OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 29, Iss. 10 — May. 14, 2004
  • pp: 1120–1122

Terahertz-pulse generation by photoionization of air with laser pulses composed of both fundamental and second-harmonic waves

Markus Kress, Torsten Löffler, Susanne Eden, Mark Thomson, and Hartmut G. Roskos  »View Author Affiliations

Optics Letters, Vol. 29, Issue 10, pp. 1120-1122 (2004)

View Full Text Article

Acrobat PDF (782 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Intense radiation in the terahertz (THz) frequency range can be generated by focusing of an ultrashort laser pulse composed of both a fundamental wave and its second-harmonic field into air, as reported previously by Cook et al. [Opt. Lett. 25, 1210 (2000)]. We identify a threshold for THz generation that proves that generation of a plasma is required and that the nonlinearity of air is insufficient to explain our measurements. An additional THz field component generated in the type I β -barium borate crystal used for second-harmonic generation has to be considered if one is to avoid misinterpretation of this kind of experiment. We conclude with a comparison that shows that the plasma emitter is competitive with other state-of-the-art THz emitters.

© 2004 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(260.3090) Physical optics : Infrared, far
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7120) Ultrafast optics : Ultrafast phenomena

Markus Kress, Torsten Löffler, Susanne Eden, Mark Thomson, and Hartmut G. Roskos, "Terahertz-pulse generation by photoionization of air with laser pulses composed of both fundamental and second-harmonic waves," Opt. Lett. 29, 1120-1122 (2004)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. D. J. Cook and R. M. Hochstrasser, Opt. Lett. 25, 1210 (2000).
  2. D. J. Cook, J.-X. Chen, and R. M. Hochstrasser, in Ultrafast Phenomena XII, T. Elsaesser S. Mukamel, M. M. Murnane, and N. F. Scherer, eds. (Springer-Verlag, Berlin, 2000), p. 197.
  3. T. Löffler, S. Eden, M. Thomson, and H. G. Roskos, in Ultrafast Phenomena XIII, R. D. Miller M. M. Murnane, N. F. Scherer, and A. M. Weiner, eds. (Springer-Verlag, Berlin, 2002), p. 274.
  4. B. B. Hu and X.-C. Zhang, Appl. Phys. Lett. 56, 506 (1990).
  5. V. Dmitriev, G. Gurzadyan, and D. Nikogosyan, Handbook of Nonlinear Optical Crystals (Springer-Verlag, Berlin, 1997).
  6. A. Yariv, Quantum Electronics (Wiley, New York, 1989).
  7. T. Löffler, “Erzeugung intensiver Pulse im Terahertzfrequenzbereich mittels laser-generierter Plasmen,” Ph.D. dissertation (Universität Frankfurt, Frankfurt, Germany, 2003), http://www.rz.uni-frankfurt.de/piweb/femto/index.html.
  8. S. Augst, D. D. Meyerhofer, D. Strickland, and S. L. Chin, J. Opt. Soc. Am. B 8, 858 (1991).
  9. T. Löffler, F. Jacob, and H. G. Roskos, Appl. Phys. Lett. 77, 453 (2000).
  10. T. Löffler and H. G. Roskos, J. Appl. Phys. 91, 2611 (2002).
  11. M. Mlejnek, E. M. Wright, and J. V. Moloney, Phys. Rev. E 58, 4903 (1999).
  12. D. You, R. R. Jones, and P. H. Bucksbaum, Opt. Lett. 18, 290 (1993).
  13. H. Hamster, A. Sullivan, S. Gordon, and R. W. Falcone, Phys. Rev. E 49, 671 (1994).
  14. H. Hamster, “Generation of subpicosecond terahertz radiation by laser-produced plasmas,” Ph.D. dissertation (University of California, Berkeley, Berkeley, Calif., 1993).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited