OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 1 — Jan. 1, 2010
  • pp: 16–26

Terahertz emission from a femtosecond laser focus in a two-color scheme

Alexey V. Balakin, Alexander V. Borodin, Igor A. Kotelnikov, and Alexander P. Shkurinov  »View Author Affiliations


JOSA B, Vol. 27, Issue 1, pp. 16-26 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000016


View Full Text Article

Enhanced HTML    Acrobat PDF (232 KB) | SpotlightSpotlight on Optics Open Access





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We critically revise the theory of terahertz emission from a plasma filament induced in a gas media by one or two focusd femtosecond laser pulses. We distinguish a radiation pressure force (RPF) from a ponderomotive force (PF), discuss conditions for one of these forces to be the dominating contribution to the terahertz emission, and also show that the angular distribution of the emitted power critically depends on which of the two forces dominates in a particular experiment. We show that the experimentally observed periodic dependence of the emitted terahertz power on the gas pressure reveals the dominating role of the RPF over the PF, whereas the angular diagram of the emission allows us to determine the predominant direction of the force. We also emphasize that the terahertz emission originated by a transient photocurrent exhibits a different dependency from the phase difference between the first and the second harmonics of the optic laser field, which generally enables the experimental detection of the prevailing mechanism of the terahertz emission from the plasma filament.

© 2009 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(260.3090) Physical optics : Infrared, far
(300.2570) Spectroscopy : Four-wave mixing
(350.5400) Other areas of optics : Plasmas

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 3, 2009
Manuscript Accepted: October 22, 2009
Published: December 11, 2009

Virtual Issues
January 8, 2010 Spotlight on Optics

Citation
Alexey V. Balakin, Alexander V. Borodin, Igor A. Kotelnikov, and Alexander P. Shkurinov, "Terahertz emission from a femtosecond laser focus in a two-color scheme," J. Opt. Soc. Am. B 27, 16-26 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-1-16


