Adaptive laser beam forming for laser shock micro-forming for 3D MEMS devices fabrication

Ran Zou, Shuliang Wang, Mohan Wang, Shuo Li, Sheng Huang, Yankun Lin, Kevin P. Chen*

*Corresponding author for this work

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

Abstract

Laser shock micro-forming is a non-thermal laser forming method that use laser-induced shockwave to modify surface properties and to adjust shapes and geometry of work pieces. In this paper, we present an adaptive optical technique to engineer spatial profiles of the laser beam to exert precision control on the laser shock forming process for free-standing MEMS structures. Using a spatial light modulator, on-target laser energy profiles are engineered to control shape, size, and deformation magnitude, which has led to significant improvement of the laser shock processing outcome at micrometer scales. The results presented in this paper show that the adaptive-optics laser beam forming is an effective method to improve both quality and throughput of the laser forming process at micrometer scales.

Original languageEnglish
Title of host publicationPacific Rim Laser Damage 2016
Subtitle of host publicationOptical Materials for High-Power Lasers
EditorsTakahisa Jitsuno, Wolfgang Rudolph, Jianda Shao
PublisherSPIE
ISBN (Electronic)9781510603578
DOIs
Publication statusPublished - 2016
Event6th Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers, PLD 2016 - Yokohama, Japan
Duration: 18 May 201620 May 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9983
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference6th Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers, PLD 2016
Country/TerritoryJapan
CityYokohama
Period18/05/1620/05/16

Keywords

  • Laser shockwave generation
  • MEMS
  • adaptive optics
  • laser shock forming
  • spatial light modulator

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