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Proceedings Paper

N2 laser stereo-lithography
Author(s): Saburoh Satoh; Takao Tanaka; Nobuya Hayashi; Chobei Yamabe
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Paper Abstract

A number of pulsed and/or continuous wave lasers are applied in stereo-lithography. In particular, the He-Cd laser and Ar ion laser with a wavelength of 325nm and 351/364nm respectively are used as ultraviolet (UV) light source. Disadvantages of these lasers include inefficient output energy, which is less that 0.1%, large machine size, insufficient output power, and they are very expensive. In the near future, these lasers are expected to increasingly lack the requested performance for higher speed stereo- lithography systems. Moreover, there will be growing demands for lower cost apparatus. For the laser stereo- lithography, the N2 laser with cylindrical tube has been adopted to achieve a lower cost type UV light source. Because of its excellent output efficiency, it is expected to downsize the power supply and laser head, and allows air- cooling. Moreover we adopt an optical fiber system for its optics, because the N2 laser output beam divergence has an excessive. In view of this, attempts were made to develop a special design cylindrical tube as the UV light source. This paper reports the fundamental characteristics of this laser.

Paper Details

Date Published: 6 November 2000
PDF: 4 pages
Proc. SPIE 4088, First International Symposium on Laser Precision Microfabrication, (6 November 2000); doi: 10.1117/12.405746
Show Author Affiliations
Saburoh Satoh, Saga Univ. (Japan)
Takao Tanaka, Saga Univ. (Japan)
Nobuya Hayashi, Saga Univ. (Japan)
Chobei Yamabe, Saga Univ. (Japan)

Published in SPIE Proceedings Vol. 4088:
First International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Koji Sugioka; Thomas W. Sigmon, Editor(s)

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