Visible and Infrared Sources based on Three-Level Ytterbium-doped Fiber Lasers

Boullet, Johan; Bello-Doua, Ramatou; Dubrasquet, R.; Traynor, Nicholas; Lecaplain, C.; Hideur, Ammar; Lhermite, Jérôme; Machinet, Guillaume; Médina, Capucine; Cormier, Éric

doi:10.1364/filas.2011.fthc5

Cited by 3 publications

(1 citation statement)

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“…Such laser sources can be used for core-pumping of Ytterbium-doped short fiber oscillators and amplifiers [1], [2], [3] or for specific applications in biomedicine such as twophoton microscopy [4]. These laser sources can also give access to pure blue or blue/green wavelengths between 450 nm and 500 nm after second harmonic generation (SHG) [5], [6], replacing bulky and inefficient Argon ion laser. The 3levels laser transition 2 F5/2 2 F7/2 of the Yb 3+ ion has already This work was supported in part by the Agence Nationale de la Recherche (NEODUV ANR-19-CE24-0029) and the Région Normandie (PICODUV Project).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Nd-Doped LMA Fibers for High-Power Laser Emission Near 915 nm

Florentin,

Corre,

Robin

et al. 2024

IEEE Photonics J.

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We report on the development of low numerical aperture (NA) Nd-doped large mode area (LMA) fibers with optimized core/clad geometry to achieve high-power laser emission near 915 nm while maintaining near diffraction-limited output beam. The influence of clad-to-core ratio on the detrimental amplified spontaneous emission (ASE) at 1050 nm and on the beam quality was studied experimentally in different amplifier configurations. We also show that bending the Nd-doped LMA fiber to a precise radius of curvature significantly improves the overall laser performances of these fibers by limiting both higher-order modes and spurious ASE at 1050 nm. The possibility of all-fiber multi-stages amplifier configurations with diffraction-limited output beam is finally discussed.

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