Jpn. J. Appl. Phys. 44 (2005) pp. L288-L291  |Previous Article| |Next Article|  |Table of Contents|
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1-kHz Real-Time Imaging Using a Half-Cycle Terahertz Electromagnetic Pulse

Rakchanok Rungsawang, Aya Mochiduki, Shin-ichi Ookuma and Toshiaki Hattori

Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8573, Japan

(Received November 8, 2004; accepted December 27, 2004; published February 10, 2005)

Real-time high-speed terahertz (THz) two-dimensional imaging at a frame rate as high as 1 kHz was performed using intense half-cycle THz electromagnetic pulses. The THz source was a 3-cm-gap photoconductive antenna. The distribution of THz electric field was detected by a single optical probe pulse using a high-speed charge–coupled device camera by adopting a phase-sensitive electrooptic detection method. Using the system, we demonstrated imaging of a moving metal object by observing the transmitted beam. The time delay of optical pulses was fixed to probe the THz pulse at the time when the axial THz waveform has the steepest transient, which yields a good image quality. This research opens the window of high-speed imaging in the THz frequency regime.

DOI: 10.1143/JJAP.44.L288
KEYWORDS:half-cycle electromagnetic pulse, large-aperture photoconductive antenna, terahertz imaging, single-shot imaging, phase-sensitive electrooptic detection

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References | Citing Articles (5)

  1. D. Grischkowsky, S. Keiding, M. van Exter and Ch. Fattinger: J. Opt. Soc. Am. B 7 (1990) 2006.
  2. M. Walther, B. Fischer, M. Schall, H. Helm and P. U. Jepsen: Chem. Phys. Lett. 332 (2000) 389[CrossRef].
  3. K. Okumura and Y. Tanimura: Chem. Phys. Lett. 295 (1998) 298[CrossRef].
  4. E. Pickwell, B. E. Cole, A. J. Fitzgerald, M. Pepper and V. P. Wallace: Phys. Med. Biol. 49 (2004) 1595.
  5. Q. Wu, T. D. Hewitt and X.-C. Zhang: Appl. Phys. Lett. 69 (1996) 1026[AIP Scitation].
  6. Z. Jiang and X.-C. Zhang: Opt. Express 5 (1999) 243.
  7. M. Usami, T. Iwamoto, R. Fukusawa, M. Tani, M. Watanabe and K. Sakai: Phys. Med. Biol. 47 (2002) 3749.
  8. F. Miyamaru, T. Yonera, M. Tani and M. Hangyo: Jpn. J. Appl. Phys. 43 (2004) L489[JSAP].
  9. G. L. Eesley, M. D. Levenson and M. W. Tolles: IEEE J. Quantum Electron. 14 (1978) 45[CrossRef].
  10. Z. Jiang, F. G. Sun, Q. Chen and X.-C. Zhang: Appl. Phys. Lett. 74 (1999) 1191[AIP Scitation].
  11. T. Hattori, K. Ohta, R. Rungsawang and K. Tukamoto: J. Phys. D 37 (2004) 770[IoP STACKS].
  12. R. Rungsawang, K. Tukamoto and T. Hattori: to be published in Jpn. J. Appl. Phys.
  13. P. Sang-Gyu, A. M. Weiner, M. R. Melloch, C. W. Siders, J. L. W. Siders and A. J. Taylor: IEEE J. Quantum Electron. 35 (1999) 1257[CrossRef].
  14. T. Hattori, R. Rungsawang, K. Ohta and K. Tukamoto: Jpn. J. Appl. Phys. 41 (2002) 5198[JSAP].
  15. R. Rungsawang, K. Ohta, K. Tukamoto and T. Hattori: J. Phys. D 36 (2003) 229[IoP STACKS].

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