• 2083 Citations
  • 25 h-Index
1982 …2020

Research output per year

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Research Output

2020

Temperature-dependent terahertz time-domain spectroscopy study of Mg-doped stoichiometric lithium niobate

Buzády, A., Gálos, R., Makkai, G., Wu, X., Tóth, G., Kovács, L., Almási, G., Hebling, J. & Pálfalvi, L., Apr 1 2020, In : Optical Materials Express. 10, 4, p. 998-1006 9 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
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: Contribution to journalArticle

Mechanochemical Reactions of Lithium Niobate Induced by High-Energy Ball-Milling

Kocsor, L., Péter, L., Corradi, G., Kis, Z., Gubicza, J. & Kovács, L., Jul 2019, In : Crystals. 9, 7, 334.

Research output: Contribution to journalArticle

Open Access
2018

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., May 2018, In : Crystals. 8, 5, 214.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

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 2017, In : Crystals. 7, 8, 230.

Research output: Contribution to journalArticle

4 Citations (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., Oct 1 2017, In : Optical Materials. 72, p. 270-275 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Refractive Index and Absorption Coefficient of Undoped and Mg-Doped Lithium Tantalate in the Terahertz Range

Buzády, A., Unferdorben, M., Tóth, G., Hebling, J., Hajdara, I., Kovács, L. & Pálfalvi, L., Aug 1 2017, In : Journal of Infrared, Millimeter, and Terahertz Waves. 38, 8, p. 963-971 9 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2016

Effect of symmetry reduction on the electronic transitions in polytypic GdAl3(BO3)4: Eu:Tb crystals

Lengyel, K., Beregi, E., Földvári, I., Corradi, G., Kovács, L., Solarz, P. & Ryba-Romanowski, W., Mar 1 2016, In : Optical Materials. 53, p. 30-33 4 p.

Research output: Contribution to journalArticle

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., Mar 2 2016, (Accepted/In press) In : Journal of Infrared, Millimeter, and Terahertz Waves. p. 1-7 7 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Site-selective measurement of relaxation properties at 980 nm in Er3-doped congruent and stoichiometric lithium niobate crystals

Mandula, G., Kis, Z., Kovács, L., Szaller, Z. & Krampf, A., Apr 1 2016, In : Applied Physics B: Lasers and Optics. 122, 4, 72.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2015

Growth, defect structure, and THz application of stoichiometric lithium niobate

Lengyel, K., Péter, Kovács, L., Corradi, G., Pálfalvi, L., Hebling, J., Unferdorben, M., Dravecz, G., Hajdara, I., Szaller, Z. & Polgár, K., Dec 1 2015, In : Applied Physics Reviews. 2, 4, 040601.

Research output: Contribution to journalReview article

42 Citations (Scopus)

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

Laczai, N., Péter, Á., Kovács, L., Bencs, L. & Lorincz, E., May 10 2015, In : Solid State Sciences. 45, p. 23-29 7 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2014

A very high momentum particle identification detector

Acconcia, T. V., Agócs, A. G., Barile, F., Barnaföldi, G. 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, 91.

Research output: Contribution to journalArticle

2 Citations (Scopus)

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

Kis, Z., Mandula, G., Lengyel, K., Hajdara, I., Kovacs, L. & Imlau, M., Jan 1 2014, In : Optical Materials. 37, C, p. 845-853 9 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Hydroxyl ions in stoichiometric LiNbO3 crystals doped with optical damage resistant ions

Kovács, L., Szaller, Z., Lengyel, K. & Corradi, G., Jan 1 2014, In : Optical Materials. 37, C, p. 55-58 4 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

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

Acconcia, T. V., Agócs, A. G., Barile, F., Barnaföldi, G. 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: Contribution to journalArticle

4 Citations (Scopus)
2013

Extended Defects in Semiconductors

Stanek, C., Nikl, M., Greulich-Weber, S. & Kovács, L., Feb 1 2013, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 10, 2, p. 150-152 3 p.

Research output: Contribution to journalEditorial

Photorefractive damage resistance threshold in stoichiometric LiNbO 3: Zr crystals

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

Research output: Contribution to journalArticle

17 Citations (Scopus)

Preparation and study of Li6Y(BO3)3 and Li6Gd(BO3)3 double borates

Tichy-Rács, E., Péter, A., Horváth, V., Polgár, K., Lengyel, K. & Kovács, L., Jan 1 2013, Materials Science, Testing and Informatics VI. p. 493-496 4 p. (Materials Science Forum; vol. 729).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

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

Agócs, A. G., Barile, F., Barnaföldi, G. 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., Kovacs, 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: Contribution to journalArticle

2 Citations (Scopus)

The role of alkali additives in the crystallization of Ferroelectric potassium lithium niobate crystals

Péter, Á., Hajdara, I., Szaller, Z., Lengyel, K. & Kovács, L., May 15 2013, In : Journal of Crystal Growth. 371, p. 102-106 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2012

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., May 13 2012, In : Analytica Chimica Acta. 726, p. 1-8 8 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

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

Hajdara, I., Lengyel, K., Kovács, L., Péter, Á. & Szaller, Z. S., Aug 13 2012, In : Ferroelectrics. 428, 1, p. 57-63 7 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Optical spectroscopy of multiferroic rare-earth manganites

Kovács, L., Lengyel, K. & Gospodinov, M., Aug 13 2012, In : Ferroelectrics. 428, 1, p. 82-86 5 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

