Radially and azimuthally polarized beams in a single transverse mode are generated from a commercially available vertical cavity surface emitting laser (VCSEL) in an external cavity with a birefringent rutile lens, of which the $c$ axis is parallel to the optical axis of the cavity, to select favorable polarization. Additionally, a vector Bessel–Gaussian beam is generated from a VCSEL, which is fabricated to oscillate with a linear polarization in a fixed direction in free running, in the same way. These results clearly show the potential ability of VCSELs to generate vector beams, which will be essential to space-division multiplexing in the future optical communication.

中文翻译：

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垂直腔表面发射激光器产生矢量束

在具有双折射金红石透镜的外腔中，从市售的垂直腔表面发射激光器（VCSEL）产生单横模的径向和方位偏振光束。 $C$轴平行于腔的光轴，以选择有利的偏振。此外，从VCSEL产生矢量贝塞尔-高斯光束，该光束被制造为以自由方式以相同的方式在固定方向上以线性偏振振动。这些结果清楚地表明了VCSEL产生矢量光束的潜在能力，这对于将来的光通信中的空分复用至关重要。