Spintronic Terahertz Emitters with integrated metallic terahertz cavities
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10254369" target="_blank" >RIV/61989100:27360/24:10254369 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/24:10254369 RIV/61989100:27740/24:10254369
Result on the web
<a href="https://www.degruyter.com/document/doi/10.1515/nanoph-2023-0807/html" target="_blank" >https://www.degruyter.com/document/doi/10.1515/nanoph-2023-0807/html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/nanoph-2023-0807" target="_blank" >10.1515/nanoph-2023-0807</a>
Alternative languages
Result language
angličtina
Original language name
Spintronic Terahertz Emitters with integrated metallic terahertz cavities
Original language description
Spintronic terahertz emitters (STEs), basedon optical excitation of nanometer thick ferromagnetic/heavy metal (FM/HM) heterojunctions, have becomeimportant sources for the generation of terahertz(THz) pulses. However, the efficiency of the opticalto-THz conversion remains limited. Although opticaltechniques have been developed to enhance the opticalabsorption, no investigations have studied the applicationof THz cavities. Here, to enhance the THzefficiency of STEs in a selected THz spectral range,FM/HM structures are realised on ultra-thin sapphirelayers with metallic mirrors to create ????/4 THz resonantcavities. THz emission time domain spectroscopyof these STE/Sapphire/Mirror heterostructures, withsapphire thicknesses ranging from 110 μm to 25 μm,shows enhancement of the emitted THz field that fitsthe ????/4 cavity resonance with up to a doubling of thefield in the spectrum, and in agreement with temporalsimulations of the emitted THz pulse. By taking advantage of birefringent materials, we further showthe potential of control of the polarisation state of theemitted THz pulse. This work shows the potential ofenhancing and engineering THz emission from STEsusing THz cavities that can be controlled over a broadspectral range, and which can be easily combined withoptical cavities.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanophotonics
ISSN
2192-8606
e-ISSN
2192-8614
Volume of the periodical
13
Issue of the periodical within the volume
10
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
"1899 "- 1907
UT code for WoS article
001178542000001
EID of the result in the Scopus database
2-s2.0-85187112995