VHMPID: A new detector for the ALICE experiment at LHC

Agócs, A. G., Alfaro, R., Barnaföldi, G. G., Bellwied, R., Bencze, G., Berényi, D., Boldizsár, L., Cuautle, E., De Cataldo, G., Di Bari, D., Di Mauro, A., Dominguez, I., Futó, E., Garcí A, E., Hamar, G., Harris, J., Harton, A., Kovács, L., Lévai, P., Lipusz, C. & 26 others, Markert, C., Martinengo, P., Martinez, M. I., Mastromarco, M., Mayani, D., Molnár, L., Nappi, E., Ortiz, A., Paić, G., Pastore, C., Patino, M. E., Perini, D., Perrino, D., Peskov, V., Pinsky, L., Piuz, F., Pochybová, S., Smirnov, N., Song, J., Timmins, A., Varga, D., Vargas, A., Vergara, S., Volpe, G., Yi, J. & Yoo, I. K., Dec 1 2012, In : EPJ Web of Conferences. 13, 03004.

Research output: Contribution to journalConference article

Open Access
2011

Antiferromagnetic ordering in RMnO3 rare-earth manganites observed by optical spectroscopy

Kovács, L., Lengyel, K. & Gospodinov, M., Dec 1 2011, In : Materials Research Bulletin. 46, 12, p. 2567-2569 3 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Combination transitions due to stretching and librations of OH? ions in LiNbO3

Kovács, L., Lengyel, K. & Szalay, V., Sep 15 2011, In : Optics Letters. 36, 18, p. 3714-3716 3 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

6 Citations (Scopus)
2010

Thermal kinetics of OH- ions in LiNbO3:Mg crystals above the photorefractive threshold

Lengyel, K., Kovács, L., Ṕter, Á., Polgár, K., Corradi, G., Baraldi, A. & Capelletti, R., Jun 7 2010, In : Applied Physics Letters. 96, 19, 191907.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2009

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

Kovács, L., Mazzera, M., Beregi, E. & Capelletti, R., Feb 1 2009, In : Applied Physics B: Lasers and Optics. 94, 2, p. 273-277 5 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2008

Characterization of potassium lithium niobate (KLN) ceramic system

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

Research output: Contribution to journalArticle

9 Citations (Scopus)

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

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

Research output: Contribution to journalConference article

1 Citation (Scopus)

Microscopic and raman spectroscopic investigation of the domain structures in LiNbO3:Y:Mg crystals

Lengyel, K., Szaller, Z., Peter, A., Polgar, K. & Kovacs, L., Dec 1 2008, In : Ferroelectrics. 368, 1 PART 2, p. 3-11 9 p.

Research output: Contribution to journalConference article

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: Contribution to journalArticle

9 Citations (Scopus)
2007

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: Contribution to journalArticle

39 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., Dec 1 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 1201-1204 4 p.

Research output: Contribution to journalConference article

4 Citations (Scopus)

Determination of the crystal composition from the OH- vibrational spectrum in lithium niobate

Dravecz, G. & Kovács, L., Jul 1 2007, In : Applied Physics B: Lasers and Optics. 88, 2, p. 305-307 3 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)

Hydroxil ions in scheelite type molybdates and tungstates

Kovács, L., Péter, Á., Ivleva, L. I., Baraldi, A. & Capelletti, R., Dec 1 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 856-859 4 p.

Research output: Contribution to journalConference article

3 Citations (Scopus)

Raman and infrared spectroscopic characterization of LiNbO3 crystals grown from alkali metal oxide solvents

Dravecz, G., Kovács, L., Péter, Á., Polgár, K. & Bourson, P., Dec 1 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 1313-1316 4 p.

Research output: Contribution to journalConference article

8 Citations (Scopus)

Spectroscopic methods for the determination of the composition of potassium lithium niobate crystals

Hajdara, I., Lengyel, K., Dravecz, G., Kovács, L., Péter, Á. & Szaller, Z., Dec 1 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 1321-1324 4 p.

Research output: Contribution to journalConference article

4 Citations (Scopus)

The effect of Mg doping on the Raman spectra of LiNbO3 crystals

Lengyel, K., Kovàcs, L., Pèter, À., Polgàr, K., Corradi, G. & Bourson, P., Dec 1 2007, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 4, 3, p. 847-850 4 p.

Research output: Contribution to journalConference article

10 Citations (Scopus)

The effect of stoichiometry and Mg doping on the Raman spectra of LiNbO3:Mg crystals

Lengyel, K., Kovács, L., Péter, Á., Polgár, K. & Corradi, G., Apr 1 2007, In : Applied Physics B: Lasers and Optics. 87, 2, p. 317-322 6 p.

Research output: Contribution to journalArticle

23 Citations (Scopus)
2006

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

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

Research output: Contribution to journalArticle

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: Contribution to journalArticle

7 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., Oct 25 2006, In : Physical Review B - Condensed Matter and Materials Physics. 74, 14, 144104.

Research output: Contribution to journalArticle

29 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., Kovacs, L., Veleva, M., Gospodinov, M., Güttler, B., Stosch, R. & Bismayer, U., Aug 9 2006, In : Journal of Physics Condensed Matter. 18, 31, p. L385-L393 L01.

Research output: Contribution to journalArticle

20 Citations (Scopus)
2005

A new potential for lithium niobate and its application in the calculation of structure and defect properties

Jackson, R. A., Valerio, M. E. G., Lengyel, K. & Kovács, L., Dec 1 2005, 2005 12th International Symposium on Electrets, ISE 12 - Proceedings. p. 469-471 3 p. 1612426. (Proceedings - International Symposium on Electrets; vol. 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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

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

Research output: Contribution to journalArticle

7 Citations (Scopus)