期刊
OPTICS LETTERS
卷 42, 期 12, 页码 2334-2337出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.42.002334
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资金
- National Natural Science Foundation of China (NSFC) [61235008, 61405254, 61435009]
- National High Technology Research and Development Program of China [2015AA021101]
- Graduate Student Innovation Foundation of National University of Defense Technology [B150703]
- Hunan Provincial Innovation Foundation for Postgraduate [CX2015B033]
In this Letter, a high-power 1.9 -4.2 mu m supercontinuum (SC) laser source with a real all-fiber structure is reported. A 12 m length of ZBLAN fluoride fiber was used as the non-linear medium, which was pumped by a thulium-doped fiber amplifier through a firm fusion-spliced joint between silica fiber and itself. The obtained SC laser had a high spectral flatness with a maximal 10 dB bandwidth of 2090 nm spanning from 1960 to 4050 nm. A record power of 15.2W for an all-fiber mid-infrared SC laser was measured. The average spectral power density of this SC laser was as high as 7.2 mW/nm. In particular, the SC power beyond 3.0 and 3.8 mu m was 8.1 and 1.08Wwhich corresponded to a power ratio of 53.2% and 7.1%, respectively. This Letter, to the best of our knowledge, represents the brightest all-fiber mid-infrared SC laser, and provides a promising high-power pump light for SC generation in cascaded chalcogenide fibers. (C) 2017 Optical Society of America
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