Optical fiber microstructuration for strengthening single-mode laser operation in high power regime

Aurélien Benoit; Romain Dauliat; Kay Schuster; Stephan Grimm; Raphaël Jamier; François Salin; Philippe Roy

doi:10.1117/1.OE.53.7.071817

27 February 2014 Optical fiber microstructuration for strengthening single-mode laser operation in high power regime

Aurélien Benoit, Romain Dauliat, Kay Schuster, Stephan Grimm, Raphaël Jamier, François Salin, Philippe Roy

Author Affiliations +

Optical Engineering, Vol. 53, Issue 7, 071817 (February 2014). https://doi.org/10.1117/1.OE.53.7.071817

Abstract

We propose an in-depth investigation of all-solid microstructured optical fibers for the development of very large mode area (VLMA) fiber lasers. The inner cladding microstructure of these VLMA fibers is carefully optimized in order to get a robust single-mode laser operation in the high power regime. We describe the numerical approach used to devise a novel kind of fiber structures, the core of which should be larger than 50 μm while showing an improved single-mode emission compared to that of the state-of-the-art large pitch fibers. With the aim of overpassing the limitations of chemical vapor deposition techniques, we opted for a manufacturing process called Repusil, based on the sintering and vitrification of doped powders. Then, our opto-geometrical considerations result from the optical properties offered by this method and the use of the stack and draw. Finally, we present our very first fabrication for the proposed all-solid microstructured fibers in which a laser emission of 52 W in a continuous wave regime was obtained.

Citation Download Citation

Aurélien Benoit, Romain Dauliat, Kay Schuster, Stephan Grimm, Raphaël Jamier, François Salin, and Philippe Roy "Optical fiber microstructuration for strengthening single-mode laser operation in high power regime," Optical Engineering 53(7), 071817 (27 February 2014). https://doi.org/10.1117/1.OE.53.7.071817

Published: 27 February 2014

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