Red and orange vortex Pr3+ fibre laser using a mode converting output coupler

William R. Kerridge-Johns; A. Srinivasa Rao; Yasushi Fujimoto; Takashige Omatsu

doi:10.1117/12.2648839

15 March 2023 Red and orange vortex Pr3+ fibre laser using a mode converting output coupler

William R. Kerridge-Johns, A. Srinivasa Rao, Yasushi Fujimoto, Takashige Omatsu

Proceedings Volume 12436, Complex Light and Optical Forces XVII; 124360G (2023) https://doi.org/10.1117/12.2648839
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Much research has been performed into applications of visible vortex Laguerre-Gaussian modes, including chiral material fabrication. These will demand compact, robust sources at a range of emission wavelengths. We have developed an ultracompact vortex laser source with a blue (442nm) diode pumped Pr3+ doped water-proof fluoro-aluminate glass (Pr:WPFGF) fibre laser, emitting red (638nm) and, for the first time, orange (612nm) vortex modes, in addition to balanced dual wavelength emission. The laser uses a standard microscope slide as an interferometric output coupler to convert the internal Gaussian mode into a vortex output, yielding high quality first order vortex modes in a compact setup. We additionally demonstrate the broad (∼5 nm) emission bands in the orange (610 nm), red (637 nm) and infrared regions (698 nm), with the potential for green (530 nm) and cyan (485 nm) emission.

Conference Presentation

Citation Download Citation

William R. Kerridge-Johns, A. Srinivasa Rao, Yasushi Fujimoto, and Takashige Omatsu "Red and orange vortex Pr3+ fibre laser using a mode converting output coupler", Proc. SPIE 12436, Complex Light and Optical Forces XVII, 124360G (15 March 2023); https://doi.org/10.1117/12.2648839

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