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Passively Mode-Locked Fiber Laser with WS2/SiO2 Saturable Absorber Fabricated by Sol-Gel Technique.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-19 , DOI: 10.1021/acsami.0c05318 Sicong Liu 1 , Ruidong Lv 2 , Yonggang Wang 1 , Jiang Wang 1 , Yun Wang 1 , Huizhong Wang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-19 , DOI: 10.1021/acsami.0c05318 Sicong Liu 1 , Ruidong Lv 2 , Yonggang Wang 1 , Jiang Wang 1 , Yun Wang 1 , Huizhong Wang 1
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High-performance ultrafast fiber lasers require saturable absorbers (SAs) of high optical damage threshold and high operation stability. Here, the optical properties and application of the WS2/SiO2 SA prepared by the sol–gel method are reported. SiO2 prepared by sol–gel technique has similar properties to fiber in ultrafast fiber lasers, such as mechanical strength, refractive index, optical transmission, and absorption. For the SA device by the sol–gel method combined with WS2 material, not only will the additional scattering loss not be introduced, but also, the damage threshold of the SA device can be effectively increased. Furthermore, SA material is wrapped by SiO2, which insulates the influence of the external environment. Based on the first preparation of the WS2/SiO2 glass SA, stable soliton pulses are obtained in ytterbium-doped fiber lasers (YDFLs) with a pulse width of 58 ps, an average output power of 56.8 mW, and a repetition rate of 19.03 MHz. In addition, a stable mode-locked operation with a pulse width of 325 fs and an output power of 39.6 mW is also achieved in an erbium-doped fiber laser (EDFL). These results demonstrate that the WS2/SiO2 glass prepared by the sol–gel method can significantly increase laser output power and shorten pulse width in the fiber laser, which provides a new opportunity for the traditional preparation method of the SA device.
中文翻译：
溶胶/凝胶技术制造的具有WS2 / SiO2饱和吸收体的无源锁模光纤激光器。
高性能超快光纤激光器需要具有高光学损伤阈值和高操作稳定性的可饱和吸收体（SA）。在这里，报道了通过溶胶-凝胶法制备的WS 2 / SiO 2 SA的光学性质和应用。通过溶胶-凝胶技术制备的SiO 2具有与超快光纤激光器中的光纤相似的性能，例如机械强度，折射率，光学透射率和吸收率。对于通过溶胶-凝胶法结合WS 2材料的SA设备，不仅不会引入额外的散射损耗，而且还可以有效地提高SA设备的损坏阈值。此外，SA材料被SiO 2包裹，从而隔离了外部环境的影响。基于WS 2 / SiO 2玻璃SA的首次制备，在掺width光纤激光器（YDFL）中获得了稳定的孤子脉冲，其脉冲宽度为58 ps，平均输出功率为56.8 mW，重复频率为19.03 MHz。另外，在掺ped光纤激光器（EDFL）中，还可以实现脉冲宽度为325 fs且输出功率为39.6 mW的稳定锁模操作。这些结果表明，通过溶胶-凝胶法制备的WS 2 / SiO 2玻璃可以显着提高激光器的输出功率并缩短光纤激光器的脉冲宽度，这为SA器件的传统制备方法提供了新的机会。
更新日期：2020-07-01
中文翻译：
溶胶/凝胶技术制造的具有WS2 / SiO2饱和吸收体的无源锁模光纤激光器。
高性能超快光纤激光器需要具有高光学损伤阈值和高操作稳定性的可饱和吸收体（SA）。在这里，报道了通过溶胶-凝胶法制备的WS 2 / SiO 2 SA的光学性质和应用。通过溶胶-凝胶技术制备的SiO 2具有与超快光纤激光器中的光纤相似的性能，例如机械强度，折射率，光学透射率和吸收率。对于通过溶胶-凝胶法结合WS 2材料的SA设备，不仅不会引入额外的散射损耗，而且还可以有效地提高SA设备的损坏阈值。此外，SA材料被SiO 2包裹，从而隔离了外部环境的影响。基于WS 2 / SiO 2玻璃SA的首次制备，在掺width光纤激光器（YDFL）中获得了稳定的孤子脉冲，其脉冲宽度为58 ps，平均输出功率为56.8 mW，重复频率为19.03 MHz。另外，在掺ped光纤激光器（EDFL）中，还可以实现脉冲宽度为325 fs且输出功率为39.6 mW的稳定锁模操作。这些结果表明，通过溶胶-凝胶法制备的WS 2 / SiO 2玻璃可以显着提高激光器的输出功率并缩短光纤激光器的脉冲宽度，这为SA器件的传统制备方法提供了新的机会。
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