Pérez Herrera, Rosa AnaRoldán Varona, PabloRodríguez Cobo, LuisLópez Higuera, José MiguelLópez-Amo Sáinz, Manuel2021-04-232021-04-232021R. A. Perez-Herrera, P. Roldán-Varona, L. R. Cobo, J. M. López-Higuera and M. Lopez-Amo, 'Single Longitudinal Mode Lasers by Using Artificially Controlled Backscattering Erbium Doped Fibers,' in IEEE Access, vol. 9, pp. 27428-27433, 2021, doi: 10.1109/ACCESS.2021.3058092.2169-3536 (Electronic)10.1109/ACCESS.2021.3058092https://academica-e.unavarra.es/handle/2454/39598In this work, we propose and experimentally demonstrate a new distributed short linear cavity fiber laser. At one of the cavity ends, fabricated by a commercial femtosecond fiber laser chirped pulse amplfier, an artificially controlled backscattering erbium doped fiber section has been connected. This distributed reflector acts also as a saturable absorber, leading to the generation of tunable and switchable single longitudinal-mode laser emissions. The distributed reflector consists of 9 micro-drilled sections of about 1cm each one and randomly spread throughout 2 meters of highly doped erbium fiber. The total length of the fiber laser is 9.5 m and the laser shows a single mode behavior at all the emitted wavelengths. Using this new kind of reflecting saturable absorber, single and multiple single-mode emissions can be obtained. The achieved laser presents a pump threshold as low as 45 mW and shows up to 8 different single-mode emission lines with an optical signal to noise ratio of 45dB.6 p.application/pdfengThis work is licensed under a Creative Commons Attribution 4.0 License.Distributed amplifierErbium-doped fiber amplifierFiber laserLaser cavity resonatorinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess