High beam quality, highly efficient radially polarized vector vortex beam has been generated in a Yb:YAG microchip laser pumped with an annular beam formed with a hollow focus lens. The output power of 2.15 W has been achieved at the absorbed pump power of 3.53 W. The optical-to-optical efficiency is 60.9%. The radially polarized vector vortex lasers working at 1030 nm, 1050 nm, 1030/1050 nm dual-wavelength depending on applied pump power. High polarization purity with degree of polarization of over 91% has been achieved for radially polarized vector vortex lasers. Our work provides an effective method for developing compact wavelength tunable, radially polarized vector vortex lasers.

在Yb：YAG微芯片激光器中泵浦了高光束质量，高效的径向偏振矢量涡旋光束，该激光器泵浦了由空心聚焦透镜形成的环形光束。在吸收的泵浦功率3.53 W时，可实现2.15 W的输出功率。光学效率为60.9％。径向偏振矢量涡流激光器的工作波长为1030 nm，1050 nm，1030/1050 nm双波长，具体取决于所施加的泵浦功率。对于径向偏振的矢量涡旋激光器，已经实现了超过91％的偏振度的高偏振纯度。我们的工作为开发紧凑的波长可调，径向偏振的矢量涡旋激光器提供了一种有效的方法。