Ibarra-Escamilla, B and Duran-Sanchez, M and Alvarez-Tamayo, R I and Posada-Ramirez, B and Kuzin, E A and Das, Shyamal and Dhar, Anirban and Pal, Mrinmay and Paul, Mukul Chandra and Kir'yanov, A V (2019) Switchable and dual-wavelength self-Q-switched fiber laser based on a homemade Er/Yb double clad fiber and polarization maintaining fiber Bragg grating. Laser Physics, 29 (1). Art No. ISSN 1054-660X

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We report an experimental study on the self-Q-switched operation of a linear cavity fiber laser based on a homemade Er/Yb double clad fiber as gain medium. The parameters of the self-Q-switched pulses depend on the active fiber length of 2, 3, and 4 m. With a maximum fiber length of 4 m, stable self-Q-switched pulses are obtained for the whole 976 nm pump range, with a minimum pulse duration of 1.24 mu s and a maximum repetition rate of 92.57 kHz. When the fiber length is shortened to 2 m, the range of the pump power level, at which the self-Q-switched operation is attained, is significantly diminished. Besides, dual-wavelength and switchable single-wavelength laser operations of the fiber laser are achieved by using a polarization maintaining fiber Bragg grating as spectral filter. Laser wavelengths at 1536.7 and 1537.1 nm with a line-width of 0.4 nm are obtained. The maximum average output power for the Q-switched laser operating in the dual-wavelength regime is 472 mW.

Item Type: Article
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 14 Nov 2019 09:36
Last Modified: 14 Nov 2019 09:36
URI: http://cgcri.csircentral.net/id/eprint/4602

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