Abstract

Results of experimental and theoretical investigations on generation of terahertz radiation at the interaction of femtosecond laser pulses with a metal surface are presented. Investigations are performed with the laser pulse intensities higher compared with that used in papers [Opt. Lett. 29, 2674 (2004) [CrossRef]  ; Opt. Lett. 30, 1402 (2005) [CrossRef]  ]. The most effective generation is observed for p-polarized optical pulses with incidence angles in the range 5°–10° (from the surface), depending on the kind of metal. For the copper, the exponential growth of terahertz pulse energy with the increase of optical pulse energy was registered. Theoretical interpretation for some of the experimental results is proposed based on the model of free electrons in metal.

© 2012 Optical Society of America

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References

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2011 (2)

V. L. Bratman, A. G. Litvak, and E. V. Suvorov, Phys. Usp. 54, 837 (2011).
[CrossRef]

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

2007 (3)

M. Tonouchi, Nat. Photon. 1, 97 (2007).
[CrossRef]

K. Reimann, Rep. Prog. Phys. 70, 1597 (2007).
[CrossRef]

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

2005 (1)

2004 (3)

1980 (1)

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Akhmedzhanov, R. A.

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

Averitt, R. D.

Bratman, V. L.

V. L. Bratman, A. G. Litvak, and E. V. Suvorov, Phys. Usp. 54, 837 (2011).
[CrossRef]

Coutaz, J.-L.

Fadeev, D. A.

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

Fisher, G. L.

Fukui, M.

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Funk, D. J.

Golubev, S. V.

S. V. Golubev, E. V. Suvorov, and A. G. Shalashov, JETP Lett. 79, 361 (2004).
[CrossRef]

Hilton, D. J.

Ilyakov, I. E.

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

Kadlec, F.

Kreß, M.

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

Kužel, P.

Litvak, A. G.

V. L. Bratman, A. G. Litvak, and E. V. Suvorov, Phys. Usp. 54, 837 (2011).
[CrossRef]

Löffler, T.

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

Meserole, C. A.

Mironov, V. A.

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

Reimann, K.

K. Reimann, Rep. Prog. Phys. 70, 1597 (2007).
[CrossRef]

Roskos, H. G.

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

Shalashov, A. G.

S. V. Golubev, E. V. Suvorov, and A. G. Shalashov, JETP Lett. 79, 361 (2004).
[CrossRef]

Shishkin, B. V.

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

Sipe, J. E.

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Slater, J. C.

J. C. Slater, Quantum Theory of Molecules and Solids, Vol. 3: Insulators, Semiconductors, and Metals (McGraw-Hill, 1967).

So, V. C. Y.

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Stegman, G. I.

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Suvorov, E. V.

V. L. Bratman, A. G. Litvak, and E. V. Suvorov, Phys. Usp. 54, 837 (2011).
[CrossRef]

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

S. V. Golubev, E. V. Suvorov, and A. G. Shalashov, JETP Lett. 79, 361 (2004).
[CrossRef]

Taylor, A. J.

Thompson, J. D.

Tomson, M. D.

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

Tonouchi, M.

M. Tonouchi, Nat. Photon. 1, 97 (2007).
[CrossRef]

Xu, J.

X.-C. Zhang and J. Xu, Introduction to THz Wave Photonics (Springer, 2010).

Zhang, X.-C.

X.-C. Zhang and J. Xu, Introduction to THz Wave Photonics (Springer, 2010).

J. Infrared Millimeter Terahertz Waves (1)

E. V. Suvorov, R. A. Akhmedzhanov, D. A. Fadeev, I. E. Ilyakov, V. A. Mironov, and B. V. Shishkin, J. Infrared Millimeter Terahertz Waves 32, 1243 (2011).
[CrossRef]

JETP Lett. (1)

S. V. Golubev, E. V. Suvorov, and A. G. Shalashov, JETP Lett. 79, 361 (2004).
[CrossRef]

Laser Photon. Rev. (1)

M. D. Tomson, M. Kreß, T. Löffler, and H. G. Roskos, Laser Photon. Rev. 1, 349 (2007).
[CrossRef]

Nat. Photon. (1)

M. Tonouchi, Nat. Photon. 1, 97 (2007).
[CrossRef]

Opt. Lett. (3)

Phys. Usp. (1)

V. L. Bratman, A. G. Litvak, and E. V. Suvorov, Phys. Usp. 54, 837 (2011).
[CrossRef]

Rep. Prog. Phys. (1)

K. Reimann, Rep. Prog. Phys. 70, 1597 (2007).
[CrossRef]

Solid State Commun. (1)

J. E. Sipe, V. C. Y. So, M. Fukui, and G. I. Stegman, Solid State Commun. 34, 523 (1980).
[CrossRef]

Other (3)

J. C. Slater, Quantum Theory of Molecules and Solids, Vol. 3: Insulators, Semiconductors, and Metals (McGraw-Hill, 1967).

D. Mittleman, ed., Sensing with Terahertz Radiation (Springer, 2003).

X.-C. Zhang and J. Xu, Introduction to THz Wave Photonics (Springer, 2010).

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Figures (2)

Fig. 1.
Fig. 1.

Intensity distribution in a radiated THz pulse at a distance 5 cm from the radiating spot at the metal surface in (a) p and (b) s polarizations.

Fig. 2.
Fig. 2.

Dependencies of THz pulse energy on the incidence angle of the optical pulse for copper (solid triangles for our experimental results and the solid curve for the calculated curve from our model) and gold (open diamonds for experimental results from [7] and dashed curve for the result of calculations from our model).

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

S=e3n0m2ω02δ(x)EEτT,
S=eE024πmωp3νω04sin2αcosα(ωp/ω0)2sin2α+1δ(x)z0,
jt=e2n0mETHz+S,
WTHze2E04TΔSm2c·ωp4ν2ω08·sin2αcos2α[(ωp/ω0)2sin2α+1]2,
WTHzMAXe2E04TΔS4m2c·ωp2ν2ω06,

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