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. P. Sprangle, E. Esarey, and A. Ting, “Nonlinear theory of intense laser-plasma interactions,” Phys. Rev. Lett. 64, 2011-2014 (1990). [CrossRef] [PubMed]
  2. P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett. 71, 1994-1997 (1993). [CrossRef] [PubMed]
  3. H. Hamster, A. Sullivan, S. Gordon, W. White, and R. W. Falcone, “Subpicosecond, electromagnetic pulses from intense laser-plasma interaction,” Phys. Rev. Lett. 71, 2725-2728 (1993). [CrossRef] [PubMed]
  4. H. Hamster, A. Sullivan, S. Gordon, and R. W. Falcone, “Short-pulse terahertz radiation from high-intensity-laser-produced plasmas,” Phys. Rev. E 49, 671-677 (1994). [CrossRef]
  5. P. Sprangle, J. R. Peñano, B. Hafizi, and C. A. Kapetanakos, “Ultrashort laser pulses and electromagnetic pulse generation in air and on dielectric surfaces,” Phys. Rev. E 69, 066415 (2004). [CrossRef]
  6. L. M. Gorbunov and A. A. Frolov, “Emission of low-frequency electromagnetic waves by a short laser pulse in stratified rarefied plasma,” J. Exp. Theor. Phys. 83, 967-973 (1996).
  7. D. J. Cook and R. M. Hochstrasser, “Intense terahertz pulses by four-wave rectification in air,” Opt. Lett. 25, 1210-1212 (2000). [CrossRef]
  8. T. Bartel, P. Gaal, K. Reimann, M. Woerner, and T. Elsaesser, “Generation of single-cycle THz transients with high electric-field amplitudes,” Opt. Lett. 30, 2805-2807 (2005). [CrossRef] [PubMed]
  9. M. Kress, T. Löffler, M. D. Thomson, R. Dörner, H. Gimpel, K. Zrost, T. Ergler, R. Moshammer, U. Morgner, J. Ullrich, and H. G. Roskos, “Determination of the carrier-envelope phase of few-cycle laser pulses with terahertz-emission spectroscopy,” Opt. Lett. 29, 1120-1122 (2004). [CrossRef] [PubMed]
  10. N. Bloembergen, “Recent progress in four-wave mixing spectroscopy,” in Laser Spectroscopy, H.Walther and K.W.Rothe, eds. (Springer, 1979), Vol. IV, pp. 340-348.
  11. X. Xie, J. Dai, and X.-C. Zhang, “Coherent control of THz wave generation in ambient air,” Phys. Rev. Lett. 96, 075005 (2006). [CrossRef] [PubMed]
  12. J. Reintjes, Nonlinear Optical Parametric Processes in Liquids and Gases, 2nd ed. (Academic, 1984).
  13. A. Houard, Y. Liu, B. Prade, and A. Mysyrowicz, “Polarization analysis of terahertz radiation generated by four-wave mixing in air,” Opt. Lett. 33, 1195-1197 (2008). [CrossRef] [PubMed]
  14. J. Dai, X. Xie, and X.-C. Zhang, “Detection of broadband terahertz waves with a laser-induced plasma in gases,” Phys. Rev. Lett. 97, 103903 (2006). [CrossRef] [PubMed]
  15. X. Lu, N. Karpowicz, and X.-C. Zhang, “Broadband terahertz detection with selected gases,” J. Opt. Soc. Am. B 26, A66-A73 (2009). [CrossRef]
  16. K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15, 4577-4584 (2007). [CrossRef] [PubMed]
  17. M. Kress, T. Löffler, M. D. Thomson, R. Dörner, H. Gimpel, K. Zrost, T. Ergler, R. Moshammer, U. Morgner, J. Ullrich, and H. G. Roskos, “Determination of the carrier-envelope phase of few-cycle laser pulses with terahertz-emission spectroscopy,” Nat. Phys. 2, 327-331 (2006). [CrossRef]
  18. C.-C. Cheng, E. M. Wright, and J. V. Moloney, “Generation of electromagnetic pulses from plasma channels induced by femtosecond light strings,” Phys. Rev. Lett. 87, 213001 (2001). [CrossRef] [PubMed]
  19. N. Bloembergen, R. K. Chang, S. S. Jha, and C. H. Lee, “Optical second-harmonic generation in reflection from media with inversion symmetry,” Phys. Rev. 174, 813-822 (1968). [CrossRef]
  20. A. Proulx, A. Talebpour, S. Petit, and S. L. Chin, “Fast pulsed electric field created from the self-generated filament of a femtosecond Ti:sapphire laser pulse in air,” Opt. Commun. 174, 305-309 (2000). [CrossRef]
  21. J. F. Ready, Effects of High Power Laser Radiation (Academic, 1971).
  22. G. A. Askar'yan, “Cherenkov radiation from optical pulses,” Phys. Rev. Lett. 57, 2470 (1986). [CrossRef] [PubMed]
  23. B. B. Kadomtsev, Collective Phenomena in Plasmas (Pergamon, 1982).
  24. L. A. Artsimovich and R. Z. Sagdeev, Plasma Physics for Physicists (Atomizdat, 1979) (in Russian).
  25. R. Fitzpatrick, The Physics of Plasmas (Lulu, 2008).
  26. L. D. Landau and E. M. Lifshitz, The Classical Theory of Fields, Vol. II of Course of Theoretical Physics, 4th ed. (Butterworth & Heinemann, 1998).
  27. Y. Chen, M. Yamaguchi, M. Wang, and X.-C. Zhang, “Terahertz pulse generation from noble gases,” Appl. Phys. Lett. 91, 251116 (2007). [CrossRef]
  28. V. S. Popov, “Tunnel and multiphoton ionization of atoms and ions in a strong laser field (Keldysh theory),” Phys. Usp. 47, 855-885 (2004). [CrossRef]
  29. V. S. Popov, “Multiphoton ionization of atoms by an ultrashort laser pulse,” JETP Lett. 73, 1-5 (2001). [CrossRef]
  30. This condition can be rewritten as cEω2/8π⪢(α8mc3/32πre3)(J/JH)3/(J/ℏω)2, where α is the fine structure constant, re is the classical electron radius, J/JH is the ratio of the potential of ionization to that of the atom of hydrogen, and J/ℏω is the number of photons required for the ionization. Numerically, this condition means that the laser power flux density should exceed 8.8×1015(J/JH)3/(J/ℏω)2 W/cm2.
  31. N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102, 093001 (2009). [CrossRef] [PubMed]
  32. C. Cuthbertson and M. Cuthbertson, “On the refraction and dispersion of krypton and xenon and their relation to those of helium and argon,” Proc. R. Soc. London, Ser. A 84, 2805-2807 (1910).
  33. C. Cuthbertson and M. Cuthbertson, “On the refraction and dispersion of neon,” Proc. R. Soc. London, Ser. A 83, 149-151 (1910). [CrossRef]
  34. S. A. Korff and G. Breit, “Optical dispersion,” Rev. Mod. Phys. 4, 471-503 (1932). [CrossRef]
  35. E. R. Peck and D. J. Fisher, “Dispersion of argon,” J. Opt. Soc. Am. A 54, 1362-1364 (1964). [CrossRef]

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.

Figures

Fig. 1 Fig. 2
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited