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

doi:10.1016/j.phpro.2012.10.076

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 journal › Article › peer-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 language	English
Pages (from-to)	577-584
Number of pages	8
Journal	Physics Procedia
Volume	39
DOIs	https://doi.org/10.1016/j.phpro.2012.10.076
Publication status	Published - 2012

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy(all)

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

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.",

keywords = "Absorption, Copper, Green laser, Laser welding, Pulsed Nd:YAG laser, SHG",

author = "Nakashiba, {Shin Ichi} and Yasuhiro Okamoto and Tomokazu Sakagawa and Sunao Takai and Akira Okada",

year = "2012",

doi = "10.1016/j.phpro.2012.10.076",

language = "English",

volume = "39",

pages = "577--584",

journal = "Physics Procedia",

issn = "1875-3884",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Micro-Welding of Copper Plate by Frequency Doubled Diode Pumped Pulsed Nd

T2 - YAG Laser

AU - Nakashiba, Shin Ichi

AU - Okamoto, Yasuhiro

AU - Sakagawa, Tomokazu

AU - Takai, Sunao

AU - Okada, Akira

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

KW - Absorption

KW - Copper

KW - Green laser

KW - Laser welding

KW - Pulsed Nd:YAG laser

KW - SHG

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DO - 10.1016/j.phpro.2012.10.076

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