• 2045 Citations
  • 25 h-Index
1982 …2019
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Research Output 1982 2019

  • 2045 Citations
  • 25 h-Index
  • 109 Article
  • 12 Conference contribution
  • 2 Chapter
  • 1 Review article
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Article
2019

Hydroxyl ion probing transition metal dopants occupying Nb sites in stoichiometric LiNbO3

Kovács, L., Kocsor, L., Tichy-Rács, É., Lengyel, K., Bencs, L. & Corradi, G., jan. 1 2019, In : Optical Materials Express. 9, 12, p. 4506-4516 11 p.

Research output: Article

Transition metals
Doping (additives)
Ions
Crystal growth from melt
Vibrational spectra
Open Access
Ball milling
lithium niobates
balls
Lithium
Heat treatment
2018
2 Citations (Scopus)

Polaron-mediated luminescence in lithium niobate and lithium tantalate and its domain contrast

Reichenbach, P., Kämpfe, T., Haußmann, A., Thiessen, A., Woike, T., Steudtner, R., Kocsor, L., Szaller, Z., Kovács, L. & Eng, L. M., máj. 1 2018, In : Crystals. 8, 5, 214.

Research output: Article

Gene Conversion
Polarons
lithium niobates
Lithium
polarons
2017
3 Citations (Scopus)

Lattice site of rare-earth ions in stoichiometric lithium niobate probed by OH- vibrational spectroscopy

Kovács, L., Kocsor, L., Szaller, Z., Hajdara, I., Dravecz, G., Lengyel, K. & Corradi, G., aug. 1 2017, In : Crystals. 7, 8, 230.

Research output: Article

Vibrational spectroscopy
lithium niobates
Rare earths
Lithium
rare earth elements
1 Citation (Scopus)

Optical and EPR spectroscopy of Er3+ in lithium yttrium borate, Li6Y(BO3)3: Er single crystals

Kovács, L., Arceiz Casas, S., Corradi, G., Tichy-Rács, Kocsor, L., Lengyel, K., Ryba-Romanowski, W., Strzep, A., Scholle, A. & Greulich-Weber, S., okt. 1 2017, In : Optical Materials. 72, p. 270-275 6 p.

Research output: Article

Yttrium
Borates
borates
yttrium
Lithium
3 Citations (Scopus)
Refractive index
absorptivity
Lithium
lithium
refractivity
2016
Crystals
symmetry
Doping (additives)
electronics
Ions
5 Citations (Scopus)

Index of Refraction and Absorption Coefficient Spectra of Paratellurite in the Terahertz Region

Unferdorben, M., Buzády, A., Hebling, J., Kiss, K., Hajdara, I., Kovács, L., Péter, A. & Pálfalvi, L., márc. 2 2016, (Accepted/In press) In : Journal of Infrared, Millimeter, and Terahertz Waves. p. 1-7 7 p.

Research output: Article

Refraction
refraction
absorptivity
Polarization
polarization
lithium niobates
crystals
erbium
life (durability)
9 Citations (Scopus)
Yttrium
Atomic absorption spectrometry
Graphite
yttrium
Lithium
2015
2 Citations (Scopus)

Synthesis and characterization of Y2(SiO4)O: Ce with LiF and NaF additives

Laczai, N., Péter, A., Kovács, L., Bencs, L. & Lörincz, E., máj. 10 2015, In : Solid State Sciences. 45, p. 23-29 7 p.

Research output: Article

Cerium
Yttrium
synthesis
cerium
yttrium
2014
Stretching
Absorption spectra
Crystals
Infrared absorption
Phonons
2 Citations (Scopus)

A very high momentum particle identification detector

Acconcia, T. V., Agócs, A., Barile, F., Barnaföldi, G., Bellwied, R., Bencédi, G., Bencze, G., Berényi, D., Boldizsár, L., Chattopadhyay, S., Cindolo, F., Cossyleon, K., Chinellato, D. D., D’Ambrosio, S., Das, D., Das, K., Das-Bose, L., Dash, A. K., De Cataldo, G., De Pasquale, S. & 41 others, Di Bari, D., Di Mauro, A., Futó, E., García-Solis, E., Hamar, G., Harton, A., Iannone, G., Jayarathna, S. P., Jimenez, R. T., Kim, D. W., Kim, J. S., Knospe, A., Kovács, L., Lévai, P., Nappi, E., Markert, C., Martinengo, P., Mayani, D., Molnár, L., Oláh, L., Paić, G., Pastore, C., Patimo, G., Patino, M. E., Peskov, V., Pinsky, L., Piuz, F., Piyarathna, D. B., Pochybová, S., Sgura, I., Sinha, T., Song, J., Takahashi, J., Timmins, A., Van Beelen, J. B., Varga, D., Volpe, G., Weber, M., Xaplanteris, L., Yi, J. & Yoo, I. K., 2014, In : European Physical Journal Plus. 129, 5

Research output: Article

momentum
detectors
heavy ions
transverse momentum
partons
8 Citations (Scopus)

Homogeneous linewidth measurements of Yb3+ ions in congruent and stoichiometric lithium niobate crystals

Kis, Z., Mandula, G., Lengyel, K., Hajdara, I., Kovács, L. & Imlau, M., 2014, In : Optical Materials. 37, C, p. 845-853 9 p.

Research output: Article

lithium niobates
Linewidth
Lithium
Doping (additives)
Ions
12 Citations (Scopus)
doped crystals
Ions
damage
Crystals
crystals
4 Citations (Scopus)

VHMPID RICH prototype using pressurized C4F8O radiator gas and VUV photon detector

Acconcia, T. V., Agócs, A., Barile, F., Barnaföldi, G., Bellwied, R., Bencédi, G., Bencze, G., Berényi, D., Boldizsár, L., Chattopadhyay, S., Chinellato, D. D., Cindolo, F., Cossyleon, K., Das, D., Das, K., Das-Bose, L., Dash, A. K., D'Ambrosio, S., De Cataldo, G., De Pasquale, S. & 38 others, Di Bari, D., Di Mauro, A., Futó, E., Garcia-Solis, E., Hamar, G., Harton, A., Iannone, G., Jimenez, R. T., Kim, D. W., Kim, J. S., Knospe, A., Kovács, L., Lévai, P., Markert, C., Martinengo, P., Molnár, L., Nappi, E., Oláh, L., Paić, G., Pastore, C., Patimo, G., Patino, M. E., Peskov, V., Pinsky, L., Piuz, F., Pochybová, S., Sgura, I., Sinha, T., Song, J., Takahashi, J., Timmins, A., Van Beelen, J. B., Varga, D., Volpe, G., Weber, M., Xaplanteris, L., Yi, J. & Yoo, I. K., dec. 11 2014, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 767, p. 50-60 11 p.

Research output: Article

Radiators
radiators
Momentum
Photons
prototypes
2013

Extended Defects in Semiconductors

Stanek, C., Nikl, M., Greulich-Weber, S. & Kovács, L., febr. 2013, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 10, 2, p. 150-152 3 p.

Research output: Article

defects
radiation effects
France
Latvia
computerized simulation
16 Citations (Scopus)

Photorefractive damage resistance threshold in stoichiometric LiNbO 3: Zr crystals

Kovács, L., Szaller, Z., Lengyel, K., Péter, A., Hajdara, I., Mandula, G., Pálfalvi, L. & Hebling, J., aug. 1 2013, In : Optics Letters. 38, 15, p. 2861-2864 4 p.

Research output: Article

damage
thresholds
ultraviolet absorption
yield point
infrared absorption
2 Citations (Scopus)

R&D studies of a RICH detector using pressurized C4F 8O radiator gas and a CsI-based gaseous photon detector

Agócs, A., Barile, F., Barnaföldi, G., Bellwied, R., Bencédi, G., Bencze, G., Berényi, D., Boldizsár, L., Chattopadhyay, S., Chinellato, D. D., Cindolo, F., Das, D., Das, K., Das-Bose, L., De Cataldo, G., Di Bari, D., Di Mauro, A., Futó, E., Garcia, E., Hamar, G. & 30 others, Harton, A., Jimenez, R. T., Kim, D. W., Kim, J. S., Knospe, A., Kovács, L., Lévai, P., Markert, C., Martinengo, P., Molnar, L., Nappi, E., Olah, L., Paić, G., Pastore, C., Patino, M. E., Peskov, V., Pinsky, L., Piuz, F., Pochybová, S., Sgura, I., Sinha, T., Song, J., Timmins, A., Van Beelen, J. B., Varga, D., Volpe, G., Weber, M., Xaplanteris, L., Yi, J. & Yoo, I. K., 2013, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 732, p. 361-365 5 p.

Research output: Article

Radiators
radiators
Momentum
Photons
Detectors
1 Citation (Scopus)
Alkalies
Crystallization
lithium niobates
Ferroelectric materials
Potassium
2012
10 Citations (Scopus)

Determination of trace elements in lithium niobate crystals by solid sampling and solution-based spectrometry methods

Bencs, L., György, K., Kardos, M., Osán, J., Alföldy, B., Varga, I., Ajtony, Z., Szoboszlai, N., Stefánka, Z., Széles, É. & Kovács, L., máj. 13 2012, In : Analytica Chimica Acta. 726, p. 1-8 8 p.

Research output: Article

Graphite
Trace Elements
Atomic absorption spectrometry
lithium
Spectrometry
1 Citation (Scopus)

Effect of alkali doping on the Raman spectra of potassium lithium niobate crystals

Hajdara, I., Lengyel, K., Kovács, L., Péter, A. & Szaller, Z. S., 2012, In : Ferroelectrics. 428, 1, p. 57-63 7 p.

Research output: Article

Alkalies
lithium niobates
Potassium
Raman scattering
alkalies
1 Citation (Scopus)

Optical spectroscopy of multiferroic rare-earth manganites

Kovács, L., Lengyel, K. & Gospodinov, M., 2012, In : Ferroelectrics. 428, 1, p. 82-86 5 p.

Research output: Article

Manganites
Rare earths
rare earth elements
spectroscopy
Absorption spectroscopy
2011
1 Citation (Scopus)
Manganites
Rare earths
rare earth elements
spectroscopy
Ions
7 Citations (Scopus)
libration
ions
low frequencies
absorption spectra
single crystals
6 Citations (Scopus)

Vibrations of H+(D+) in stoichiometric LiNbO 3 single crystal

Szalay, V., Lengyel, K., Kovács, L., Timón, V. & Hernández-Laguna, A., szept. 28 2011, In : The Journal of Chemical Physics. 135, 12, 124501.

Research output: Article

Hamiltonians
Potential energy surfaces
Mathematical operators
Single crystals
Protons
2010
5 Citations (Scopus)
thresholds
kinetics
crystals
ions
temperature
2009
3 Citations (Scopus)

Infrared absorption spectra of pure and doped YAl3(BO 3)4 single crystals

Kovács, L., Mazzera, M., Beregi, E. & Capelletti, R., febr. 2009, In : Applied Physics B: Lasers and Optics. 94, 2, p. 273-277 5 p.

Research output: Article

infrared absorption
infrared spectra
absorption spectra
single crystals
optical spectrum
2008
9 Citations (Scopus)

Characterization of potassium lithium niobate (KLN) ceramic system

Péter, A., Hajdara, I., Lengyel, K., Dravecz, G., Kovács, L. & Tóth, M., szept. 8 2008, In : Journal of Alloys and Compounds. 463, 1-2, p. 398-402 5 p.

Research output: Article

Potassium
Lithium
Defects
Tungsten
Phase stability
1 Citation (Scopus)

Compositional dependence and structure of hydroxyl ion defects in ferroelectric potassium lithium niobate

Hajdara, I., Lengyel, K., Kovács, L., Péter, A., Dravecz, G. & Szaller, Z. S., 2008, In : Ferroelectrics. 369, 1 PART 3, p. 98-107 10 p.

Research output: Article

lithium niobates
Ferroelectric materials
Potassium
potassium
Lithium
Doping (additives)
Crystals
Crystal growth from melt
Thermal gradients
Ferroelectric materials
9 Citations (Scopus)

Vibrational frequencies of the impurity-centred oxygen tetrahedra in sillenites

Kovács, L., Capelletti, R. & Gospodinov, M., jan. 16 2008, In : Vibrational Spectroscopy. 46, 1, p. 69-75 7 p.

Research output: Article

Vibrational spectra
Metals
Impurities
Oxygen
Stretching
2007
38 Citations (Scopus)

A computational study of intrinsic and extrinsic defects in LiNbO 3

Araujo, R. M., Lengyel, K., Jackson, R. A., Kovács, L. & Valerio, M. E. G., jan. 31 2007, In : Journal of Physics Condensed Matter. 19, 4, 046211.

Research output: Article

Ions
Defects
defects
Lithium
Physical properties
3 Citations (Scopus)

Computer modelling of intrinsic and substitutional defects in LiNbO 3

Araujo, R. M., Lengyel, K., Jackson, R. A., Valerio, M. E. G. & Kovács, L., 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 1201-1204 4 p.

Research output: Article

defects
lithium niobates
energy
ions
physical properties
25 Citations (Scopus)
lithium niobates
vibrational spectra
ultraviolet absorption
crystals
temperature effects
3 Citations (Scopus)

Hydroxil ions in scheelite type molybdates and tungstates

Kovács, L., Péter, A., Ivleva, L. I., Baraldi, A. & Capelletti, R., 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 856-859 4 p.

