High-power thulium-doped all-fibre amplified spontaneous emission sources. (26th February 2015)

• Record Type: Journal Article
• Authors: Jin, Xiaoxi; Wang, Xiong; Xu, Jiangming; Wang, Xiaolin; Zhou, Pu
• Is Part Of: Journal of optics. Volume 17:Number 4(2015:Apr.)
• Publication Date: 2015-02-26
• Subjects: superfluorescence -- infrared and far-infrared lasers -- fibre lasers -- laser amplifiers; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/4/045702
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We demonstrate high-power thulium-doped all-fibre amplified spontaneous emission (ASE) sources operating at ~2 μ m with both broadband and narrowband spectra based on thulium-doped fibre master oscillator power amplifier configuration. The maximum output power of broadband thulium-doped all-fibre ASE source reached 316 W with the spectral full width at half maximum (FWHM) of 24 nm and the slope efficiency of 53%. The maximum output power of 292 W and the FWHM of 1.5 nm were obtained with the slope efficiency of 56% in narrowband thulium-doped all-fibre ASE source. To the best of our knowledge, this is the highest output power of both broadband and narrowband all-fibre ASE sources operating at 2 μ m. Output power could be further enhanced via increasing pump power and/or employing better cooling management.