Abstract

Emission of terahertz (THz) radiation as a result of optical rectification of intense femtosecond laser pulses on thin gold films has been studied by time-domain THz spectroscopy. The THz amplitude was measured as a function of film thickness and incidence angle. The experiments reveal that the emitted THz field is suppressed for a thickness below 100nm, which gives evidence of the nonlocal character of the response. The variation of incidence angle allows us to estimate the components of susceptibility tensor χijk(2). For thicker films and near grazing incidence, the emitted THz field attains a peak value of 4kVcm.

© 2005 Optical Society of America

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References

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2005 (1)

F. Kadlec, Rev. Sci. Instrum. 76, 043101 (2005).
[CrossRef]

2004 (2)

2003 (1)

S. M. Dounce, M. Yang, and H.-L. Dai, Phys. Rev. B 67, 205410 (2003).
[CrossRef]

1999 (1)

J. F. McGilp, Surf. Rev. Lett. 6, 529 (1999).
[CrossRef]

1997 (1)

C. S. Chang and J. T. Lue, Surf. Sci. 393, 231 (1997).
[CrossRef]

1994 (1)

W. Hübner, K. H. Bennemann, and K. Böhmer, Phys. Rev. B 50, 17597 (1994).
[CrossRef]

1993 (1)

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

1987 (2)

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

J. E. Sipe, D. J. Moss, and H. M. van Driel, Phys. Rev. B 35, 1129 (1987).
[CrossRef]

1971 (1)

J. Rudnick and E. A. Stern, Phys. Rev. B 4, 4274 (1971).
[CrossRef]

1962 (1)

N. Bloembergen and P. S. Pershan, Phys. Rev. 128, 606 (1962).
[CrossRef]

Averitt, R. D.

Bennemann, K. H.

W. Hübner, K. H. Bennemann, and K. Böhmer, Phys. Rev. B 50, 17597 (1994).
[CrossRef]

Bloembergen, N.

N. Bloembergen and P. S. Pershan, Phys. Rev. 128, 606 (1962).
[CrossRef]

Böhmer, K.

W. Hübner, K. H. Bennemann, and K. Böhmer, Phys. Rev. B 50, 17597 (1994).
[CrossRef]

Bron, W. E.

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

Chang, C. S.

C. S. Chang and J. T. Lue, Surf. Sci. 393, 231 (1997).
[CrossRef]

Coutaz, J.-L.

F. Kadlec, P. Kužel, and J.-L. Coutaz, Opt. Lett. 29, 2674 (2004).
[CrossRef] [PubMed]

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

Dai, H.-L.

S. M. Dounce, M. Yang, and H.-L. Dai, Phys. Rev. B 67, 205410 (2003).
[CrossRef]

Dounce, S. M.

S. M. Dounce, M. Yang, and H.-L. Dai, Phys. Rev. B 67, 205410 (2003).
[CrossRef]

Elsayed-Ali, H. E.

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

Fisher, G. L.

Funk, D. J.

Hilton, D. J.

Hübner, W.

W. Hübner, K. H. Bennemann, and K. Böhmer, Phys. Rev. B 50, 17597 (1994).
[CrossRef]

Juhasz, T.

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

Kadlec, F.

Kittel, C.

C. Kittel, Introduction to Solid State Physics (Wiley, New York, 1996).

Kužel, P.

Lue, J. T.

C. S. Chang and J. T. Lue, Surf. Sci. 393, 231 (1997).
[CrossRef]

Maystre, D.

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

McGilp, J. F.

J. F. McGilp, Surf. Rev. Lett. 6, 529 (1999).
[CrossRef]

Meserole, C. A.

Moss, D. J.

J. E. Sipe, D. J. Moss, and H. M. van Driel, Phys. Rev. B 35, 1129 (1987).
[CrossRef]

Nevière, M.

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

Pershan, P. S.

N. Bloembergen and P. S. Pershan, Phys. Rev. 128, 606 (1962).
[CrossRef]

Reinisch, R.

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

Rudnick, J.

J. Rudnick and E. A. Stern, Phys. Rev. B 4, 4274 (1971).
[CrossRef]

Sipe, J. E.

J. E. Sipe, D. J. Moss, and H. M. van Driel, Phys. Rev. B 35, 1129 (1987).
[CrossRef]

Smith, G. O.

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

Stern, E. A.

J. Rudnick and E. A. Stern, Phys. Rev. B 4, 4274 (1971).
[CrossRef]

Suárez, C.

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

Taylor, A. J.

Thompson, J. D.

van Driel, H. M.

J. E. Sipe, D. J. Moss, and H. M. van Driel, Phys. Rev. B 35, 1129 (1987).
[CrossRef]

Yang, M.

S. M. Dounce, M. Yang, and H.-L. Dai, Phys. Rev. B 67, 205410 (2003).
[CrossRef]

J. Appl. Phys. (1)

J.-L. Coutaz, D. Maystre, M. Nevière, and R. Reinisch, J. Appl. Phys. 62, 1529 (1987).
[CrossRef]

Opt. Lett. (2)

Phys. Rev. (1)

N. Bloembergen and P. S. Pershan, Phys. Rev. 128, 606 (1962).
[CrossRef]

Phys. Rev. B (5)

T. Juhasz, H. E. Elsayed-Ali, G. O. Smith, C. Suárez, and W. E. Bron, Phys. Rev. B 48, 15488 (1993).
[CrossRef]

W. Hübner, K. H. Bennemann, and K. Böhmer, Phys. Rev. B 50, 17597 (1994).
[CrossRef]

S. M. Dounce, M. Yang, and H.-L. Dai, Phys. Rev. B 67, 205410 (2003).
[CrossRef]

J. E. Sipe, D. J. Moss, and H. M. van Driel, Phys. Rev. B 35, 1129 (1987).
[CrossRef]

J. Rudnick and E. A. Stern, Phys. Rev. B 4, 4274 (1971).
[CrossRef]

Rev. Sci. Instrum. (1)

F. Kadlec, Rev. Sci. Instrum. 76, 043101 (2005).
[CrossRef]

Surf. Rev. Lett. (1)

J. F. McGilp, Surf. Rev. Lett. 6, 529 (1999).
[CrossRef]

Surf. Sci. (1)

C. S. Chang and J. T. Lue, Surf. Sci. 393, 231 (1997).
[CrossRef]

Other (2)

C. Kittel, Introduction to Solid State Physics (Wiley, New York, 1996).

E. Palik, ed., Handbook of Optical Constants of Solids (Academic, New York, 1985).

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Figures (2)

Fig. 1
Fig. 1

Integrated THz pulse amplitude as a function of d with both the excitation and the THz beam p polarized; angle of incidence 45°. Inset, THz spectrum for d = 205 nm and d = 115 nm (linearly scaled).

Fig. 2
Fig. 2

Integrated THz pulse amplitude as a function of θ for p and s polarization of excitation beam d = 205 nm . Inset, relative phase shift between the THz pulses in the two polarizations. Symbols, experimental data; curves, best fit using Eq. (1) for p polarization and Eq. (2) for s polarization.

Equations (3)

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E p Ω , p = B [ χ x z x F c ( f c * f s + f c f s * ) t p 2 + χ z x x F s f c t p 2 + χ z z z F s f s t p 2 ]
E s Ω , p = B χ z x x F s t s 2 ,
B = ε 0 2 E 0 ( ω ) 2 N F c + n f c 1 N cos θ + F c ,

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