[10a-Z23-1~8] 4.7 Quantum Optics and Nonlinear Optics

▲ [10a-Z23-8] Direct generation of ultraviolet vortex from a frequency-doubled Pr:YLF laser with an off-axis pumping geometry

〇(P)SRINIVASA RAO ALLAM¹、Katsuhiko Miyamoto^1,2、Takashige Omatsu^1,2 (1.Chiba Univ.、2.MCRC, Chiba Univ.)

キーワード：Ultraviolet vortex beam, Ultraviolet bottle beam, Intracavity SHG

we report on the first demonstration of an ultra-compact UV vortex source based on an intra-cavity frequency-doubled Pr:YLF laser with an off-axis pumping geometry. Our system with high cost-efficiency and without any diffractive optical elements should open the door towards new advanced bio-imaging and microfabrication technologies. The generated UV vortex exhibits the ‘bottle beam’ in the presence of a focusing lens and it allows us to develop fluorescence microscopes with a high 3D spatial resolution in UV region.