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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 24 — Nov. 23, 2009
  • pp: 21488–21496

Stable UV to IR supercontinuum generation in calcium fluoride with conserved circular polarization states

Philip J. M. Johnson, Valentyn I. Prokhorenko, and R. J. Dwayne Miller  »View Author Affiliations


Optics Express, Vol. 17, Issue 24, pp. 21488-21496 (2009)
http://dx.doi.org/10.1364/OE.17.021488


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Abstract

The supercontinuum generated with a linearly polarized near-IR (775nm) pump in rotated calcium fluoride is shown to have intrinsic intensity and polarization modulations. To mask the rotation of the crystal plate, we circularly polarize the pump and find greatly improved output parameters for the generated white light: intensity fluctuations of 0.5% limited only by pump laser stability, and a circular polarization state—matching that of the pump—over the entire visible spectrum. This polarization conservation allows the return of the supercontinuum to a linear polarization state or to a pair of linearly polarized beams with correlated intensity fluctuations. We were also able to extend the supercontinuum source deep into the ultraviolet with a frequency doubled (387nm) pump, to serve as an new source to probe the region where most molecular photochemistry occurs.

© 2009 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

History
Original Manuscript: September 3, 2009
Revised Manuscript: November 2, 2009
Manuscript Accepted: November 3, 2009
Published: November 10, 2009

Citation
Philip J. M. Johnson, Valentyn I. Prokhorenko, and R. J. Dwayne Miller, "Stable UV to IR supercontinuum generation in calcium fluoride with conserved circular polarization states," Opt. Express 17, 21488-21496 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-24-21488


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