Generation of higher-order vortex modes from a Pr3+:YLF laser source

A. Srinivasa Rao; Takuya Morohashi; Taku Miike; Katsuhiko Miyamoto; Takashige Omatsu

doi:10.1117/12.2658797

8 December 2022 Generation of higher-order vortex modes from a Pr³⁺:YLF laser source

A. Srinivasa Rao, Takuya Morohashi, Taku Miike, Katsuhiko Miyamoto, Takashige Omatsu

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 124790F (2022) https://doi.org/10.1117/12.2658797
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

Herein, we report on the direct generation of red (640 nm) and orange (607 nm) higher-order LG modes from the Pr³⁺:LiYF₄ (Pr³⁺:YLF) laser with an intra-cavity plano-convex spherical lens. The strong spherical aberration of the intra-cavity lens allows the oscillation of red higher-order LG modes represented by the coherent superposition of degenerated LG modes with positive and negative orbital angular momentum (OAM), |ℓ|≤31. A desired higher-order LG mode is selectively generated from the laser cavity simply by adjusting an on-axis position of the intra-cavity lens. Also, the system enables the generation of orange higher-order LG modes coherently superposed by degenerated positive and negative LG modes with |ℓ|≤17.

Citation Download Citation

A. Srinivasa Rao, Takuya Morohashi, Taku Miike, Katsuhiko Miyamoto, and Takashige Omatsu "Generation of higher-order vortex modes from a Pr³⁺:YLF laser source", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 124790F (8 December 2022); https://doi.org/10.1117/12.2658797

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