G. H. Welsh, N. T. Hunt, K. Wynne, "Terhertz-pulse emission through laser excitation of surface
plasmons in a mental grating," Phys. Rev. Lett. 98, 26803-26806 (2007).

X. J. Wu, X. S. Chen, F. L. Zhao, T. Q. Jia, G. Wang, "Terahertz radiation mechanisms in ZnSe at Femtosecond Laser
Pulse Excitation," Jpn. J. Appl. Phys. 46, 1497-1500 (2007).

T. Q. Jia, H. X. Chen, M. Huang, F. L. Zhao, X. X. Li, S. Z. Xu, H. Y. Sun, D. H. Feng, C. B. Li, X. F. Wang, R. X. Li, Z. Z. Xu, X. K. He, H. Kuroda, "Ultraviolet-infrared
femtosecond laser-induced damage in fused silica and CaF${\rm
}_{2}$ crystals," Phys.
Rev. B 73, 54105-54113 (2006).

F. Kadlec, P. Kuzel, J.-L. Coutaz, "Study of terahertz radiation generated by optical rectification
on thin gold films," Opt. Lett. 30, 1402-1404 (2005).

T. Q. Jia, H. X. Chen, M. Huang, F. L. Zhao, J. R. Qiu, R. X. Li, Z. Z. Xu, X. K. He, J. Zhang, H. Kuroda, "Formation of nanogratings on
the surface of a ZnSe crystal irradiated by femtosecond laser pulses," Phys. Rev. B 72, 125429-125432 (2005).

M. Reid, I. Cravetchi, R. Fedosejevs, "Enhanced nonlinear optical response of InP (100) membranes," Phys. Rev. B 71, 81306-81309 (2005).

M. Reid, I. V. Cravetchi, R. Fedosejevs, "Enhanced terahertz emission from porous InP (111) membranes," Appl. Phys. Lett. 86, 21904-21906 (2005).

H. Shima, S. Funakawa, C. Kimura, T. Sugino, "Electron emission from boron nitride films deposited on
patterned GaAs substrates," J. Vac. Sci. Technol.
B 23, 1084-1087 (2005).

M. Nakajima, Y. Oda, T. Suemoto, "Competing terahertz radiation mechanisms in semi-insulating
InP at high-density excitation," Appl. Phys.
Lett. 85, 2694-2696 (2004).

J. L. Hughes, E. C. Camus, M. D. Fraser, C. Jagadish, M. B. Johnston, "Carrier dynamics in ion-implanted GaAs studied
by simulation and observation of terahertz emission," Phys.
Rev. B 70, 235330.1-6 (2004).

M. Nakajima, M. Hangyo, M. Ohta, H. Miyazaki, "Polarity reversal of terahertz waves radiated from semi-insulating
InP surfaces induced by temperature," Phys.
Rev. B 67, 195308-195314 (2003).

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, X.-C. Zhang, "A direct comparison between
terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy," J. Appl. Phys. 89, 2357-2359 (2001).

T. Dekorsy, H. Auer, H. J. Baker, H. G. Roskos, H. Hurz, "THz electromagnetic emission by coherent infrared-active
phonons," Phys. Rev. B 53, 4005-4014 (1996).

Q. Wu, T. D. Hewitt, X.-C. Zhang, "Two-dimensional electro-optic imaging of THz beams," Appl. Phys. Lett. 69, 1026-1028 (1996).

D. M. Mittleman, R. H. Jacobsen, M. C. Nuss, "T-ray imaging," IEEE
J. Sel. Top. Quantum Electron. 2, 679-692 (1996).

J. B. Khurgin, "Optical rectification and terahertz emission
in semiconductors excited above the band gap," J.
Opt. Soc. Amer. B 11, 2492-2501 (1994).

P. N. Saeta, B. I. Greene, S. L. Chuang, "Short terahertz pulses from semiconductor
surfaces: The importance of bulk difference-frequency mixing," Appl. Phys. Lett. 63, 3482-3484 (1993).

A. A. Said, M. Sheik-Bahae, D. J. Hagan, T. H. Wei, J. Wang, J. Young, E. W. Van Stryland, "Determination of bound- electronic and free-carriernonlinearities
in ZnSe, GaAs, CdTe and ZnTe," J. Opt. Soc.
Amer. B 9, 405-414 (1992).

S. L. Chuang, S. S. Rink, B. I. Greene, P. N. Saeta, A. F. J. Levi, "Optical rectification at semiconductor surfaces," Phys. Rev. Lett. 68, 102-105 (1992).

X.-C. Zhang, D. H. Auston, "Optoelectronic measurement of semiconductor
surfaces and interfaces with femtosecond optics," J.
Appl. Phys. 71, 326-338 (1992).

R. G. Olsen, "Integral equations for electrostatics problems
with thin dielectric or conducting layers," IEEE
Trans. Elec. Ins. EI-21, 565-573 (1986).

K. Arya, "Electric field enhancement near a randomly rough metal surface:
The effect of a dielectric overlayer," Phys.
Rev. B 30, 7242-7249 (1984).

A. Wokaun, J. P. Gordan, P. F. Liao, "Radiation damping in surface-enhanced Raman
scattering," Phys. Rev. Lett. 48, 957-960 (1982).

P. F. Liao, A. Wokaun, "Lightning rod effect in surface enhanced
Raman scattering," J. Chem. Phys. 76, 751-752 (1982).

J. Gersten, A. Nitzan, "Electromagnetic theory of enhanced Raman
scattering by molecules adsorbed on rough surfaces," J.
Chem. Phys. 73, 3023-3037 (1980).

J. Daffe, R. G. Olsen, "An integral equation technique for solving rotationally
symmetric electrostatic problems in conducting and dielectric material," IEEE Trans. Power Appl. Syst. PAS-98, 1609-1616 (1979).

