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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 22 — Nov. 15, 2013
  • pp: 4613–4616

Etching rate enhancement by shaped femtosecond pulse train electron dynamics control for microchannels fabrication in fused silica glass

Pengjun Liu, Lan Jiang, Jie Hu, Xueliang Yan, Bo Xia, and Yongfeng Lu  »View Author Affiliations

Optics Letters, Vol. 38, Issue 22, pp. 4613-4616 (2013)

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The dependence of the etching rate on the ultrafast pulse shaping is observed when microchannels are fabricated in fused silica glass using the method of femtosecond laser irradiation followed by chemical etching. In comparison with the conventional femtosecond pulses, the temporally shaped pulse trains can greatly enhance the etching rate under the same processing conditions. The enhancement is mainly attributed to the localized transient electron dynamics control by shaping the ultrafast pulse, resulting in higher photon absorption efficiency and uniform photomodification zone. Furthermore, processing parameters, including pulse delay and pulse energy distribution ratio, have also been investigated to optimize microchannels fabrication.

© 2013 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Optical Design and Fabrication

Original Manuscript: August 1, 2013
Revised Manuscript: September 23, 2013
Manuscript Accepted: October 3, 2013
Published: November 6, 2013

Pengjun Liu, Lan Jiang, Jie Hu, Xueliang Yan, Bo Xia, and Yongfeng Lu, "Etching rate enhancement by shaped femtosecond pulse train electron dynamics control for microchannels fabrication in fused silica glass," Opt. Lett. 38, 4613-4616 (2013)

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