954 nm Raman fiber laser with multimode laser diode pumping. (3rd February 2016)

• Record Type: Journal Article
• Authors: Zlobina, E A; Kablukov, S I; Skvortsov, M I; Nemov, I N; Babin, S A
• Is Part Of: Laser physics letters. Volume 13:Number 3(2016:Mar.)
• Publication Date: 2016-02-03
• Subjects: fiber optics -- Raman laser -- graded-index fiber -- clean-up effect -- laser diode pumping; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/13/3/035102
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: CW Raman fiber laser emitting at 954 nm under direct pumping by a high-power multimode laser diode at 915 nm is demonstrated. A cavity of the laser is formed with 2.5 km-long multimode graded-index fiber and two mirrors: highly reflective fiber Bragg grating (FBG) at one side and normally cleaved fiber end at the other side. The laser generates low-index transverse modes at the Stokes wavelength with output power above 4 W at a slope efficiency above 40%. It is shown that utilization of a narrowband FBG mirror with low reflectivity instead of the cleaved fiber end with Fresnel reflection leads to stronger spectral mode selection, but the generated power is reduced in this case.