Abstract

We demonstrate high-speed terahertz (THz) time-domain spectroscopy based on electronically controlled optical sampling (ECOPS). The ECOPS system utilizes two synchronized Ti:sapphire femtosecond lasers with a 100MHz repetition frequency. The time delay between the two laser pulses is demonstrated to be rapidly swept at a scan rate of 1kHz on a time delay window of 77ps by using an external offset voltage applied to a locking electronics. It is shown that a THz pulse can be exactly measured by ECOPS, as is done by asynchronous optical sampling (ASOPS), and the measurement time is shortened by a factor of 50 by using ECOPS compared with ASOPS in the case of employing 100MHz repetition-rate lasers.

© 2010 Optical Society of America

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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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2010

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

S. Kray, F. Spöler, T. Hellerer, and H. Kurz, Opt. Express 18, 9976 (2010).
[CrossRef] [PubMed]

2009

2008

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

2007

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

2006

2005

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

Ahn, J.

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

Araki, T.

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

Bartels, A.

Cerna, R.

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

Dekorsy, T.

Dreyhaupt, A.

Gebs, R.

Hellerer, T.

Helm, M.

Hudert, F.

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

Janke, C.

Kim, Y.

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

Kistner, C.

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

Klatt, G.

Kray, S.

Kurz, H.

Lison, F.

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

Posthumus, J. H.

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

Rausch, C.

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

Saneyoshi, E.

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

Spöler, F.

Tauser, F.

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

Thoma, A.

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

A. Bartels, A. Thoma, C. Janke, T. Dekorsy, A. Dreyhaupt, S. Winnerl, and M. Helm, Opt. Express 14, 430 (2006).
[CrossRef] [PubMed]

Winnerl, S.

Yasui, T.

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

Yee, D. S.

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

Yi, M.

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

Appl. Phys. Lett.

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

J. Korean Phys. Soc.

Y. Kim, D. S. Yee, M. Yi, and J. Ahn, J. Korean Phys. Soc. 56, 255 (2010).
[CrossRef]

Opt. Express

Proc. SPIE

F. Tauser, C. Rausch, J. H. Posthumus, and F. Lison, Proc. SPIE 6881, 68810O (2008).
[CrossRef]

Rev. Sci. Instrum.

A. Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 035107 (2007).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup for ECOPS THz-TDS.

Fig. 2
Fig. 2

(a) Schematic diagram of the time delay measurement setup. (b) Signal (blue curve) measured from the time delay measurement setup and temporal variation of the time delay (red curve) determined from the signal by Eq. (1).

Fig. 3
Fig. 3

(a) Typical THz temporal waveforms measured by ECOPS and ASOPS and (b) their THz amplitude spectra. The black and red curves indicate ECOPS and ASOPS results, respectively. The ASOPS result is offset down for clarity in (a).

Fig. 4
Fig. 4

SNR versus measurement time for THz pulse measurements using ECOPS and ASOPS.

Equations (1)

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τ ( t ) = Δ ϕ ( t ) 2 π f = 1 2 π f cos 1 ( V ( t ) A 0 ) ,

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