@inproceedings{52b67cf723e94b299ee1ae5bea530a3f,
title = "Frequency-comb-based fast and precise continuous-wave terahertz spectroscopy for non-destructive testing",
abstract = "This study presents an advanced continuous-wave terahertz spectroscopy referenced to a frequency comb to enhance the reliability of non-destructive testing. Through heterodyne photomixing of fixed and swept lasers in a near-infrared regime, we generate a frequency-sweeping terahertz signal (0.1–2.5 THz) with >10 THz/s sweep rate. The frequency comb ensures precise spectral definition, with frequency instabilities tens of MHz at a single sweep, which can be further reduced by increasing averaging times. This precision allows accurate measurement of the physical properties and geometry of tested objects, benefiting the semiconductor and battery industries by improving product quality.",
keywords = "CW Terahertz, Frequency standards, Non-destructive testing, Optical Frequency Comb, Spectroscopy",
author = "Guseon Kang and Jaeyoon Kim and Shin, \{Dong Chel\} and Joohyung Lee and Kim, \{Seung Woo\} and Kim, \{Young Jin\}",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVIII 2025 ; Conference date: 27-01-2025 Through 30-01-2025",
year = "2025",
doi = "10.1117/12.3041056",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Sadwick, \{Laurence P.\} and Tianxin Yang",
booktitle = "Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVIII",
}