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Proceedings Paper

Nd-glass laser for deep-penetration welding and hardening
Author(s): Serguei V. Kayukov; Sergey I. Yaresko; Pavel Anatolievich Mikheyev
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Paper Abstract

Pulsed Nd-glass lasers usually have low beam quality (200 - 300 mm-mrad), and are used only for surface hardening of metals. However, high pulse energy make them feasible for deep penetration welding if their beam quality could be improved. We investigated beam properties of Nd-glass laser with unstable resonator with semitransparent output coupler (URSOC). We had found that beam divergence of the laser with URSOC was an order of magnitude smaller than that of the laser with stable resonator. The achieved beam quality (40 - 50 mm-mrad) permitted to perform deep penetration welding with the aspect ratio of approximately 8. For beam divergence of 3 mrad melt depth of 6.3 mm was achieved with the ratio of depth to pulse energy of 0.27 mm/J.

Paper Details

Date Published: 14 April 2000
PDF: 5 pages
Proc. SPIE 3929, Solid State Lasers IX, (14 April 2000); doi: 10.1117/12.382770
Show Author Affiliations
Serguei V. Kayukov, P.N. Lebedev Physical Institute (Russia)
Sergey I. Yaresko, P.N. Lebedev Physical Institute (Russia)
Pavel Anatolievich Mikheyev, P.N. Lebedev Physical Institute (Russia)


Published in SPIE Proceedings Vol. 3929:
Solid State Lasers IX
Richard Scheps, Editor(s)

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