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研制了一种基于可调F-P滤波器的线性波长扫描窄线宽光纤激光器。该激光器采用环形腔结构,以高增益掺Er3+光纤(Er30-4/125)作为增益介质,以保偏掺Er3+光纤(EDF08-PM)作为可饱和吸收体抑制跳模,同时结合F-P滤波器选频,获得了单频窄线宽的激光输出。通过线性调节F-P滤波器的驱动电压,实现了对激光器波长的线性扫描。在两只975nm单模激光器的双向泵浦下,实验中测得激光器阈值为15mW,最大输出功率为24.3mW,3dB线宽约为5.2kHz。当F-P滤波器在6.1~10.2V的线性电压驱动下,激光器波长的线性扫描范围为1 542.404~1 558.836nm。
A linear wavelength scanning narrow linewidth fiber laser based on an adjustable F-P filter was developed. The laser adopts a ring cavity structure and adopts high-gain Er3 + -doped fiber (Er30-4 / 125) as a gain medium and polarization maintaining Er3 + fiber (EDF08-PM) as a saturable absorber to suppress mode hopping, Frequency, obtained single-frequency narrow linewidth laser output. By linearly adjusting the drive voltage of the F-P filter, a linear sweep of the laser wavelength is achieved. Under the bidirectional pumping of two 975nm single-mode lasers, the laser threshold is 15mW, the maximum output power is 24.3mW and the 3dB linewidth is about 5.2kHz. When the F-P filter is driven by a linear voltage of 6.1-10.2V, the linear sweep range of the laser wavelength is 1 542.404-1 558.836 nm.