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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 28 — Dec. 31, 2012
  • pp: 29900–29908

Femtosecond laser volume ablation rate and threshold measurements by differential weighing

D Pietroy, Y Di Maio, B Moine, E Baubeau, and E Audouard  »View Author Affiliations

Optics Express, Vol. 20, Issue 28, pp. 29900-29908 (2012)

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Precise weight measurements of stainless steel, PZT and PMMA samples were performed after groove machining with femtosecond laser pulses (150 fs, 800 nm, 5 kHz) to determine volume ablation rates and ablation threshold with good accuracy. Weighing clearly enables faster determination of such phenomenological parameters without any methodological issue compared to other methods. Comparisons of the three types of materials reveal similar monotonous trends depending on peak fluences from 0.2 to 15 J/cm2. The metallic target exhibits both the lowest volume ablation rate under the highest irradiation conditions with almost 400 µm3/pulse and the lowest ablation threshold with 0.13 J/cm2. Ceramic PZT reaches 3.103 µm3/pulse with a threshold fluence of 0.26 J/cm2 while polymer PMMA attains 104 µm3/pulse for a 0.76 J/cm2 threshold. Pros and cons of this method are also deduced from complementary results obtained on microscopic and confocal characterizations.

© 2012 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(190.4180) Nonlinear optics : Multiphoton processes
(320.7120) Ultrafast optics : Ultrafast phenomena
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Laser Microfabrication

Original Manuscript: September 27, 2012
Revised Manuscript: November 13, 2012
Manuscript Accepted: November 26, 2012
Published: December 21, 2012

D Pietroy, Y Di Maio, B Moine, E Baubeau, and E Audouard, "Femtosecond laser volume ablation rate and threshold measurements by differential weighing," Opt. Express 20, 29900-29908 (2012)

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