abstract

• We report a linear cavity all-fiber passive Q-switched thulium-doped fiber laser operating at the 2 μm wavelength range. The laser configuration is based on a thulium-doped fiber used as a gain medium and an unpumped segment of holmium-doped fiber which acts as a fiber saturable absorber. The cavity is formed by a fiber optical loop mirror and the flat end facet of the holmium-doped fiber. The fiber segments as saturable absorber is a 1-m long single mode doubleclad holmium-doped fiber. Q-switched pulses are obtained at the wavelength of 2024.5 nm with a pulse width of 1.1 μs. The pulse repetition rate increases as a linear function of the applied pump power. The maximum pulse repetition rate of 100 kHz was obtained with a pump power of 2.4 W. © 2018 SPIE.

authors

• Alaniz-Baylón J.
• Bello Jiménez Miguel Ángel
• Bravo-Huerta E.
• Durán-Sánchez M.
• Hernández-Arriaga M.V.
• Ibarra-Escamilla B.
• Kuzin E.A.
• Posada-Ramírez B.
• Santiago-Hernández H.
• Álvarez-Tamayo R.I.

publication date

• 2018-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: CB-237855  Grant

published in

• Proceedings of SPIE - The International Society for Optical Engineering  Proceedings

keywords

• Fiber lasers; Q-switched fiber laser; Sagnac interferometer; Thulium-doped fiber Fiber lasers; Holmium; Optical pumping; Pulse repetition rate; Q switching; Saturable absorbers; Thulium; Laser configuration; Passive Q-switched; Passively Q-switched; Q-switched fiber lasers; Q-switched pulse; Sagnac interferometer; Thulium-doped fibers; Wavelength ranges; Fibers

Digital Object Identifier (DOI)

• 10.1117/12.2288431

start page

end page

volume

• 10512