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大功率、高效率、高消光比铒光纤多波长超荧光光源 总被引:4,自引:3,他引:1
采用改进的反射式Mach-Zehnder干涉滤波器,对双程后向结构掺铒光纤超荧光光源(DPB SFS) 分别进行光谱分割和光谱预分割,构建了两种结构的多波长超荧光光纤光源(MW SFS),波长间隔为~0.8 nm时,在1550 nm附近(1542~1559 nm)20个波长的功率波动小于0.5 dB其中前者消光比高达27 dB;后者消光比~18 dB,在泵浦光功率为72.8 mW时,最大输出功率25.3 mW,光光转换效率高达34.8%改变Mach-Zehnder干涉仪的臂长差,采用光谱预分割技术,得到1550 nm附近波长间隔~0.4 nm、消光比~16 dB的50个波长输出 相似文献
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A cw Raman laser based on a 100-m photonic crystal fibre is demonstrated with up to 3.8 W output power at the incident pump power of 12 W, corresponding to an optical-to-optical efficiency of about 31.6%.. The second order Stokes light, which is firstly reported in a cw photonic crystal fibre Raman laser, is obtained at 1183nm with an output power of 1.6 W and a slope efficiency of about 45.7%. 相似文献
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We investigate a photonic crystal fibre Raman laser using fibre Bragg grating pairs as cavity mirrors. The threshold pump power is up to 0.65 W by decreasing the cavity loss and using a photonic crystal fibre with high Raman gain coefficient. A maximum continuous-wave output power of 2. 7 W is obtained at the maximum incident pump power of 5.6 W. The corresponding optical conversion efficiency and the slope efficiency are about 48% and 56%, respectively. 相似文献
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An all-fiber Yb3+-doped double-clad fiber laser using FBGs as cavity mirrors is investigated in this paper. Continuous-wave (CW) output power of 1.18 W with defined wavelength at 1.06 um and narrow line-width of less than 0.1 nm is obtained. The slope efficiency and the maximum optical-to-optical efficiency of laser output are 68% and 51%, respectively, with respect to absorbed pump power. 相似文献
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用实验和数值模拟两种方法研究了高非线性光子晶体光纤中飞秒激光脉冲的传输特性和超连续谱的产生机理,给出了抽运脉冲在三种不同中心波长情况下输出光谱展宽并形成超连续谱的实际测量及理论模拟结果.研究表明:在零色散波长抽运时,光谱展宽以自相位调制为主,同时三阶色散的影响明显,传输脉冲在时域内出现振荡次峰.而在反常色散区抽运时,光谱展宽的初期以自相位调制为主,随后根据抽运功率的不同孤子自频移、高阶光孤子的裂变和四波混频效应会逐渐增强,进而成为光谱展宽的主要原因.与此相应,在时域中能明显看到孤子的形成和红移,飞秒传输脉
关键词:
光子晶体光纤
高非线性光子晶体光纤
飞秒脉冲激光
超连续谱 相似文献
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The simultaneous dual-band pulsed amplification is demonstrated from an Er/Yb co-doped fiber(EYDF), and consequently a high-power all-fiber single-mode 1.0/1.5 μm dual-band pulsed master oscillator power amplifier(MOPA) laser source is realized for the first time, to the best of our knowledge, based on one singlegain fiber. The simultaneous outputs at 1061 and 1548 nm of the laser source have the maximum powers of 10.7 and 25.8 W with the pulse widths of 9.5 ps and 2 ns and the pulse repetition rates of 178 and 25 MHz, respectively. This EYDF MOPA laser source is seeded by two separate preamplifier chains operating at 1.0 and 1.5 μm wavebands. The dependence of the laser output powers on the length of the large-mode area EYDF, the ratio of the powers of the two signals launched into the booster amplifier, and the wavelength of the 1 μm seed signal are also investigated experimentally. 相似文献