| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1870394 | Physics Procedia | 2012 | 8 Pages |
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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Shin-Ichi Nakashiba, Yasuhiro Okamoto, Tomokazu Sakagawa, Sunao Takai, Akira Okada,