Pérez Herrera, Rosa AnaRoldán Varona, PabloGalarza Galarza, MarkoSañudo-Lasagabaster Ibáñez, SilviaRodríguez Cobo, LuisLópez Higuera, José MiguelLópez-Amo Sáinz, Manuel2021-04-282021-04-2820212045-2322 (Electronic)10.1038/s41598-021-88748-whttps://academica-e.unavarra.es/handle/2454/39604A hybrid Raman-erbium random fber laser with a half-open cavity assisted by chirped artifcially controlled backscattering fber refectors is presented. A combination of a 2.4 km-long dispersion compensating fber with two highly erbium-doped fber pieces of 5 m length were used as gain media. A single random laser emission line centered at 1553.8 nm with an optical signal to noise ratio of 47 dB were obtained when pumped at 37.5 dBm. A full width at half maximum of 1 nm and a 100% confdence level output power instability as low as 0.08 dB were measured. The utilization of the new laser cavity as a temperature and strain sensor is also experimentally studied.8 p.application/pdfeng© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.Random fiber laserOutput power stabilityRaman amplificationErbium doped fiberDistributed reflectorsBackscatteringinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess