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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 4 — Apr. 1, 2013
  • pp: 994–999

Statistical properties of ultrafast supercontinuum generated by femtosecond Gaussian and Bessel beams: a comparative study

Donatas Majus and Audrius Dubietis  »View Author Affiliations


JOSA B, Vol. 30, Issue 4, pp. 994-999 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000994


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Abstract

We present a comparative experimental study of spectral broadening and supercontinuum (SC) generation in 3-mm-thick sapphire crystal using 800 nm, 130 fs pulses in low-numeric-aperture focused Gaussian and axicon-generated Bessel beam geometry. Despite the markedly higher input energy used in the case of the Bessel beam, the dynamics of spectral broadening appears to be very similar in both cases, eventually producing a flat SC spanning across the visible and near-infrared spectral range with low shot-to-shot fluctuations (standard deviation 1%) of the spectral intensity. The statistical analysis performed at different stages of the spectral broadening reveals that shot-to-shot fluctuations of the spectral intensity are associated with four-wave-mixing-induced spectral correlations.

© 2013 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 25, 2013
Revised Manuscript: February 20, 2013
Manuscript Accepted: February 22, 2013
Published: March 22, 2013

Citation
Donatas Majus and Audrius Dubietis, "Statistical properties of ultrafast supercontinuum generated by femtosecond Gaussian and Bessel beams: a comparative study," J. Opt. Soc. Am. B 30, 994-999 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-4-994

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