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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 33 — Nov. 20, 2010
  • pp: 6512–6521

Femtosecond laser-induced thermal lens effect in chromium film

Linwei Zhu, Changhe Zhou, and Wei Jia  »View Author Affiliations

Applied Optics, Vol. 49, Issue 33, pp. 6512-6521 (2010)

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The thermal lens (TL) effect induced by femtosecond laser pulses in chromium film is reported. A Fresnel diffraction theory is used to explain the TL effect. The intensity profile of the TL calculated by the theoretical model is in agreement with the experimental results. The contrast ratio of the TL is defined to describe the TL effect, and we find that the maximum contrast ratio of the TL effect is obtained when the probe beam is recorded at a characteristic distance. The dependence of the contrast ratio of the TL on different pump laser power levels and delay times is also investigated. Numerical simulations are also consistent with the experimental results.

© 2010 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(140.6810) Lasers and laser optics : Thermal effects
(310.6860) Thin films : Thin films, optical properties
(320.2250) Ultrafast optics : Femtosecond phenomena
(350.6830) Other areas of optics : Thermal lensing

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 29, 2010
Manuscript Accepted: October 6, 2010
Published: November 18, 2010

Linwei Zhu, Changhe Zhou, and Wei Jia, "Femtosecond laser-induced thermal lens effect in chromium film," Appl. Opt. 49, 6512-6521 (2010)

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