Abstract

The possibility for up-scaling the energy of sub-ps THz pulses generated by tilted pulse front excitation is demonstrated. Using 150-fs-long 500 μJ optical pump pulses at 800 nm up to 240 nJ THz pulse energy has been achieved. For a 1.2 mm2 pump spot area, the energy conversion efficiency of pump energy to THz pulse energy had a maximum of 5 × 10-4 at 300 μJ pump pulse energy. The corresponding photon conversion efficiency amounts to 10 %. For comparison, the maximum attainable THz pulse energy was limited to 3.1 nJ if a line focusing excitation geometry was utilized. This limit was reached at 32 μJ pump energy. For the latter configuration the THz energy dropped for larger pump energies. The tilted pulse front excitation allows further up-scaling of the THz pulse energy by using a larger pump spot size and still stronger pump pulses.

© 2005 Optical Society of America

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  1. C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
    [CrossRef]
  2. G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
    [CrossRef]
  3. D. You, R. R. Jones, P. H. Bucksbaum, and D. R. Dykaar, “Generation of high-power sub-single-cycle 500-fs electromagnetic pulses,” Opt. Lett. 18, 290–292 (1993).
    [CrossRef] [PubMed]
  4. E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
    [CrossRef]
  5. Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
    [CrossRef]
  6. A. Nahata, A. S. Weling, and T. F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,” Appl. Phys. Lett. 69, 2321–2323 (1996).
    [CrossRef]
  7. B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
    [CrossRef]
  8. Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
    [CrossRef]
  9. J. K. Wahlstrand and R. Merlin, “Cherenkov radiation emitted by ultrafast laser pulses and the generation of coherent polaritons,” Phys. Rev. B 68, 054301 (2003).
    [CrossRef]
  10. J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
    [CrossRef]
  11. J. Hebling, G. Almási, I. Z. Kozma, and J. Kuhl, “Velocity matching by pulse front tilting for large-area THz-pulse generation,” Opt. Express 10, 1161–1166 (2002). http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-21-1161
    [PubMed]
  12. A. G. Stepanov, J. Hebling, and J. Kuhl, “Efficient generation of subpicosecond terahertz radiation by phase-matched optical rectification using ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. Lett. 83, 3000–3002 (2003).
    [CrossRef]
  13. D. A. Kleinman and D. H. Auston, “Theory of electrooptic shock radiation in nonlinear optical media,” IEEE J. Quantum Electron. 20, 964–970 (1984).
    [CrossRef]
  14. A. G. Stepanov, J. Hebling, and J. Kuhl, “THz generation via optical rectification with ultrashort laser pulse focused to a line,” Appl. Phys. B 81, 23–26 (2005).
    [CrossRef]
  15. K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, and M. Woerner, “Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimetre,” Opt. Lett. 28, 471–473 (2003).
    [CrossRef] [PubMed]
  16. R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
    [CrossRef]
  17. J. Hebling, A. G. Stepanov, G. Almási, and J. Kuhl, “Enhanced polariton decay in LiNbO3 due to stimulated emission of acoustic phonons,” Ultrafast Phenomena 2004.

2005 (1)

A. G. Stepanov, J. Hebling, and J. Kuhl, “THz generation via optical rectification with ultrashort laser pulse focused to a line,” Appl. Phys. B 81, 23–26 (2005).
[CrossRef]

2004 (2)

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

2003 (4)

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, and M. Woerner, “Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimetre,” Opt. Lett. 28, 471–473 (2003).
[CrossRef] [PubMed]

A. G. Stepanov, J. Hebling, and J. Kuhl, “Efficient generation of subpicosecond terahertz radiation by phase-matched optical rectification using ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. Lett. 83, 3000–3002 (2003).
[CrossRef]

J. K. Wahlstrand and R. Merlin, “Cherenkov radiation emitted by ultrafast laser pulses and the generation of coherent polaritons,” Phys. Rev. B 68, 054301 (2003).
[CrossRef]

2002 (1)

2000 (1)

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

1999 (1)

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

1996 (3)

A. Nahata, A. S. Weling, and T. F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,” Appl. Phys. Lett. 69, 2321–2323 (1996).
[CrossRef]

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

1993 (1)

1990 (1)

B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
[CrossRef]

1984 (1)

D. A. Kleinman and D. H. Auston, “Theory of electrooptic shock radiation in nonlinear optical media,” IEEE J. Quantum Electron. 20, 964–970 (1984).
[CrossRef]

Almási, G.

