Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Terahertz Transmission Through Patterened Vanadium Oxide Thin Films on Dielectric Substrates
Download
PHOTOPTICS_2017_92.pdf
Date
2017-03-01
Author
AKKAYA, MAHİNUR
Demirhan, Y.
Yuce, H.
Aygun, G.
Ozyuzer, L.
SABAH, CUMALİ
Altan, Hakan
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
270
views
143
downloads
Cite This
Patterned and unpatterned films of vanadium oxide grown on dielectric substrates such as fused silica and sapphire were grown and analysed by varying the temperature using terahertz time domain spectroscopy. After investigating the critical transition temperature near 340K, a well-known cross-shaped pattern was studied to observe any resonances upon transmission. Due to the poor conductivity of the films the frequency selective nature of the structure was not observed, however an etalon effect could be seen in the sapphire substrate as opposed to the fused silica substrate above the critical temperature. Dependence of the refractive index difference between substrates upon transmission of the THz pulse is likely in explaining this observed difference.
Subject Keywords
Terahertz (THz))
,
Time Domain Spectroscopy (TDS)
,
Vanadium Dioxide (VO2)
URI
https://hdl.handle.net/11511/34405
DOI
https://doi.org/10.5220/0006268703340339
Collections
Department of Physics, Conference / Seminar
Suggestions
OpenMETU
Core
Optical characterization of silicon based hydrogenated amorphous thin films by un-visible and infrared measurements
Kılıç, İlker; Katırcıoğlu, Bayram; Department of Physics (2006)
Various carbon content hydrogenated amorphous silicon carbide (a-Si1ŁxCx:H) and hydrogenated amorphous silicon (a-Si:H) thin films have been deposited on various substrates by using plasma enhanced chemical vapour deposition (PECVD) technique. Transmission spectra of these films have been determined within UV-Visible region and the obtained data were analysed to find related physical constants such as; refractive indices, thicknesses, etc. Fourier transform infrared (FT-IR) spectrometry technique has been u...
BIOLOGICAL APPLICATIONS OF TERAHERTZ TIME-DOMAIN ATTENUATED TOTAL REFLECTION SPECTROSCOPY
Gelgeç, Melis; Altan, Hakan; Department of Physics (2022-8-25)
In this thesis, a Terahertz Attenuated Total Reflection Time Domain Spectroscopy (THz ATR-TDS) system was constructed to measure biological media. The constructed system driven by a Yb:doped mode-locked fiber laser had a limited bandwidth of about 0.3 THz. This bandwidth limited the analysis of various samples in the frequency domain. To overcome this limitation a method was developed so that the samples can be analyzed in the time-domain. Oral soft tissue samples collected were used in order to demonstrate...
Anharmonic line shift and linewidth of the Raman modes in TlInS2 layered crystals
Yuksek, NS; Hasanlı, Nızamı; Aydinli, A (Wiley, 2004-01-01)
The temperature dependence of the unpolarized Raman spectra from TlInS2 layered crystal was measured between 10 and 300 K. The analysis of the experimental data showed that the temperature dependences of wavenumbers and linewidths are well described by considering the contributions from thermal expansion and lattice anharmonicity. The purely anharmonic contribution (phonon-phonon coupling) was found to be due to three-phonon processes. This work demonstrates that the two Raman modes at 280.9 and 292.3 cm(-1...
Exciton simulations of the optical properties of several photosynthetic light-harvesting complexes
İşeri, Erkut İnan; Gülen, Demet; Department of Physics (2004)
The work presented in this thesis was aimed to investigate the structure-function relationship of several photosynthetic Light-Harvesting Complexes (LHCs) including Chlorophyll Protein 29 (CP29) and Light-Harvesting Complex II (LHCII) of green plants, and Fenna-Matthews-Olson (FMO) complex of green sulfur bacterium Chlorobium tepidum. Based on the exciton calculations, a model was proposed to the electronic excited states (EES) of both CP29 and LHCII complexes by incorporating a considerable part of the cur...
Time Domain Terahertz Attenuated Total Internal Reflection Spectroscopy
Atalar, Ataberk; Altan, Hakan; Department of Physics (2021-7)
In this thesis, a Terahertz Time Domain Spectroscopy system based on the Attenuated Total Internal Reflection principle (THz ATR-TDS) was constructed in order to non-destructively evaluate materials which show high absorptive characteristics at THz frequencies and therefore prove other widely used THz transmission spectroscopy methods ineffective. The response of the system without a sample differs in amplitude and in time scale when compared to a sample measurement due to the real and imaginary parts of th...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. AKKAYA et al., “Terahertz Transmission Through Patterened Vanadium Oxide Thin Films on Dielectric Substrates,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34405.
