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A Szentágothai János Kutatóközpont a PTE korszerű, nemzetközi tudományszervezési és menedzsment normák szerint kialakított új intézménye, amely az élettudományi, élettelen természettudományi, valamint környezettudományi oktatás...

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High-field Terahertz Research Group

  • Research concept
  • Members
  • Publications
  • R and D results
  • Services
  • Laboratories, instruments
  • Galéria

Generation and application of terahertz (THz) pulses with high pulse energy, and with extremely high electric field strength that is sufficient for nonlinear THz spectroscopy applications. Searching for new application possibilities in the fields of material-, medical-, and life sciences.

Manipulation, acceleration, focusing and temporal shaping of electrically charged particle bunches (electrons, protons, ions) with THz pulses having extremely large electric field strength. Elaboration of the theory of a possible table-top proton accelerator making possible the use of protons having low energy for hadron therapy applications. Generation of single cycle UV and X-ray radiation with Thomson scattering.

In the frame of ELI (Extreme Light Infrastructure) generation of attosecond light pulses with the method of THz assisted high harmonic generation.

Our results as far as here: Presentation of optimal parameters for design of tilted pulse-front based THz generator scheme. It was shown that in case of using longer wavelength than the typical 800 nm in a tilted pulse-front excitation scheme semiconductors (like ZnTe, GaP) are competitive with LiNbO3 from the point of view of efficiency. It was shown, that in case of LiNbO3 the peak THz electric field strength can be increased by more than one order of magnitude using ~500 fs pump pulse length, and cryogenic temperature. With this technique it is possible to generate single cycle THz pulses with pulse energy exceeding 10 mJ, and with peak electric field strength of 100 MV/cm with central frequency about 1 THz.



Dr. Gábor Almási
professor
almasi@fizika.ttk.pte.hu
+36 72 501500 /24490
Dr. Gyula Polónyi
research fellow
polonyi@fizika.ttk.pte.hu
24188
Dr. György Tóth
assistant professor
tothgy@fizika.ttk.pte.hu
Imene Benabdelghani
PhD student
imeneben@gamma.ttk.pte.hu
Krizsán Gergő
PhD student
krizsan@fizika.ttk.pte.hu
Iroda: 29050 Labor: 29221
Luis Nasi
student
luis.nasi@yahoo.com
29221
Godana Zerihun Tadele
PhD student
Zerihunta@du.edu.et
Rizal Fauzul
research fellow
fauzulr@gamma.ttk.pte.hu

Publications of the last 3 years:

Numerical investigation of terahertz wave driven electron acceleration generated from gas jet

S Turnár, B Sarkadi, SW Jolly, J Hebling, Z Tibai

Applied Physics B 130 (2), 1-8, 2024

 

Possibility of CO2 laser-pumped multi-millijoule-level ultrafast pulse terahertz sources

G Tóth, G Illés, G Nazymbekov, N Mbithi, G Almási, J Hebling

Scientific Reports 14 (1), 999, 2024

 

Tilted pulse front pumping techniques for efficient terahertz pulse generation

G Tóth, G Polónyi, J Hebling

Light: Science & Applications 12 (1), 256, 2023

 

Subcycle surface electron emission driven by strong-field terahertz waveforms

S Li, A Sharma, Z Márton, PS Nugraha, C Lombosi, Z Ollmann, I Márton, ...

Nature Communications 14 (1), 6596, 2023

 

Focusing of Radially Polarized Electromagnetic Waves by a Parabolic Mirror

ZT Godana, J Hebling, L Pálfalvi

Photonics 10 (7), 848, 2023

 

Demonstration of an imaging-free terahertz generation setup using segmented tilted-pulse-front excitation

G Krizsán, G Polónyi, T Kroh, G Tóth, Z Tibai, NH Matlis, G Almási, ...

Optics Letters 48 (14), 3777-3780, 2023

Scalable microstructured semiconductor THz pulse sources

Z Tibai, G Krizsán, G Tóth, G Almási, G Illés, L Pálfalvi, J Hebling

Optics Express 30 (25), 45246-45258, 2022

Investigation of terahertz pulse generation in semiconductors pumped at long infrared wavelengths

NM Mbithi, G Tóth, Z Tibai, I Benabdelghani, L Nasi, G Krizsán, J Hebling, ...

JOSA B 39 (10), 2684-2691, 2022

Spatiotemporal modeling of direct acceleration with high-field terahertz pulses

Z Tibai, S Turnár, G Tóth, J Hebling, SW Jolly

Optics Express 30 (18), 32861-32870, 2022

Design of semiconductor contact grating terahertz source with enhanced diffraction efficiency

Z Tibai, NM Mbithi, G Almási, JA Fülöp, J Hebling

Crystals 12 (8), 1173, 2022

Waveguide structure based electron acceleration using terahertz pulses

S Turnár, G Krizsán, J Hebling, Z Tibai

Optics Express 30 (15), 27602-27608

Uniformly scalable lithium niobate THz pulse source in transmission geometry

G Krizsán, Z Tibai, G Tóth, PS Nugraha, G Almási, J Hebling, JA Fülöp

Optics Express 30 (3), 4434-4443, 2022

Performance comparison of lithium-niobate-based extremely high-field single-cycle terahertz sources

G Tóth, L Pálfalvi, S Turnár, Z Tibai, G Almási, J Hebling

Chinese Optics Letters 19 (11), 111902, 2021

Absorption of pulsed terahertz and optical radiation in earthworm tissue and its heating effect

MH Abufadda, NM Mbithi, G Polónyi, PS Nugraha, A Buzády, J Hebling, ...