Research output: Article

scheelite
tungstates
molybdates
ions
crystals
8 Citations (Scopus)
alkali metals
metal oxides
crystals
infrared spectra
lithium
4 Citations (Scopus)
lithium niobates
potassium
Curie temperature
crystals
ultraviolet spectra
10 Citations (Scopus)
Raman spectra
crystals
thresholds
ions
doped crystals
23 Citations (Scopus)
stoichiometry
Raman spectra
thresholds
crystals
vibration
2006
7 Citations (Scopus)

Alkali metal oxide solvents in the growth of stoichiometric LiNbO 3 single crystal

Dravecz, G., Péter, A., Polgár, K. & Kovács, L., jan. 15 2006, In : Journal of Crystal Growth. 286, 2, p. 334-337 4 p.

Research output: Article

Alkali Metals
Alkali metals
alkali metals
Oxides
metal oxides
7 Citations (Scopus)

Light-induced phase and amplitude gratings in centrosymmetric Gadolinium Gallium garnet doped with Calcium

Ellabban, M. A., Fally, M., Rupp, R. A. & Kovács, L., jan. 23 2006, In : Optics Express. 14, 2, p. 593-602 10 p.

Research output: Article

gadolinium-gallium garnet
calcium
gratings
doped crystals
refractivity
27 Citations (Scopus)

Photochromism of doped terbium gallium garnet

Dachraoui, H., Rupp, R. A., Lengyel, K., Ellabban, M. A., Fally, M., Corradi, G., Kovács, L. & Ackermann, L., 2006, In : Physical Review B - Condensed Matter and Materials Physics. 74, 14, 144104.

Research output: Article

Terbium
Cerium
Photochromism
photochromism
Gallium
20 Citations (Scopus)

Structural, optical and dielectric properties of relaxor-ferroelectric Pb0.78Ba0.22Sc0.5Ta0.5O3

Marinova, V., Mihailova, B., Malcherek, T., Paulmann, C., Lengyel, K., Kovács, L., Veleva, M., Gospodinov, M., Güttler, B., Stosch, R. & Bismayer, U., aug. 9 2006, In : Journal of Physics Condensed Matter. 18, 31, L01.

Research output: Article

polyhedrons
Dielectric properties
Ferroelectric materials
dielectric properties
Structural properties
2005
6 Citations (Scopus)

Decay of photorefractive gratings in LiNb O3: Fe by neutron irradiation

Mandula, G., Rupp, R. A., Balaskó, M. & Kovács, L., ápr. 4 2005, In : Applied Physics Letters. 86, 14, p. 1-3 3 p., 141107.

Research output: Article

neutron irradiation
gratings
neutrons
cold neutrons
decay
8 Citations (Scopus)

FTIR absorption study of hydroxyl ions in KHo(WO4)2 single crystals

Kovács, L., Borowiec, M. T., Majchrowski, A., Baraldi, A. & Capelletti, R., ápr. 2005, In : Crystal Research and Technology. 40, 4-5, p. 444-448 5 p.

Research output: Article

Infrared absorption
infrared absorption
Fourier transforms
Single crystals
single crystals
58 Citations (Scopus)

Threshold concentration of MgO in near-stoichiometric LiNbO3 crystals

Péter, A., Polgár, K., Kovács, L. & Lengyel, K., okt. 15 2005, In : Journal of Crystal Growth. 284, 1-2, p. 149-155 7 p.

Research output: Article

Crystals
thresholds
crystals
Crystallization
Crystal growth
2004
18 Citations (Scopus)

Composition dependence of the OH-stretch-mode spectrum in lithium tantalate

Bäumer, C., David, C., Betzler, K., Hesse, H., Lengyel, K., Kovács, L. & Wöhlecke, M., márc. 2004, In : Physica Status Solidi (A) Applied Research. 201, 4

Research output: Article

Lithium
lithium
Crystals
Chemical analysis
crystals
29 Citations (Scopus)

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4: Dy3+ (YAB:Dy) crystal

Dominiak-Dzik, G., Ryba-Romanowski, W., Kovács, L. & Beregi, E., aug. 2004, In : Radiation Measurements. 38, 4-6, p. 557-561 5 p.

Research output: Article

Luminescence
luminescence
Crystals
crystals
Dysprosium
13 Citations (Scopus)
charge transfer
integrated optics
polarons
bleaching
crystals