Magnetization-controlled terahertz harmonic generation with grating and cavity structures

Hatice Nur Koyun; Ruslan Salikhov; Ciaran Fowley; Steffen Kober; Nupur Sontakkey; Igor Ilyakov; Thales V.A.G. de Oliveira; Jan-Christoph Deinert; Aleksandra Lindner; Artur Erbe; Jürgen Faßbender; Manfred Helm; Jürgen Lindner; Stephan Winnerl; Klaas-Jan Tielrooij; Ryszard Narkowicz; Sergey Kovalev

doi:10.1063/5.0248907

Magnetization-controlled terahertz harmonic generation with grating and cavity structures

Hatice Nur Koyun
, Ruslan Salikhov (Corresponding author)
, Ciaran Fowley
, Steffen Kober
, Nupur Sontakkey
, Igor Ilyakov
, Thales V.A.G. de Oliveira
, Jan-Christoph Deinert
, Aleksandra Lindner
, Artur Erbe
, Jürgen Faßbender
, Manfred Helm
, Jürgen Lindner
, Stephan Winnerl
, Klaas-Jan Tielrooij
, Ryszard Narkowicz
, Sergey Kovalev (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Spintronic terahertz (THz) frequency conversion in ferromagnet/heavy metal (FM/HM) heterostructures has the potential to enhance high-speed data communication and advance ultrafast magnetic memory applications. By leveraging ultrafast spin currents and spin-orbit interactions in FM/HM systems, broadband THz generation can be achieved, with recent studies demonstrating spintronic THz second harmonic generation (TSHG) and optical rectification. We introduce concepts for controlling the frequency conversion and temporal characteristics of TSHG through active manipulation of FM magnetization, providing flexibility in second harmonic emission and waveform shaping. The TSHG valve is realized by employing THz metamaterials, consisting of hybrid FM/HM structures combined with subwavelength gold periodic arrays. Additionally, using microstructured gold periodic arrays, we investigate the TSHG field enhancement capability as a function of grating filling factor and explore the potential for TSHG cavity enhancement.

Originele taal-2	Engels
Artikelnummer	143907
Aantal pagina's	12
Tijdschrift	Journal of Applied Physics
Volume	138
Nummer van het tijdschrift	14
DOI's	https://doi.org/10.1063/5.0248907
Status	Gepubliceerd - 14 okt. 2025

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© 2025 Author(s).

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10.1063/5.0248907

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Koyun, H. N., Salikhov, R., Fowley, C., Kober, S., Sontakkey, N., Ilyakov, I., de Oliveira, T. V. A. G., Deinert, J.-C., Lindner, A., Erbe, A., Faßbender, J., Helm, M., Lindner, J., Winnerl, S., Tielrooij, K.-J., Narkowicz, R., & Kovalev, S. (2025). Magnetization-controlled terahertz harmonic generation with grating and cavity structures. Journal of Applied Physics, 138(14), Artikel 143907. https://doi.org/10.1063/5.0248907

@article{7e377f2dd59440c09f32f1f046fd6cb0,

title = "Magnetization-controlled terahertz harmonic generation with grating and cavity structures",

abstract = "Spintronic terahertz (THz) frequency conversion in ferromagnet/heavy metal (FM/HM) heterostructures has the potential to enhance high-speed data communication and advance ultrafast magnetic memory applications. By leveraging ultrafast spin currents and spin-orbit interactions in FM/HM systems, broadband THz generation can be achieved, with recent studies demonstrating spintronic THz second harmonic generation (TSHG) and optical rectification. We introduce concepts for controlling the frequency conversion and temporal characteristics of TSHG through active manipulation of FM magnetization, providing flexibility in second harmonic emission and waveform shaping. The TSHG valve is realized by employing THz metamaterials, consisting of hybrid FM/HM structures combined with subwavelength gold periodic arrays. Additionally, using microstructured gold periodic arrays, we investigate the TSHG field enhancement capability as a function of grating filling factor and explore the potential for TSHG cavity enhancement.",

author = "Koyun, \{Hatice Nur\} and Ruslan Salikhov and Ciaran Fowley and Steffen Kober and Nupur Sontakkey and Igor Ilyakov and \{de Oliveira\}, \{Thales V.A.G.\} and Jan-Christoph Deinert and Aleksandra Lindner and Artur Erbe and J{\"u}rgen Fa{\ss}bender and Manfred Helm and J{\"u}rgen Lindner and Stephan Winnerl and Klaas-Jan Tielrooij and Ryszard Narkowicz and Sergey Kovalev",

note = "Publisher Copyright: {\textcopyright} 2025 Author(s).",

year = "2025",

month = oct,

day = "14",

doi = "10.1063/5.0248907",

language = "English",

volume = "138",

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Koyun, HN, Salikhov, R, Fowley, C, Kober, S, Sontakkey, N, Ilyakov, I, de Oliveira, TVAG, Deinert, J-C, Lindner, A, Erbe, A, Faßbender, J, Helm, M, Lindner, J, Winnerl, S, Tielrooij, K-J, Narkowicz, R & Kovalev, S 2025, 'Magnetization-controlled terahertz harmonic generation with grating and cavity structures', Journal of Applied Physics, vol. 138, nr. 14, 143907. https://doi.org/10.1063/5.0248907

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T1 - Magnetization-controlled terahertz harmonic generation with grating and cavity structures

AU - Koyun, Hatice Nur

AU - Salikhov, Ruslan

AU - Fowley, Ciaran

AU - Kober, Steffen

AU - Sontakkey, Nupur

AU - Ilyakov, Igor

AU - de Oliveira, Thales V.A.G.

AU - Deinert, Jan-Christoph

AU - Lindner, Aleksandra

AU - Erbe, Artur

AU - Faßbender, Jürgen

AU - Helm, Manfred

AU - Lindner, Jürgen

AU - Winnerl, Stephan

AU - Tielrooij, Klaas-Jan

AU - Narkowicz, Ryszard

AU - Kovalev, Sergey

PY - 2025/10/14

Y1 - 2025/10/14

N2 - Spintronic terahertz (THz) frequency conversion in ferromagnet/heavy metal (FM/HM) heterostructures has the potential to enhance high-speed data communication and advance ultrafast magnetic memory applications. By leveraging ultrafast spin currents and spin-orbit interactions in FM/HM systems, broadband THz generation can be achieved, with recent studies demonstrating spintronic THz second harmonic generation (TSHG) and optical rectification. We introduce concepts for controlling the frequency conversion and temporal characteristics of TSHG through active manipulation of FM magnetization, providing flexibility in second harmonic emission and waveform shaping. The TSHG valve is realized by employing THz metamaterials, consisting of hybrid FM/HM structures combined with subwavelength gold periodic arrays. Additionally, using microstructured gold periodic arrays, we investigate the TSHG field enhancement capability as a function of grating filling factor and explore the potential for TSHG cavity enhancement.

AB - Spintronic terahertz (THz) frequency conversion in ferromagnet/heavy metal (FM/HM) heterostructures has the potential to enhance high-speed data communication and advance ultrafast magnetic memory applications. By leveraging ultrafast spin currents and spin-orbit interactions in FM/HM systems, broadband THz generation can be achieved, with recent studies demonstrating spintronic THz second harmonic generation (TSHG) and optical rectification. We introduce concepts for controlling the frequency conversion and temporal characteristics of TSHG through active manipulation of FM magnetization, providing flexibility in second harmonic emission and waveform shaping. The TSHG valve is realized by employing THz metamaterials, consisting of hybrid FM/HM structures combined with subwavelength gold periodic arrays. Additionally, using microstructured gold periodic arrays, we investigate the TSHG field enhancement capability as a function of grating filling factor and explore the potential for TSHG cavity enhancement.

UR - https://www.scopus.com/pages/publications/105018612764

U2 - 10.1063/5.0248907

DO - 10.1063/5.0248907

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SN - 0021-8979

VL - 138

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 14

M1 - 143907

ER -

Magnetization-controlled terahertz harmonic generation with grating and cavity structures

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