Toward generation of μj range sub-ps THz pulses by optical rectification

B. Bartal, I. Z. Kozma, A. G. Stepanov, G. Almási, J. Kuhl, E. Riedle, J. Hebling

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Recently the possibility of scaling up the energy of sub-ps THz pulses generated in lithium-niobate by tilted pulse front excitation was demonstrated. Using 500 μJ energy pump pulses at 780 nm center wavelength, we achieved THz pulses with energy up to 240 nJ. In this article, results of calculations using a simple model predict the possibility of increasing the THz pulse energy above 1 μJ and the quantum efficiency up to 50% by decreasing the temperature. The dependence of the THz pulse energy and the maximum achievable electric field on the crystal length and the pump pulse duration is also presented. According to the calculations, generation of the maximum THz energy needs a specific pump pulse duration, because of increasing dispersion and absorption with increasing frequency. Not only longer, but also shorter pulses lead to a degradation of the THz energy. Results of calculations for GaSe, GaP and ZnTe are also presented.

Original languageEnglish
Pages (from-to)419-423
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume86
Issue number3
DOIs
Publication statusPublished - Feb 2007

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rectification
pulses
pumps
energy
pulse duration
lithium niobates
quantum efficiency
degradation
scaling
electric fields
wavelengths
excitation
crystals

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Toward generation of μj range sub-ps THz pulses by optical rectification. / Bartal, B.; Kozma, I. Z.; Stepanov, A. G.; Almási, G.; Kuhl, J.; Riedle, E.; Hebling, J.

In: Applied Physics B: Lasers and Optics, Vol. 86, No. 3, 02.2007, p. 419-423.

Research output: Contribution to journalArticle

Bartal, B. ; Kozma, I. Z. ; Stepanov, A. G. ; Almási, G. ; Kuhl, J. ; Riedle, E. ; Hebling, J. / Toward generation of μj range sub-ps THz pulses by optical rectification. In: Applied Physics B: Lasers and Optics. 2007 ; Vol. 86, No. 3. pp. 419-423.
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