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

J. Hebling, G. Almási, I. Z. Kozma, and J. Kuhl, “Velocity matching by pulse front tilting for large-area THz-pulse generation,” Opt. Express 10, 1161–1166 (2002). http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-21-1161
[PubMed]

J. Hebling, A. G. Stepanov, G. Almási, and J. Kuhl, “Enhanced polariton decay in LiNbO3 due to stimulated emission of acoustic phonons,” Ultrafast Phenomena 2004.

Auston, D. H.

B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
[CrossRef]

D. A. Kleinman and D. H. Auston, “Theory of electrooptic shock radiation in nonlinear optical media,” IEEE J. Quantum Electron. 20, 964–970 (1984).
[CrossRef]

Bartal, B.

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

Beere, H. E.

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

Bokor, J.

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

Bucksbaum, P. H.

Budiarto, E.

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

Davies, A. G.

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

DeSalvo, R.

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

Dykaar, D. R.

Elsaesser, T.

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, and M. Woerner, “Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimetre,” Opt. Lett. 28, 471–473 (2003).
[CrossRef] [PubMed]

Galvanauskas, A.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Gillespie, W. A.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

Hagan, D. J.

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

Hebling, J.

A. G. Stepanov, J. Hebling, and J. Kuhl, “THz generation via optical rectification with ultrashort laser pulse focused to a line,” Appl. Phys. B 81, 23–26 (2005).
[CrossRef]

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

A. G. Stepanov, J. Hebling, and J. Kuhl, “Efficient generation of subpicosecond terahertz radiation by phase-matched optical rectification using ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. Lett. 83, 3000–3002 (2003).
[CrossRef]

J. Hebling, G. Almási, I. Z. Kozma, and J. Kuhl, “Velocity matching by pulse front tilting for large-area THz-pulse generation,” Opt. Express 10, 1161–1166 (2002). http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-21-1161
[PubMed]

J. Hebling, A. G. Stepanov, G. Almási, and J. Kuhl, “Enhanced polariton decay in LiNbO3 due to stimulated emission of acoustic phonons,” Ultrafast Phenomena 2004.

Heinz, T. F.

A. Nahata, A. S. Weling, and T. F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,” Appl. Phys. Lett. 69, 2321–2323 (1996).
[CrossRef]

Hu, B. B.

B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
[CrossRef]

Jeong, S.

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

Jones, R. R.

Kleinman, D. A.

D. A. Kleinman and D. H. Auston, “Theory of electrooptic shock radiation in nonlinear optical media,” IEEE J. Quantum Electron. 20, 964–970 (1984).
[CrossRef]

Knippels, G. M. H.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

Kozma, I. Z.

Kuhl, J.

A. G. Stepanov, J. Hebling, and J. Kuhl, “THz generation via optical rectification with ultrashort laser pulse focused to a line,” Appl. Phys. B 81, 23–26 (2005).
[CrossRef]

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

A. G. Stepanov, J. Hebling, and J. Kuhl, “Efficient generation of subpicosecond terahertz radiation by phase-matched optical rectification using ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. Lett. 83, 3000–3002 (2003).
[CrossRef]

J. Hebling, G. Almási, I. Z. Kozma, and J. Kuhl, “Velocity matching by pulse front tilting for large-area THz-pulse generation,” Opt. Express 10, 1161–1166 (2002). http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-21-1161
[PubMed]

J. Hebling, A. G. Stepanov, G. Almási, and J. Kuhl, “Enhanced polariton decay in LiNbO3 due to stimulated emission of acoustic phonons,” Ultrafast Phenomena 2004.

Lee, Y.-S.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Linfield, E. H.

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

Luo, C.

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

MacLeod, A. M.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

Margolies, J.

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

Meade, T.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Merlin, R.

J. K. Wahlstrand and R. Merlin, “Cherenkov radiation emitted by ultrafast laser pulses and the generation of coherent polaritons,” Phys. Rev. B 68, 054301 (2003).
[CrossRef]

Nahata, A.

A. Nahata, A. S. Weling, and T. F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,” Appl. Phys. Lett. 69, 2321–2323 (1996).
[CrossRef]

Norris, T. B.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Oepts, D.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

Perlin, V.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Reimann, K.

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, and M. Woerner, “Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimetre,” Opt. Lett. 28, 471–473 (2003).
[CrossRef] [PubMed]

Said, A. A.

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

Sheik-Bahae, M.

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

Shen, Y. C.

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

Smith, P. R.

