Studies of frequency-tripled nd:yag LASER in laser structuring process

Bin Zhang, Kam Chuen Yung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

As demand for a higher densities and more flexible technology in the fabrication of finer lines/spaces on PCB boards, a new technology -laser structuring - has emerged in recent years. In this work, the frequency-tripled Nd:YAG laser is selected as the laser source in laser structuring. This laser is often used in miniaturization machining. This work discusses the feasibility of laser structuring as a new method in PCB fine lines/spaces fabrication. The essential processes in laser structuring such as tin electroplating process, laser direct structuring process and etching process are discussed here. Some important parameters are studied in detail to find out their effects on the laser structuring results including the electroplating parameters - electroplating time and uniformity of tin layer, the laser parameters - laser power, numbers of repetitions, repetition rate and bite size, the etching parameters - etching time and the cross section profile of spaces, and so on. The smallest width of fine line achievable by laser structuring with frequency tripled Nd:YAG laser is also studied in this work. The width of fine line is influenced not only by laser parameters, but also by etching process.
Original languageEnglish
Title of host publication24th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2005 - Congress Proceedings
Pages315-324
Number of pages10
Publication statusPublished - 1 Dec 2005
Event24th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2005 - Miami, FL, United States
Duration: 31 Oct 20053 Nov 2005

Conference

Conference24th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2005
Country/TerritoryUnited States
CityMiami, FL
Period31/10/053/11/05

Keywords

  • Frequency-tripled Nd
  • Laser ablation
  • Laser structuring
  • YAG laser

ASJC Scopus subject areas

  • Engineering(all)

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