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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 16 — Aug. 1, 2011
  • pp: 15090–15097

Towards generation of mJ-level ultrashort THz pulses by optical rectification

József András Fülöp, László Pálfalvi, Matthias C. Hoffmann, and János Hebling  »View Author Affiliations


Optics Express, Vol. 19, Issue 16, pp. 15090-15097 (2011)
http://dx.doi.org/10.1364/OE.19.015090


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Abstract

Optical rectification of ultrashort laser pulses in LiNbO3 by tilted-pulse-front excitation is a powerful way to generate near single-cycle terahertz (THz) pulses. Calculations were carried out to optimize the output THz peak electric field strength. The results predict peak electric field strengths on the MV/cm level in the 0.3–1.5 THz frequency range by using optimal pump pulse duration of about 500 fs, optimal crystal length, and cryogenic temperatures for reducing THz absorption in LiNbO3. The THz electric field strength can be increased further to tens of MV/cm by focusing. Using optimal conditions together with the contact grating technique THz pulses with 100 MV/cm focused electric field strength and energies on the tens-of-mJ scale are feasible.

© 2011 OSA

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 8, 2011
Revised Manuscript: June 7, 2011
Manuscript Accepted: June 9, 2011
Published: July 21, 2011

Citation
József András Fülöp, László Pálfalvi, Matthias C. Hoffmann, and János Hebling, "Towards generation of mJ-level ultrashort THz pulses by optical rectification," Opt. Express 19, 15090-15097 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-16-15090


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References

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