Micro-Welding of Copper Plate by Frequency Doubled Diode Pumped Pulsed Nd: YAG Laser

Shin Ichi Nakashiba, Yasuhiro Okamoto, Tomokazu Sakagawa, Sunao Takai, Akira Okada

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A pulsed laser of 532 nm wavelength with ms range pulse duration was newly developed by second harmonic generation of diode pumped pulsed Nd:YAG laser. High electro-optical conversion efficiency more than 13% could be achieved, and 1.5 kW peak power green laser pulse was put in optical fiber of 100 μm in diameter. In micro- welding of 1.0 mm thickness copper plate, a keyhole welding was successfully performed by 1.0 kW peak power at spot diameter less than 200 μm. The frequency doubled pulsed laser improved the processing efficiency of copper welding, and narrow and deep weld bead was stably obtained.

Original languageEnglish
Pages (from-to)577-584
Number of pages8
JournalPhysics Procedia
Volume39
DOIs
Publication statusPublished - 2012

Keywords

  • Absorption
  • Copper
  • Green laser
  • Laser welding
  • Pulsed Nd:YAG laser
  • SHG

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Micro-Welding of Copper Plate by Frequency Doubled Diode Pumped Pulsed Nd: YAG Laser'. Together they form a unique fingerprint.

Cite this