B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
[CrossRef]

Smith, R. P.

Son, J.

E. Budiarto, J. Margolies, S. Jeong, J. Son, and J. Bokor, “High-intensity terahertz pulses at 1-kHz repetition rate,” IEEE J. Quantum Electron. 32, 1839–1846 (1996).
[CrossRef]

Stepanov, A. G.

A. G. Stepanov, J. Hebling, and J. Kuhl, “THz generation via optical rectification with ultrashort laser pulse focused to a line,” Appl. Phys. B 81, 23–26 (2005).
[CrossRef]

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

A. G. Stepanov, J. Hebling, and J. Kuhl, “Efficient generation of subpicosecond terahertz radiation by phase-matched optical rectification using ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. Lett. 83, 3000–3002 (2003).
[CrossRef]

J. Hebling, A. G. Stepanov, G. Almási, and J. Kuhl, “Enhanced polariton decay in LiNbO3 due to stimulated emission of acoustic phonons,” Ultrafast Phenomena 2004.

Upadhya, P. C.

Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, “Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters,” Appl. Phys. Lett. 83, 3117–3119 (2003).
[CrossRef]

van der Meer, A. F. G.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

van Stryland, E. W.

R. DeSalvo, A. A. Said, D. J. Hagan, E. W. van Stryland, and M. Sheik-Bahae, “Infrared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids,” IEEE J. Quantum Electron. 32, 1324–1333 (1996).
[CrossRef]

Wahlstrand, J. K.

J. K. Wahlstrand and R. Merlin, “Cherenkov radiation emitted by ultrafast laser pulses and the generation of coherent polaritons,” Phys. Rev. B 68, 054301 (2003).
[CrossRef]

Weiner, A. M.

Weling, A. S.

A. Nahata, A. S. Weling, and T. F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,” Appl. Phys. Lett. 69, 2321–2323 (1996).
[CrossRef]

Winful, H.

Y.-S. Lee, T. Meade, V. Perlin, H. Winful, T. B. Norris, and A. Galvanauskas, “Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate,” Appl. Phys. Lett. 76, 2505–2507 (2000).
[CrossRef]

Woerner, M.

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, and M. Woerner, “Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimetre,” Opt. Lett. 28, 471–473 (2003).
[CrossRef] [PubMed]

Yan, X.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

Yasumoto, M.

G. M. H. Knippels, X. Yan, A. M. MacLeod, W. A. Gillespie, M. Yasumoto, D. Oepts, and A. F. G. van der Meer, “Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses,” Phys. Rev. Lett. 83, 1578–1581 (1999).
[CrossRef]

You, D.

Zhang, X.-C.

B. B. Hu, X.-C. Zhang, D. H. Auston, and P. R. Smith, “Free-space radiation from electro-optic crystals,” Appl. Phys. Lett. 56, 506–508 (1990).
[CrossRef]

Appl. Phys. A (1)

C. Luo, K. Reimann, M. Woerner, and T. Elsaesser, “Nonlinear terahertz spectroscopy of semiconductor nanostructures,” Appl. Phys. A 78, 435–440 (2004).
[CrossRef]

Appl. Phys. B (2)

J. Hebling, A. G. Stepanov, G. Almási, B. Bartal, and J. Kuhl, “Tunable THz pulse generation by optical rectification of ultrashort laser pulses with tilted pulse fronts,” Appl. Phys. B 78, 593–599 (2004).
[CrossRef]

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Other (1)

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Supplementary Material (1)

» Media 1: GIF (1259 KB)     

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Figures (3)

Fig. 1.
Fig. 1.

Measured energy of THz pulses generated by the tilted pulse front (red circles) and line focusing (open blue squares) set-ups versus the energy of the 780 nm pump laser pulses (upper left part). Energy conversion efficiency versus the pump energy for the tilted pulse front set-up (lower right part).

Fig. 2.
Fig. 2.

Measured energy of THz pulses generated by the tilted pulse front (red circles) and the line focusing (blue squares) set-ups versus pump intensity. The THz pulse energy values for the line focusing set-up are multiplied by 26.

Fig. 3.
Fig. 3.

(1.3 MB) Numerical simulation of THz pulses generated in LiNbO3. Top panel: the pump pulse is focused from the left to a line perpendicular to the plane of display. Bottom panel: tilted pulse front set-up with an input pulse extending from -80 to + 80 μm. Red and yellow denote a positive amplitude of the electric field, blue a negative one.

Equations (1)

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E THz = C V m τ S ,

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