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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 15990–15997

Direct patterning in sub-surface of stainless steel using laser pulses

Z. L. Li, T. Liu, C. C. Khin, A. C. Tan, L. E. Khoong, H. Y. Zheng, and W. Zhou  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 15990-15997 (2010)

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This paper reports for the first time on the direct creating microcavities in sub-surface of stainless steel using a single Nd:YAG laser pulse. The low peak power density is used in the process, which is in the order of 1 MW/cm2. The formation of the microcavities in the sub-surface of stainless steel is an evidence of volume expulsion during laser-metal interaction. Direct patterning in the sub-surface of stainless steel is demonstrated by realizing a series of microcavities to form a pre-designed pattern. Potential applications of sub-surface patterning in metal, such as security marking, micro-heater, micro-insulator and micro-sensor, are discussed.

© 2010 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.3900) Materials : Metals
(220.4000) Optical design and fabrication : Microstructure fabrication
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Laser Microfabrication

Original Manuscript: May 11, 2010
Revised Manuscript: July 8, 2010
Manuscript Accepted: July 8, 2010
Published: July 13, 2010

Z. L. Li, T. Liu, C. C. Khin, A. C. Tan, L. E. Khoong, H. Y. Zheng, and W. Zhou, "Direct patterning in sub-surface of stainless steel using laser pulses," Opt. Express 18, 15990-15997 (2010)

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