Journal of Infrared, Millimeter, and Terahertz Waves, 1-13, 2021

Terahertz pulses induce segment renewal via cell proliferation and differentiation overriding the endogenous regeneration program of the earthworm Eisenia andrei

MH Abufadda, A Erdélyi, E Pollák, PS Nugraha, J Hebling, JA Fülöp, ...

Biomedical Optics Express 12 (4), 1947-1961, 2021

Design of a THz-driven compact relativistic electron source

S Turnár, J Hebling, JA Fülöp, G Tóth, G Almási, Z Tibai

Applied Physics B 127, 1-7, 2021

Részecskegyorsítás extrém nagy térerősségű terahertzes impulzusokkal

Z Tibai, S Turnár, B Kovács, L Pálfalvi, G Almási, J Hebling

FIZIKAI SZEMLE: MAGYAR FIZIKAI FOLYÓIRAT, 47-52

Programmable generation of terahertz bursts in chirped-pulse laser amplification

V Stummer, T Flöry, G Krizsán, G Polónyi, E Kaksis, A Pugžlys, J Hebling, ...

Optica 7 (12), 1758-1763, 2020

Lithium niobate and lithium tantalate based scalable terahertz pulse sources in reflection geometry

G o Krizsán, Z Tibai, J Hebling, L Pálfalvi, G Almási, G Tóth

Optics Express 28 (23), 34320-34327, 2020

Tilted‐Pulse‐Front Schemes for Terahertz Generation

L Wang, G Tóth, J Hebling, F Kärtner

Laser & Photonics Reviews 14 (7), 2000021, 2020

Measurement of four-photon absorption in GaP and ZnTe semiconductors

B Monoszlai, PS Nugraha, G Tóth, G Polónyi, L Pálfalvi, L Nasi, Z Ollmann, ...

Optics express 28 (8), 12352-12362, 2020

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

A Buzády, R Gálos, G Makkai, X Wu, G Tóth, L Kovács, G Almási, ...

Optical Materials Express 10 (4), 998-1006, 202

Granted         PatentNo_    Agency    Title
2022.10.18    11474414    USPTO    Reflection and/or diffraction-based method and setup to generate high-energy terahertz pulses
2021.10.06    3396447      EP    Method and setup to generate terahertz radiation
2021.03.01    231120        SZTNH    Eljárás és elrendezés EUV-VUV tartományba eső, néhány optikai ciklust tartalmazó koherens elektromágneses sugárzás keltésére
2020.08.18    10747086    USPTO    METHOD AND SETUP TO GENERATE TERAHERTZ RADIATION SCALABLE IN ENERGY
2020.06.10    3353600      EP    Method to generate terahertz radiation and terahertz radiation source
2020.05.28    231075        SZTNH    Eljárás terahertzes sugárzás keltésére, valamint terahertzes sugárforrás
2019.11.19    10481468    USPTO    METHOD TO GENERATE TERAHERTZ RADIATION AND TERAHERTZ RADIATION SOURCE
2019.07.23    10359687    USPTO    METHOD TO GENERATE TERAHERTZ RADIATION AND TERAHERTZ RADIATION SOURCE
2019.07.10    2556407      EP    Optical device for broadband nonlinear optical processes based on angular dispersion
2019.07.10    2619626      EP    Pulse excited thz waveguide source based on optical rectification
2017.12.27    2965391      EP    Method and arrangement to generate few optical cycle coherent electromagnetic radiation in the euv-vuv domain
2017.12.05    9837786      USPTO    SHORT PERIOD UNDULATOR
2017.08.16    2848099      EP    Method and setup to manipulate electrically charged particles
2017.02.28    230587        SZTNH    Rövid periódusú undulátor
2017.01.17    9548584      USPTO    Method and arrangement to generate few optical cycle coherent electromagnetic radiation in the EUV-VUV domain
2016.11.15    9497848      USPTO    METHOD AND SETUP TO MANIPULATE ELECTRICALLY CHARGED PARTICLES
2016.01.28    230314        SZTNH    Optikai eszköz szélessávú nemlineáris optikai folyamatokhoz
2015.12.28    230293        SZTNH    Összeállítás és eljárás elektromosan töltött részecskék manipulálására
2015.09.08    9128349      USPTO    PULSE EXCITED THZ WAVEGUIDE SOURCE BASED ON OPTICAL RECTIFICATION
2015.01.28    229943        SZTNH    Optikai egyenirányításon alapuló gerjesztésű THZ-es sugárforrás
                         NaN          WIPO (PCT)    Reflection- and/or diffraction-based method and setup to generate high-energy terahertz pulses
                         NaN          WIPO (PCT)    Efficient production of high-energy ultrashort ion- especially proton bunches
 

Scientific research, semiconductor industry, medicine industry, security-technique

  • Time Domain terahertz Spectroscopy (TDTS)
  • THz pump – probe measurements

 

Nagy intenzitású, különleges hullámhosszú ultrarövid impulzusú lézerek - Külső felhasználók részére szolgáló felhasználási szabályzat nyilvános elérhetősége

Application Form

  • Clean room environment and controllable temperature conditions is available, where a THz source with milliwatt average power operates presently.
  • Time Domain THz spectrometer with 3 THz bandwidth. Near infrared pulsed lasers, with characterized beam parameters.
  • Optical equipments and diagnostic instrumentation from the visible to the far infrared frequency range.

High-field terahertz research group

CONTACT
Dr. János Hebling
Research Group Leader
 36 72 503600