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Femtosecond laser microchannels fabrication based on electrons dynamics control using temporally or spatially shaped pulses

  • Beijing Institute of Technology
  • University of Nebraska-Lincoln

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

With ultrashort pulse durations and ultrahigh power densities, femtosecond laser presents unique advantages of high precision and high quality fabrication of microchannels in transparent materials. In our study, by shaping femtosecond laser pulse energy distribution in temporal or spatial domains, localized transient electrons dynamics and the subsequent processes, such as phase changes, can be controlled, leading to the dramatic increases in the capability of femtosecond laser microchannels fabrication. The temporally shaped femtosecond laser pulse trains can significantly enhance the material removal rate in both water-assisted femtosecond laser drilling and femtosecond laser irradiation followed by chemical etching. Besides, high-aspect-ratio and small-diameter microchannels are drilled by spatially shaped femtosecond laser pulses.

Original languageEnglish
Title of host publicationHigh-Power Lasers and Applications VII
EditorsRobert F. Walter, Ruxin Li, Upendra N. Singh
PublisherSPIE
ISBN (Electronic)9781628413397
DOIs
Publication statusPublished - 2014
EventHigh-Power Lasers and Applications VII - Beijing, China
Duration: 9 Oct 201411 Oct 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9266
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceHigh-Power Lasers and Applications VII
Country/TerritoryChina
CityBeijing
Period9/10/1411/10/14

Keywords

  • Femtosecond laser
  • electrons dynamics control
  • microchannels fabrication
  • pulse shaping

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