论文部分内容阅读
采用闪耀光栅作为色散元件,构建了前向、后向输出两种结构的可调谐掺Yb3+光子晶体光纤激光器,并对其输出特性进行了分析研究。在抽运功率5.75W时,前向输出结构实现了1050.6~1110.2 nm的连续调谐输出,光谱线宽约0.1 nm,边模抑制比大于44 dB。在调谐激光波长为1085 nm时,得到最高输出功率677 mW。结构改进的后向输出结构的可调谐输出结构在抽运功率4.43 W,调谐波长1075 nm,实现了2.21 W的功率输出,斜率效率为73%;调谐范围50.9 nm(1042.1~1093 nm),光谱线宽小于0.08 nm,边模抑制比大于50 dB。两种结构的可调谐激光器输出均为线偏振光,偏振度大于89.5%。
Using blazed grating as dispersive element, a tunable Yb3 + photonic crystal fiber laser with two structures of forward and backward output is constructed, and its output characteristics are analyzed. At pumping power of 5.75W, the forward output structure achieves a continuous tuned output of 1050.6 ~ 1110.2 nm with a spectral linewidth of about 0.1 nm and a side mode suppression ratio of greater than 44 dB. At a tunable laser wavelength of 1085 nm, a maximum output power of 677 mW was obtained. The tunable output structure with structurally improved backward output structure achieves a power output of 2.21 W with a pumping power of 4.43 W and a tuning wavelength of 1075 nm, with a slope efficiency of 73%, a tuning range of 50.9 nm (1042.1 to 1093 nm), a spectrum The linewidth is less than 0.08 nm and the side mode rejection ratio is greater than 50 dB. The tunable laser outputs of both configurations are linearly polarized and have a polarization greater than 89.5%.