[10p-W834-1~14] 3.5 Laser system and materials

▲ [10p-W834-9] Direct generation of visible vortex beams from a diode-pumped Pr³⁺:YLF laser

〇(D)Yuanyuan Ma¹, Jung-Chen Tung², Yung-Fu Chen², Katsuhiko Miyamoto^1,3, Takashige Omatsu^1,3 (1.Chiba Univ., 2.National Chiao Tung Univ., 3.Molecular Chirality Research Center)

Keywords:Optical Vortex, Pr3+:YLF crystal

Vortex beams, i.e. optical vortices (scalar vortex) and radially or azimuthally polarized (vector vortex) modes, carries a doughnut-shaped spatial profile, nonzero orbital angular momentum, and self-healing effect, and they have been widely applied in various fields, such as optical manipulation, quantum optics, laser micro-fabrication, and super-resolution laser scanning microscopes. The direct generation of such vortex beams from laser resonators should allow us to generate high quality vortex beams at high efficiency without any additional optical elements. In this work, we present the first demonstration of the direct generation of visible vortex beams from a blue diode-pumped Pr³⁺:YLF laser by employing an off-axis pumping technique.