Pulse CO/sub 2/ Laser Drilling of Green Alumina Ceramic

K. Imen, S. D. Allen

Research output: Contribution to journalArticlepeer-review

Abstract

Ceramics are used as thermal conductors and electrical insulators in integrated circuit packaging. We have investigated TEA CO/sub 2/ laser drilling of green alumina ceramic sheets consisting predominantly of alumina with approximately 10% PVB (polyvinyl butyral) as the polymer binder. Experiments with 9.5 and 10.6 /spl mu/m wavelengths show that the holes made with a 9.5 /spl mu/m CO/sub 2/ laser beam, where a larger percentage of the total laser energy is deposited directly into the polymer binder, are smaller, more straight-sided and cleaner.
Original languageAmerican English
JournalIEEE Transactions on Advanced Packaging
Volume22
DOIs
StatePublished - Nov 1999
Externally publishedYes

Keywords

  • optical pulses
  • drilling
  • ceramics
  • pulsed laser deposition
  • etching
  • polymers

Disciplines

  • Physical Sciences and Mathematics

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