M. Nakajima, Y. Oda, T. Suemoto, "Competing terahertz radiation mechanisms in semi-insulating
InP at high-density excitation," Appl. Phys.
Lett. 85, 2694-2696 (2004).

Q. Wu, T. D. Hewitt, X.-C. Zhang, "Two-dimensional electro-optic imaging of THz beams," Appl. Phys. Lett. 69, 1026-1028 (1996).

P. N. Saeta, B. I. Greene, S. L. Chuang, "Short terahertz pulses from semiconductor
surfaces: The importance of bulk difference-frequency mixing," Appl. Phys. Lett. 63, 3482-3484 (1993).

M. Reid, I. V. Cravetchi, R. Fedosejevs, "Enhanced terahertz emission from porous InP (111) membranes," Appl. Phys. Lett. 86, 21904-21906 (2005).

D. M. Mittleman, R. H. Jacobsen, M. C. Nuss, "T-ray imaging," IEEE
J. Sel. Top. Quantum Electron. 2, 679-692 (1996).

R. G. Olsen, "Integral equations for electrostatics problems
with thin dielectric or conducting layers," IEEE
Trans. Elec. Ins. EI-21, 565-573 (1986).

J. Daffe, R. G. Olsen, "An integral equation technique for solving rotationally
symmetric electrostatic problems in conducting and dielectric material," IEEE Trans. Power Appl. Syst. PAS-98, 1609-1616 (1979).

X.-C. Zhang, D. H. Auston, "Optoelectronic measurement of semiconductor
surfaces and interfaces with femtosecond optics," J.
Appl. Phys. 71, 326-338 (1992).

J. Gersten, A. Nitzan, "Electromagnetic theory of enhanced Raman
scattering by molecules adsorbed on rough surfaces," J.
Chem. Phys. 73, 3023-3037 (1980).

J. B. Khurgin, "Optical rectification and terahertz emission
in semiconductors excited above the band gap," J.
Opt. Soc. Amer. B 11, 2492-2501 (1994).

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, X.-C. Zhang, "A direct comparison between
terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy," J. Appl. Phys. 89, 2357-2359 (2001).

P. F. Liao, A. Wokaun, "Lightning rod effect in surface enhanced
Raman scattering," J. Chem. Phys. 76, 751-752 (1982).

A. A. Said, M. Sheik-Bahae, D. J. Hagan, T. H. Wei, J. Wang, J. Young, E. W. Van Stryland, "Determination of bound- electronic and free-carriernonlinearities
in ZnSe, GaAs, CdTe and ZnTe," J. Opt. Soc.
Amer. B 9, 405-414 (1992).

H. Shima, S. Funakawa, C. Kimura, T. Sugino, "Electron emission from boron nitride films deposited on
patterned GaAs substrates," J. Vac. Sci. Technol.
B 23, 1084-1087 (2005).

X. J. Wu, X. S. Chen, F. L. Zhao, T. Q. Jia, G. Wang, "Terahertz radiation mechanisms in ZnSe at Femtosecond Laser
Pulse Excitation," Jpn. J. Appl. Phys. 46, 1497-1500 (2007).

T. Q. Jia, H. X. Chen, M. Huang, F. L. Zhao, X. X. Li, S. Z. Xu, H. Y. Sun, D. H. Feng, C. B. Li, X. F. Wang, R. X. Li, Z. Z. Xu, X. K. He, H. Kuroda, "Ultraviolet-infrared
femtosecond laser-induced damage in fused silica and CaF${\rm
}_{2}$ crystals," Phys.
Rev. B 73, 54105-54113 (2006).

J. L. Hughes, E. C. Camus, M. D. Fraser, C. Jagadish, M. B. Johnston, "Carrier dynamics in ion-implanted GaAs studied
by simulation and observation of terahertz emission," Phys.
Rev. B 70, 235330.1-6 (2004).

K. Arya, "Electric field enhancement near a randomly rough metal surface:
The effect of a dielectric overlayer," Phys.
Rev. B 30, 7242-7249 (1984).

M. Nakajima, M. Hangyo, M. Ohta, H. Miyazaki, "Polarity reversal of terahertz waves radiated from semi-insulating
InP surfaces induced by temperature," Phys.
Rev. B 67, 195308-195314 (2003).

M. Reid, I. Cravetchi, R. Fedosejevs, "Enhanced nonlinear optical response of InP (100) membranes," Phys. Rev. B 71, 81306-81309 (2005).

T. Q. Jia, H. X. Chen, M. Huang, F. L. Zhao, J. R. Qiu, R. X. Li, Z. Z. Xu, X. K. He, J. Zhang, H. Kuroda, "Formation of nanogratings on
the surface of a ZnSe crystal irradiated by femtosecond laser pulses," Phys. Rev. B 72, 125429-125432 (2005).

T. Dekorsy, H. Auer, H. J. Baker, H. G. Roskos, H. Hurz, "THz electromagnetic emission by coherent infrared-active
phonons," Phys. Rev. B 53, 4005-4014 (1996).

S. L. Chuang, S. S. Rink, B. I. Greene, P. N. Saeta, A. F. J. Levi, "Optical rectification at semiconductor surfaces," Phys. Rev. Lett. 68, 102-105 (1992).

G. H. Welsh, N. T. Hunt, K. Wynne, "Terhertz-pulse emission through laser excitation of surface
plasmons in a mental grating," Phys. Rev. Lett. 98, 26803-26806 (2007).

A. Wokaun, J. P. Gordan, P. F. Liao, "Radiation damping in surface-enhanced Raman
scattering," Phys. Rev. Lett. 48, 957-960 (1982).