Generation of a Purely Single Transverse Mode Vortex Beam from a He-Ne Laser Cavity with a Spot-Defect Mirror
Generation of a Purely Single Transverse Mode Vortex Beam from a He-Ne Laser Cavity with a Spot-Defect Mirror
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DOI：
10.1155/2012/359141
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发表时间：
2012
影响因子：
1.7
通讯作者：
Ken'ichi Kano;Y. Kozawa;S. Sato
中科院分区：
文献类型：
--
作者：
Ken'ichi Kano;Y. Kozawa;S. Sato
将激光脉冲聚焦在传统介质反射镜表面，制备了光斑缺陷反射镜。这些反射镜被用作氦氖激光腔的后视镜，用于产生涡流光束。光斑直径为50𝜇m的空腔产生的光束强度分布与理论非常吻合。综合分析光强分布、光束质量因子和干涉图样，得到的光束为纯单横模LG01光束。
Spot-defect mirrors were fabricated by focusing laser pulses on the surface of conventional dielectric mirrors. These mirrors were used as rear mirrors of a He-Ne laser cavity for generating a vortex beam. The intensity distribution of the beam generated from the cavity with a spot diameter of 50 𝜇m was in excellent agreement with theory. Comprehensive analysis of the intensity distribution, the beam quality factor, and the interference pattern revealed that the beam obtained was a purely single transverse mode LG01 beam.