In this paper, Europium Oxide (Eu₂O₃) is used as a saturable absorber (SA) to produce Q-switched and mode-locked pulses in an erbium-doped fiber laser (EDFL) cavity. The Eu₂O₃ was synthesized using casting technique and the resulting Eu₂O₃ thin film was introduced between two optical fiber ferrule connectors to form a SA. Then the SA was positioned in the EDFL ring cavity. A stable Q-switched operation was achieved by controlling the loss and gain of the cavity. As the pumping power was increased from 84.0 mW to 125.0 mW, the repetition frequency increased from 60.1 kHz to 68.6 kHz and pulse width reduced from 4.5 μs to 3.6 μs respectively. The Q-switched EDFL was operating at the center wavelength of 1568 nm, had a 162 nJ maximum pulse energy and 10.24% slope efficiency. Adding a 100 m SMF in the ring cavity initiated a self-starting mode-locked EDFL and the pulses remained stable within a range of 104.6 to 145.8 mW pump power. At the threshold pump power of 104.6 mW, the mode-locked EDFL operated at a central wavelength of 1565 nm with a repetition rate of 1.8 MHz and a pulse width of 3.51 ps. The results show that Eu₂O₃ can be deployed as a SA for both Q-switching and mode locking generations.

在本文中，氧化Euro（Eu ₂ O ₃）被用作可饱和吸收剂（SA），以在掺-光纤激光器（EDFL）腔中产生Q开关和锁模脉冲。欧盟₂ ö ₃是使用铸造技术合成，将所得的Eu ₂ ö ₃在两个光纤插芯连接器之间引入薄膜以形成SA。然后将SA放置在EDFL环形腔中。通过控制腔体的损耗和增益，可以实现稳定的Q开关操作。随着泵浦功率从84.0 mW增加到125.0 mW，重复频率从60.1 kHz增加到68.6 kHz，脉冲宽度从4.5μs减小到3.6μs。调Q的EDFL工作在1568 nm的中心波长，最大脉冲能量为162 nJ，斜率效率为10.24％。在环形腔中添加100 m SMF会启动自启动锁模EDFL，脉冲在104.6至145.8 mW的泵浦功率范围内保持稳定。在104.6 mW的阈值泵浦功率下，锁模EDFL在1565 nm的中心波长下工作，重复率为1。8 MHz和3.51 ps的脉冲宽度。结果表明，Eu₂ O ₃可以部署为Q交换和模式锁定生成的SA。