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 language | English |
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Pages (from-to) | 577-584 |
Number of pages | 8 |
Journal | Physics Procedia |
Volume | 39 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- Absorption
- Copper
- Green laser
- Laser welding
- Pulsed Nd:YAG laser
- SHG
ASJC Scopus subject areas
- Physics and Astronomy(all)