Er^(3+)-Yb^(3+) Co-Doped Fiber Ring and Line Laser

Er3+-Yb3+ co-doped fiber of 2 m long is used as the laser gain medium. Two fiber lasers with different structures have been set up, one is the line cavity fiber laser with the dielectric mirror being replaced by an all-fiber reflecting mirror,the other is the ring cavity all-fiber laser. Both set-ups have achieved lasing operation at the wavelength of 1.53 μm. Pumped by the 1 064 nm light from all-solid-state Nd ∶YAG laser, the two fiber lasers at 1 530 nm are operational. Their output powers are 7.8 mW and 2 mW with 130 mW and 160 mW pump powers.

窄线宽高信噪比可调谐掺Er^(3+)光纤激光器

基于偏振态调谐原理,利用多个偏振控制器在环形腔掺Er3+光纤激光器中实现了连续可调谐、窄线宽、高信噪比的单频激光输出·连续调谐宽度达22nm(1538~1560nm),3dB谱线宽度小于0.1nm,光信号-自发辐射噪音比大于45dB,最大输出功率约1mW·在10~50mW泵浦功率范围内,输出功率波动幅度小于1dB·在室温下,工作数十个小时,中心波长漂移小于0.05nm·

宽带可调谐掺Yb^(3+)光纤环形腔激光器

讨论了利用腔内偏振控制器(PC)在掺Yb3+光纤激光器中实现连续可调谐激光输出的机理,采用976nm半导体激光器(LD)作为抽运源,高掺杂浓度掺Yb3+光纤作为增益介质,调整腔内PC,得到连续调谐宽度达20nm(1030～1050nm)、线宽小于0.2nm的输出光脉冲,激光阈值为40mW。在输入功率为110mW、输出耦合比为90∶10时,最大输出功率为6.5mW,斜率效率为10%。与其他结构光纤激光器相比,这种全光纤结构具有更高的效率和更好的稳定性,且在整个调谐宽度范围内,激光输出功率具有很好的平坦度。