A Nd: YAG laser with a flat-top beam profile and constant divergence |
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| Authors: | W.C. Yen C.T. Huang H.P. Liu L.P. Lee |
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| Affiliation: | aWCY, CTH and HPL are in the Institute of Optical Science, National Central University, Chung-Li, Taiwan 320, Republic of China;bLPL is with Q-Laser Systems Inc, Shu-Lin, Taiwan 238, Republic of China |
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| Abstract: | 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. |
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| Keywords: | flat-top constant divergence lasers (Nd:YAG) |
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