偏振控制器
材料科学
饱和吸收
光纤激光器
激光器
光电子学
光纤
铒
光学
兴奋剂
物理
波长
作者
Huiran Yang,Xupeng Li,Mengting Qi,Jiawei Cheng,Lu Li
标识
DOI:10.1016/j.yofte.2022.102956
摘要
Passively harmonic mode locking of an erbium-doped fiber laser based on TaSe2 nanosheets saturable absorber (SA) is demonstrated. The TaSe2 nanosheets are prepared by the liquid phase exfoliation technology and then deposited onto side surface of a D-shaped fiber to form a fiber-compatible TaSe2 SA. The balanced twin-detector method is utilized to measure nonlinear absorption characterization of the fabricated SA, which gives saturable absorption, nonsaturable absorption, and saturation intensity as 5.49%, 24.6%, and 89.2 MW/cm2, respectively. Then, TaSe2 SA is inserted into a passively mode-locked erbium-doped fiber laser, and the fiber laser is demonstrated with a fundamental frequency of 7.1 MHz. By adjusting the polarization controller and pump power, harmonic mode-locking operation is realized. As the pump power increases to 380 mw, 128th harmonic mode-locked pulses at 908.8 MHz repetition rate are stably generated. The results confirm that TaSe2 is indeed a very desirable photonic material, which can be used in photonics, fiber optic communication, laser material processing and light modulators.
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