Yb‐doped large‐mode‐area aluminosilicate laser fibre fabricated by chelate precursor doping technique. Issue 23 (1st November 2016)

• Record Type: Journal Article
• Authors: Peng, Kun; Wang, Zhen; Zhan, Huan; Ni, Li; Gao, Cong; Wang, Xiaolong; Wang, Yuying; Wang, Jianjun; Jing, Feng; Lin, Aoxiang
• Is Part Of: Electronics letters. Volume 52:Issue 23(2016)
• Page Start: 1942
• Page End: 1944
• Publication Date: 2016-11-01
• Subjects: ytterbium -- aluminium compounds -- doping -- optical fibre fabrication -- optical fibre testing -- electron probe analysis -- secondary ion mass spectroscopy -- laser beams -- optical fibre amplifiers; AlSiO:Yb -- power 1 kW -- efficiency 81.0 percent -- slope efficiency -- laser output -- two‐stage master oscillator power amplifier system -- time‐of‐flight secondary ion mass spectrometry -- electron probe microanalysis -- fibre testing -- numerical aperture -- homogeneous large‐core preform -- gas flow control system -- high‐purity materials -- chelate precursor doping technique -- large mode area aluminosilicate laser fibre; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.3350
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A modified chelate precursor doping technique using high‐purity materials and accurate gas flow control system is proposed to fabricate an efficient ytterbium‐doped large‐mode‐area silica fibre for laser development. This technique enables to make homogeneous large‐core preform with symmetrical shape, relatively low numerical aperture of ∼0.06 and large‐core size of over 4 mm. Homemade preform was drawn into standard fibre for testing and fully characterised by electron probe microanalysis and time‐of‐flight secondary ion mass spectrometry. On the basis of two‐stage master oscillator power amplifier system, 1 kW laser output with slope efficiency of 81.0% was realised at ∼1064 nm.