标题： 从宽孔径激光二极管泵浦的薄片固态激光器中自发生成涡旋阵列光束 显示英文标题

标题： Spontaneous Generation of Vortex Array Beams from a Thin-Slice Solid-State Laser with Wide-Aperture Laser-Diode Pumping

摘要： 我们研究了在宽孔径激光二极管端泵浦的薄片固体激光器中复杂的激光模式形成。 径向和矩形涡旋阵列分别在对称和非对称泵浦光束轮廓的控制下形成。 这些涡旋中的大多数表现出单频振荡，这是由激光非线性辅助的几乎简并模式的横向模锁自发过程产生的。 由大量涡旋组成的单频矩形阵列光束，例如紧密排列的36或46个涡旋像素，被产生出来，这些涡旋来源于由非对称泵浦激发的Ince-Gaussian模式。 显示英文摘要

摘要： We studied complex lasing pattern formations in a thin-slice solid-state laser with wide-aperture laser-diode end-pumping. Radial and rectangular vortex arrays were found to be formed in a controlled fashion with symmetric and asymmetric pump beam profiles, respectively. Most of these vortices exhibited single-frequency oscillations arising from a spontaneous process of transverse mode locking of nearly degenerate modes assisted by the laser nonlinearity. Single-frequency rectangular array beams consisting of a large number of vortices, e.g., closely packed 36 or 46 vortex pixels, were generated, originating from Ince-Gaussian modes excited by the asymmetric pumping.