Abstract

The exact power output of a table-top-sized terahertz (THz)-wave source using a nonlinear optical process has not been clarified because detectors for these experiments [Si bolometer, deuterated triglycine sulfate (DTGS), etc.] are not calibrated well. On the other hand, powermeters for the mid-infrared (mid-IR) region are well established and calibrated. We constructed a high-power dual-wavelength optical parametric oscillator with two KTP crystals as a light source for difference frequency generation. The obtained powers of dual waves were 21mJ at 1300nm, ten times higher than that of the previous measurement. The device provides high-power THz-wave generation with 100 times greater output power than that reported in previous works. A well-calibrated mid-IR powermeter at 27THz detected the generated THz wave; its measured energy was 2.4μJ. Although the powermeter had no sensitivity in the lower-frequency range (below 20THz), the pulse energy at such a low-frequency region was estimated in reference to the output spectrum obtained using a DTGS detector: the energy would be from about the submicrojoule level to a few microjoules in the THz-wave region.

© 2007 Optical Society of America

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2007 (2)

Y. Takahashi, K. Sugiyama, S. Brahadeeswaran, S. Onzuka, T. Kamimura, M. Yoshimura, Y. Mori, K. Yoshida, and T. Sasaki, Jpn. J. Appl. Phys. Part 1 46, 318 (2007).
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[CrossRef] [PubMed]

2006 (1)

K. Suizu, A. Nawahara, T. Yamashita, and H. Ito, Proc. SPIE 6103, 61030A (2006).
[CrossRef]

2005 (1)

2004 (1)

T. Taniuchi, S. Okada, and H. Nakanishi, J. Appl. Phys. 95, 5984 (2004).
[CrossRef]

2003 (1)

T. Tanabe, K. Suto, J. Nishizawa, K. Saito, and T. Kimura, Appl. Phys. Lett. 83, 237 (2003).
[CrossRef]

2002 (1)

2000 (2)

1999 (1)

1996 (1)

K. Kawase, M. Sato, T. Taniuchi, and H. Ito, Appl. Phys. Lett. 68, 2483 (1996).
[CrossRef]

1994 (1)

A. Rice, Y. Jin, X. F. Ma, X. C. Zhang, D. Bliss, J. Larkin, and M. Alexander, Appl. Phys. Lett. 64, 1324 (1994).
[CrossRef]

1972 (1)

G. D. Boyd, T. J. Bridges, C. K. N. Patel, and E. Buehler, Appl. Phys. Lett. 21, 553 (1972).
[CrossRef]

Appl. Phys. Lett. (4)

K. Kawase, M. Sato, T. Taniuchi, and H. Ito, Appl. Phys. Lett. 68, 2483 (1996).
[CrossRef]

A. Rice, Y. Jin, X. F. Ma, X. C. Zhang, D. Bliss, J. Larkin, and M. Alexander, Appl. Phys. Lett. 64, 1324 (1994).
[CrossRef]

G. D. Boyd, T. J. Bridges, C. K. N. Patel, and E. Buehler, Appl. Phys. Lett. 21, 553 (1972).
[CrossRef]

T. Tanabe, K. Suto, J. Nishizawa, K. Saito, and T. Kimura, Appl. Phys. Lett. 83, 237 (2003).
[CrossRef]

Electron. Lett. (1)

T. Taniuchi, J. Shikata, and H. Ito, Electron. Lett. 36, 1414 (2000).
[CrossRef]

J. Appl. Phys. (1)

T. Taniuchi, S. Okada, and H. Nakanishi, J. Appl. Phys. 95, 5984 (2004).
[CrossRef]

Jpn. J. Appl. Phys. Part 1 (1)

Y. Takahashi, K. Sugiyama, S. Brahadeeswaran, S. Onzuka, T. Kamimura, M. Yoshimura, Y. Mori, K. Yoshida, and T. Sasaki, Jpn. J. Appl. Phys. Part 1 46, 318 (2007).
[CrossRef]

Opt. Express (1)

Opt. Lett. (4)

Proc. SPIE (1)

K. Suizu, A. Nawahara, T. Yamashita, and H. Ito, Proc. SPIE 6103, 61030A (2006).
[CrossRef]

Other (2)

H. Ito, K. Suizu, T. Yamashita, A. Nawahara, and T. Sato, Jpn. J. Appl. Phys. Part 1 (to be published).

H. Nakanishi, H. Matsuda, S. Okada, and M. Kato, in Proceedings of the Material Research Society International Meeting on Advanced Materials (Material Research Society, 1989), Vol. 1, p. 97.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup for high-power THz-wave generation using a DAST crystal.

Fig. 2
Fig. 2

Input–output property of high-power dual-wavelength KTP-OPO. Open circles and open triangles, respectively, signify data obtained in this Letter and a previous work.

Fig. 3
Fig. 3

THz-wave output spectra measured using a DTGS detector. The solid curve and dashed curve, respectively, depict data obtained in this Letter and a previous work.

Fig. 4
Fig. 4

THz-wave output spectra measured using a well-calibrated mid-IR powermeter.

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