[20a-211B-1~8] 4.8 Quantum Optics and Nonlinear Optics

▼ [20a-211B-7] Generation of multiple OAM states from an optical vortex parametric oscillator

〇(D)Roukuya Mamuti¹、Shigeki Nishida¹、Katsuhiko Miamoto^1,2、Takashige Omatsu^1,2 (1.Chiba University、2.Molecular Chirality Research Center)

キーワード：optical vortices, nonlinear optics, optical parametric oscillation

Helical light beams, i.e., optical vortices, carry an orbital angular momentum (OAM), characterized by an azimuthal phase term, , where is a topological charge andis the azimuthal angle. Optical vortices have been attracting much attention in a variety of research fields, for instance, material processing for chiral structured materials, optical trapping and manipulation, and microscopy with high spatial resolution. The above-mentioned applications strongly desire controllable OAM states versatility to optical vortex sources.
In this presentation, we report on the first demonstration of the selective generation of multiple OAM states with =-2~4, including an up-converted and negative OAM states, from an optical vortex-pumped non-critical phase matching LiB₃O₅ (NCPM-LBO) optical parametric oscillator (OPO) with a singly resonant cavity configuration by simply tuning the wavelengths of signal and idler outputs.