YAG laser system with combined beams from three oscillators and its application to materials processing

Hiroshi Miura; Shigeki Fujinaga; Toru Narikiyo; Akira Ohmori; Keiji Okino; Syuichi Watanabe

doi:10.1117/12.270176

4 April 1997 YAG laser system with combined beams from three oscillators and its application to materials processing

Hiroshi Miura, Shigeki Fujinaga, Toru Narikiyo, Akira Ohmori, Keiji Okino, Syuichi Watanabe

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270176
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

We constructed a system in which a newly developed pulse excited YAG laser oscillator of 1.5 kW average power and an integration optics were incorporated, together with two cw YAG laser oscillators of 2 kW average power, a 6-axes articulated robot and a PC. The integration optics summed up three laser beams transmitted through optical fibers and condensed to a focused spot at the focusing point. We could obtain the following results using the system. (1) The focused spot diameter for good welding quality with the integration optics could be available without changing the distance between the specimen and the optics. (2) The delay time between the pulse excited YAG laser beam and the rectangularly modulated cw YAG laser beams should not exceed the time of keyhole formation with the cw laser beams to obtain the maximum penetration depth. (3) The deepest penetration depth and the largest volume of welding could be obtained by the overhead position welding compared with the flat, horizontal and vertical position welding.

Citation Download Citation

Hiroshi Miura, Shigeki Fujinaga, Toru Narikiyo, Akira Ohmori, Keiji Okino, and Syuichi Watanabe "YAG laser system with combined beams from three oscillators and its application to materials processing", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270176

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available