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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 13, Iss. 2 — Feb. 1, 1996
  • pp: 330–335

Blue-shifted third-harmonic generation and correlated self-guiding during ultrafast barrier suppression ionization of subatmospheric density noble gases

C. W. Siders, N. C. Turner, M. C. Downer, A. Babine, A. Stepanov, and A. M. Sergeev  »View Author Affiliations


JOSA B, Vol. 13, Issue 2, pp. 330-335 (1996)
http://dx.doi.org/10.1364/JOSAB.13.000330


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Abstract

The generation of frequency upshifted, pressure-tunable third-harmonic pulses during ultrafast ionization of subatmospheric noble gases at peak intensity 1016 W/cm2 is reported. Pressure tuning of the power spectrum centroid over the range 10−5 ≲ Δω/ω ≲ 10−1, corresponding to a pressure range of 0.1 ≲ p ≲ 700 Torr, is demonstrated. We also demonstrate that the blue-shifted portions of both the 3ω and the ω pulses are preferentially self-guided in a limited pressure range (10 ≲ p ≲ 500 Torr), which is key to separating the pressure-tunable component of the harmonic from nontunable harmonic generated by means of atomic nonlinearities.

© 1996 Optical Society of America

Citation
C. W. Siders, N. C. Turner, M. C. Downer, A. Babine, A. Stepanov, and A. M. Sergeev, "Blue-shifted third-harmonic generation and correlated self-guiding during ultrafast barrier suppression ionization of subatmospheric density noble gases," J. Opt. Soc. Am. B 13, 330-335 (1996)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-13-2-330

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