Thin-film characterization by terahertz time-domain spectroscopy using grating-assisted excitation of guided modes

2009 ◽  
Vol 94 (7) ◽  
pp. 071106 ◽  
Author(s):  
Y. Laamiri ◽  
F. Garet ◽  
J.-L. Coutaz
Keyword(s):  
Thin Film ◽  
Time Domain ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Guided Modes ◽  
Thin Film Characterization

Thin film characterization using terahertz differential time-domain spectroscopy and double modulation

2001 ◽  
Author(s):  
Samuel P. Mickan ◽  
Kwang-Su Lee ◽  
Toh-Ming Lu ◽  
Edward Barnat ◽  
Jesper Munch ◽  
...  
Keyword(s):  
Thin Film ◽  
Time Domain ◽  
Time Domain Spectroscopy ◽  
Thin Film Characterization ◽  
Double Modulation

A DIELECTRIC PROPERTY ANALYSIS OF FERROELECTRIC THIN FILM USING TERAHERTZ TIME-DOMAIN SPECTROSCOPY

2007 ◽  
Vol 95 (1) ◽  
pp. 83-91 ◽  
Author(s):  
HAN-CHEOL RYU ◽  
MIN-HWAN KWAK ◽  
SEUNG-BEOM KANG ◽  
SE-YOUNG JEONG ◽  
MUN-CHEOL PAEK ◽  
...  
Keyword(s):  
Thin Film ◽  
Dielectric Property ◽  
Time Domain ◽  
Ferroelectric Thin Film ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Property Analysis

scholarly journals Limitation in thin-film sensing with transmission-mode terahertz time-domain spectroscopy

2014 ◽  
Vol 22 (1) ◽  
pp. 972 ◽  
Author(s):  
Withawat Withayachumnankul ◽  
John F. O’Hara ◽  
Wei Cao ◽  
Ibraheem Al-Naib ◽  
Weili Zhang
Keyword(s):  
Thin Film ◽  
Time Domain ◽  
Transmission Mode ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy

Terahertz time-domain spectroscopy technique for characterizing GaN thin film

2006 ◽  
Author(s):  
Tsong-Ru Tsai ◽  
Shi-Jie Chen ◽  
Chih-Fu Chang ◽  
Tai-Yuan Lin ◽  
Cheng-Chung Chi
Keyword(s):  
Thin Film ◽  
Time Domain ◽  
Spectroscopy Technique ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy

scholarly journals Measuring Complex Refractive Indices of a Nanometer-Thick Superconducting Film Using Terahertz Time-Domain Spectroscopy with a 10 Femtoseconds Pulse Laser

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 651
Author(s):  
Hyoung-Taek Lee ◽  
Gang-Seon Ji ◽  
Jun-Yung Oh ◽  
Choong-Won Seo ◽  
Byeong-Won Kang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Pulse Laser ◽  
Optical Constant ◽  
Time Domain ◽  
Refractive Indices ◽  
Superconducting Thin Films ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy

Superconducting thin films are widely applied in various fields, including switching devices, because of their phase transition behaviors in relation to temperature changes. Therefore, it is important to quantitatively determine the optical constant of a superconducting material in the thin-film state. We performed a terahertz time-domain spectroscopy, based on a 10 femtoseconds pulse laser, to measure the optical constant of a superconducting GdBa2Cu3O7−x (GdBCO) thin film in the terahertz region. We then estimated the terahertz refractive indices of the 70 nm-thick GdBCO film using a numerical extraction process, even though the film thickness was approximately 1/10,000 times smaller than the terahertz wavelength range of 200 μm to 1 mm. The resulting refractive indices of the GdBCO thin film were consistent with the theoretical results using the two-fluid model. Our work will help to further understand the terahertz optical properties of superconducting thin films with thicknesses under 100 nm, as well as provide a standard platform for characterizing the optical properties of thin films without the need of Kramers–Kronig transformation at the terahertz frequencies.

Measurable lower limit of thin film conductivity with parallel plate waveguide terahertz time domain spectroscopy

2017 ◽  
Vol 42 (15) ◽  
pp. 3056 ◽  
Author(s):  
Manjakavahoaka Razanoelina ◽  
Shohei Ohashi ◽  
Iwao Kawayama ◽  
Hironaru Murakami ◽  
Annick F. Dégardin ◽  
...  
Keyword(s):  
Thin Film ◽  
Lower Limit ◽  
Time Domain ◽  
Parallel Plate ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Parallel Plate Waveguide ◽  
Film Conductivity
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