Abstract

We constructed a fiber-based, hybrid terahertz (THz) spectrometer having two working modes, asynchronous- optical-sampling THz time-domain spectroscopy (AOS-THz-TDS) and multiple-frequency-heterodyning THz comb spectroscopy (MFH-THz-CS), by use of dual fiber-laser-based frequency combs. A spectral range of 2THz and dynamic range of 100 was achieved at the single sweep measurement of 200ms in the AOS-THz-TDS mode, whereas the detailed structure of the THz frequency comb was clearly observed in the MFH-THz-CS mode. The spectrometer features compactness, robustness, flexibility, and cost effectiveness, in addition to high spectral resolution in rapid data acquisition, and has the potential to become a powerful tool for practical applications.

© 2010 Optical Society of America

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  1. T. Yasui, E. Saneyoshi, and T. Araki, Appl. Phys. Lett. 87, 061101 (2005).
    [CrossRef]
  2. A. Bartels, A. Thoma, C. Janke, T. Dekorsy, A. Dreyhaupt, S. Winnerl, and M. Helm, Opt. Express 14, 430–437 (2006).
    [CrossRef] [PubMed]
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    [CrossRef]
  4. H. Inaba, Y. Daimon, F.-L. Hong, A. Onae, K. Minoshima, T. R. Schibli, H. Matsumoto, M. Hirano, T. Okuno, M. Onishi, and M. Nakazawa, Opt. Express 14, 5223 (2006).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]

2008

2006

2005

T. Yasui, E. Saneyoshi, and T. Araki, Appl. Phys. Lett. 87, 061101 (2005).
[CrossRef]

Araki, T.

T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, Appl. Phys. Lett. 88, 241104 (2006).
[CrossRef]

T. Yasui, E. Saneyoshi, and T. Araki, Appl. Phys. Lett. 87, 061101 (2005).
[CrossRef]

Bartels, A.

Böttcher, J.

Daimon, Y.

Dekorsy, T.

Dreyhaupt, A.

Helm, M.

Hirano, M.

Hong, F.-L.

Inaba, H.

Janke, C.

Kabetani, Y.

T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, Appl. Phys. Lett. 88, 241104 (2006).
[CrossRef]

Kanamori, S.

Kasai, S.

Kawase, K.

Künzel, H.

Matsumoto, H.

Minoshima, K.

Nakazawa, M.

Nishizawa, N.

Ohtake, H.

Okuno, T.

Onae, A.

Onishi, M.

Ouchi, T.

Roehle, H.

Saneyoshi, E.

T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, Appl. Phys. Lett. 88, 241104 (2006).
[CrossRef]

T. Yasui, E. Saneyoshi, and T. Araki, Appl. Phys. Lett. 87, 061101 (2005).
[CrossRef]

Sartorius, B.

Schell, M.

Schibli, T. R.

Schlak, M.

Stanze, D.

Suizu, K.

Takayanagi, J.

Thoma, A.

Uchida, H.

Venghaus, H.

Winnerl, S.

Yamashita, M.

Yasui, T.

T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, Appl. Phys. Lett. 88, 241104 (2006).
[CrossRef]

T. Yasui, E. Saneyoshi, and T. Araki, Appl. Phys. Lett. 87, 061101 (2005).
[CrossRef]

Yokoyama, S.

T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, Appl. Phys. Lett. 88, 241104 (2006).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Experimental setup. SHG, second-harmonic-generation crystal; L, lenses; PCA1 and PCA2, dipole-shaped LTG-GaAs photoconductive antennas; Si-L, hemispherical silicon lenses; THz-L, THz lenses; AMP, current preamplifier.

Fig. 2
Fig. 2

(a) Temporal waveform and (b) power spectrum of the pulsed THz radiation measured at the single sweep measurement in AOS-THz-TDS mode (acquisition time 200 ms ).

Fig. 3
Fig. 3

Comparison of power spectrum measured in (a) MFH-THz-CS mode (sweep time 100 s ) and (b) AOS-THz-TDS mode (acquisition time 100 s ).

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