期刊
OPTICS EXPRESS
卷 26, 期 9, 页码 11850-11858出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.011850
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资金
- National Natural Science Foundation of China (NSFC) [91750108, 61635006, 91750115]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and Science and Technology Commission of Shanghai Municipality [16520720900]
- Shuguang Program - Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [16SG35]
Generation of high-order modes with high quality is important for the application of cylindrical vector beams in fibers. We experimentally demonstrated high-order LP11 mode generation and amplification with a broad bandwidth in an all few-mode fiber laser. A wavelength-division-multiplexing (WDM) mode selective coupler (MSC) is proposed to achieve efficient mode conversion from LP01 mode to LP11 mode, but also combine high-order LP11 modes at the wavelengths of 980/1550 nm. To the best of our knowledge, this is the first report on the high-order mode oscillation in an all few-mode fiber laser. LP11 mode and cylindrical vector beams including radially and azimuthally polarized beams are obtained with high modal purity. The purity of the generated high-order modes are all in excess of 95%. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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