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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 2 — Jan. 15, 2009
  • pp: 157–159

Direct observation of the transient thermal-lensing effect using the phase-object Z-scan technique

Junyi Yang and Yinglin Song  »View Author Affiliations

Optics Letters, Vol. 34, Issue 2, pp. 157-159 (2009)

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A phase-object (PO) Z-scan technique, which can conveniently distinguish the transient thermal-lensing effect from the third-order nonlinear refraction, is described. The PO Z-scan trace of the transient thermal-lensing effect shows a valley–peak shape that is very different from the single-valley (peak) shape of the pure negative (positive) third-order nonlinearity. The nonlinear refraction of the C 70 /toluene solution is investigated by using the PO Z scan with 8 ns pulses at 532 nm wavelength as a test.

© 2009 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4870) Nonlinear optics : Photothermal effects

ToC Category:
Nonlinear Optics

Original Manuscript: August 27, 2008
Revised Manuscript: November 7, 2008
Manuscript Accepted: November 25, 2008
Published: January 13, 2009

Junyi Yang and Yinglin Song, "Direct observation of the transient thermal-lensing effect using the phase-object Z-scan technique," Opt. Lett. 34, 157-159 (2009)

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