 6 SN - 0031-9007 DO - 10.1103/PhysRevLett.131.263202 UR - https://m2.mtmt.hu/api/publication/34588450 ID - 34588450 N1 - Export Date: 18 March 2024 CODEN: PRLTA LA - English DB - MTMT ER - TY - JOUR AU - Merkel, Dániel AU - Sájerman, K. AU - Váczi, Tamás AU - Lenk, Sándor AU - Hegedűs, Gergő AU - Sajti, Szilárd Mihály AU - Németh, Attila AU - Gracheva, Maria AU - Petrik, Péter AU - Mukherjee, Deshabrato AU - Horváth, Zsolt Endre AU - Nagy, Dénes Lajos AU - Lengyel, Attila TI - Laser irradiation effects in FeRh thin film JF - MATERIALS RESEARCH EXPRESS J2 - MATER RES EXPRESS VL - 10 PY - 2023 IS - 7 PG - 7 SN - 2053-1591 DO - 10.1088/2053-1591/ace4a3 UR - https://m2.mtmt.hu/api/publication/34536298 ID - 34536298 LA - English DB - MTMT ER - TY - CHAP AU - Hasse, K. AU - Suntsov, S. AU - Püschel, S. AU - Tanaka, H. AU - Kränkel, C. AU - Bányász, István AU - Kip, D. TI - Ion-implanted diced ridge waveguides in Pr:YLF T2 - 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) PB - IEEE CY - Online kiadás SN - 9798350345995 PY - 2023 SP - 1 EP - 1 PG - 1 DO - 10.1109/CLEO/EUROPE-EQEC57999.2023.10231430 UR - https://m2.mtmt.hu/api/publication/34496107 ID - 34496107 N1 - Export Date: 08 March 2024; Conference name: 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023; Conference date: 26 June 2023 through 30 June 2023; Conference code: 192392 LA - English DB - MTMT ER - TY - JOUR AU - Vancza, Andor AU - Kapta, Marcell Levente AU - Papp, Mariann AU - Vankó, György AU - Keszthelyi, Tamás TI - Determining the Quintet Lifetimes in Side-ring Substituted [Fe(terpy)2]2+ Complexes JF - PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING J2 - PERIOD POLYTECH CHEM ENG VL - 67 PY - 2023 IS - 4 SP - 547 EP - 556 PG - 10 SN - 0324-5853 DO - 10.3311/PPch.22748 UR - https://m2.mtmt.hu/api/publication/34400257 ID - 34400257 N1 - Export Date: 08 March 2024 LA - English DB - MTMT ER - TY - JOUR AU - Pápai, Mátyás Imre AU - Rozgonyi, Tamás AU - Vankó, György TI - Ultrafast 3MLCT quenching and vibrational coherence: excited-state dynamics of the first-discovered Fe(II)-carbene sensitiser resolved JF - JOURNAL OF MATERIALS CHEMISTRY A J2 - J MATER CHEM A VL - 11 PY - 2023 IS - 47 SP - 25955 EP - 25962 PG - 8 SN - 2050-7488 DO - 10.1039/D3TA05985E UR - https://m2.mtmt.hu/api/publication/34377071 ID - 34377071 N1 - CODEN: JMCAE AB - The application of N-heterocyclic carbene (NHC) ligands represents a groundbreaking advance towards environment-friendly light-harvesting complexes, yet, even the excited-state dynamics of the first-discovered Fe-NHC photosensitiser [Fe(bmip)2]2+ (bmip = 2,6-bis(3-methyl-imidazole-1-ylidine)-pyridine) remain controversial. Using full-dimensional trajectory surface hopping (TSH) spin-vibronic dynamics simulations, we fully resolve and clarify the deactivation mechanism of [Fe(bmip)2]2+ . In agreement with the most recent fs-resolved X-ray experiments, we find that the excited-state population branches into triplet metal-to-ligand charge transfer (3MLCT) and metal-centered states (3MC) on early sub-ps timescales (~200 fs). The ultrafast 3MLCT quenching by 3MC is driven by multidimensional excited-state ligand motion; it is this deactivation process that ultimately weakens the photosensitising efficiency of [Fe(bmip)2]2+. Crucially, the preservation of vibrational coherence along the covalent Fe-C bonds (~300 fs vibrational period) and the appearance of resulting coherent oscillations in various time-resolved experimental data unambiguously evidences the presence of the early sub-ps 3MC component. LA - English DB - MTMT ER - TY - JOUR AU - Avdeev, MV AU - Gapon, IV AU - Merkel, Dániel AU - Yerdauletov, M AU - Djanseitov, DM AU - Tropin, TV TI - НИЗКОПЕРИОДИЧЕСКИЕ МНОГОСЛОЙНЫЕ ПЛЕНКИ TI/NIXMOY С ВАРЬИРУЕМОЙ КВАЗИОДНОРОДНОЙ СТРУКТУРОЙ ДЛЯ НЕЙТРОННОЙ РЕФЛЕКТОМЕТРИИ JF - POVERHNOST: RENTGENOVSKIE SINKHROTRONNYE I NEITRONNYE ISSLEDOVANIYA J2 - POVERHNOST PY - 2023 IS - 8 SP - 46 EP - 51 PG - 6 SN - 1028-0960 UR - https://m2.mtmt.hu/api/publication/34224920 ID - 34224920 LA - Russian DB - MTMT ER - TY - JOUR AU - Zymaková, A. AU - Precek, M. AU - Picchiotti, A. AU - Błachucki, W. AU - Zymak, I. AU - Szlachetko, J. AU - Vankó, György AU - Németh, Zoltán AU - Sá, J. AU - Wiste, T. AU - Andreasson, J. TI - X-ray spectroscopy station for sample characterization at ELI Beamlines JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 13 PY - 2023 IS - 1 PG - 9 SN - 2045-2322 DO - 10.1038/s41598-023-43924-y UR - https://m2.mtmt.hu/api/publication/34207813 ID - 34207813 N1 - Export Date: 08 March 2024 LA - English DB - MTMT ER - TY - JOUR AU - Merkel, Dániel AU - Sajti, Szilárd Mihály AU - Deák, László AU - Hegedűs, Gergő AU - Horváth, Zsolt Endre AU - Lengyel, Attila TI - Iron self-diffusion in B2-FeRh thin film JF - VACUUM J2 - VACUUM VL - 218 PY - 2023 PG - 5 SN - 0042-207X DO - 10.1016/j.vacuum.2023.112617 UR - https://m2.mtmt.hu/api/publication/34189371 ID - 34189371 LA - English DB - MTMT ER -