期刊
OPTICS COMMUNICATIONS
卷 182, 期 1-3, 页码 205-208出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0030-4018(00)00804-X
关键词
laser beams; phase elements
类别
A novel method for forming pure helical laser beams of pre-determined helicity is presented. It is mainly based on replacing one of the laser mirrors with a spiral phase element. The basic principles along with experimental results using a CO2 laser are described. (C) 2000 Elsevier Science B.V. All rights reserved.
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