A Nd: YAG laser with a flat-top beam profile and constant divergence

✍ Scribed by W.C. Yen; C.T. Huang; H.P. Liu; L.P. Lee

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 558 KB
• Volume: 29
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(96)00041-2

✦ Synopsis

An active resonator designed especially for Nd : YAG lasers is proposed. The expected performance of this resonator is the generation of a laser beam with a flat-topped distribution and a divergence invariant under the thermal lensing effect, such that it could be applied to surface treatment without special optical or mechanical elements. The beam quality and efficiency of such a resonator are presented and discussed in comparison with a parallel-plane resonator as adopted by most industrial Nd : YAG lasers.