Generation of hollow scalar and vector beams using a spot-defect mirror
Generation of hollow scalar and vector beams using a spot-defect mirror
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DOI：
10.1364/josaa.27.002072
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发表时间：
2010-09-01
影响因子：
1.9
通讯作者：
Sato, Shunichi
中科院分区：
文献类型：
--
作者：
Ito, Akihiko;Kozawa, Yuichi;Sato, Shunichi
通过使用具有低反射率点的镜子来抑制低阶横模的振荡，演示了标量和矢量空心光束的生成。作为标量光束，从侧面泵浦 Nd: 钇铝石榴石激光腔观察到了几个空心拉盖尔高斯光束。强度分布与理论强度分布非常吻合。绕光轴的相前变化被证实是螺旋形的。此外，还从同一腔观察到拉盖尔高斯矢量光束和贝塞尔高斯矢量光束。除了强度分布的验证之外，偏振图案测量还证实光束沿着方位角方向具有旋转偏振分布，正如理论预测的那样。 (C) 2010 美国光学学会
Generation of both scalar and vector hollow beams was demonstrated by using a mirror with a low-reflectivity spot to suppress the oscillation of lower order transverse modes. As scalar beams, several hollow LaguerreGaussian beams have been observed from a side-pumped Nd: yttrium aluminum garnet laser cavity. The intensity profiles were in an excellent agreement with theoretical ones. The phase front variation around the optical axis was verified to be spiral. Furthermore, both Laguerre-Gaussian and Bessel-Gaussian vector beams have been also observed from the identical cavity. In addition to the verification of intensity profiles, polarization pattern measurement confirmed that the beams had revolving polarization distributions along the azimuthal direction as theoretically predicted. (C) 2010 Optical Society of America