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High-Speed High-Resolution Terahertz Time-Domain Spectrometer

Kim, Youngchan, Kim, Ki-Bok, Yee, Dae-Su, Yi, Min-Woo and Ahn, Jae-Wook (2008) High-Speed High-Resolution Terahertz Time-Domain Spectrometer Korean Journal of Optics and Photonics, 19 (5). pp. 370-375.

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High-speed high-resolution terahertz time-domain spectroscopy (THz-TDS) is demonstrated using the asynchronous-opticalsampling (AOS) method. A time-domain signal with a 10-ns time window is rapidly acquired by using two femtosecond lasers with slightly different repetition frequencies to generate and detect a terahertz pulse wave, without a mechanical delay stage. The spectrum obtained by the fast Fourier transformation (FFT) of the time-domain waveform has a frequency resolution of 100 MHz. The time resolution of our spectrometer is measured using the cross-correlation method to be 278 fs. A transmission spectrum of water vapor is measured and the absorption lines are analyzed in the frequency range from 0.1 to 1.2 THz.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :
Kim, Ki-Bok
Yee, Dae-Su
Yi, Min-Woo
Ahn, Jae-Wook
Date : 25 October 2008
DOI : 10.3807/HKH.2008.19.5.370
Depositing User : James Marshall
Date Deposited : 30 Jun 2020 09:35
Last Modified : 30 Jun 2020 09:35

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