Author Affiliations
Abstract
State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China
The pulse dynamics of harmonic mode-locking in a dissipative soliton resonance (DSR) region in an erbium-doped fiber ring laser is investigated at different values of anomalous dispersion. The fiber laser is mode-locked by a nonlinear polarization rotation technique. By inserting 0–200 m anomalous dispersion single-mode fiber in the laser cavity, the cavity length is changed from 17.3 to 217.3 m, and the corresponding dispersion of the cavity ranges from ?0.27 to ?4.67 ps2. The observed results show that the tuning range of repetition rate under a harmonic DSR condition is highly influenced by the cavity dispersion. Furthermore, it is found that, by automatically adjusting their harmonic orders, the lasers can work at certain values of repetition rate, which are independent of the cavity length and dispersion. The pulses at the same repetition rate in different laser configurations have similar properties, demonstrating that each achievable repetition rate represents an operation regime of harmonic DSR lasers.
(060.4370) Nonlinear optics fibers (060.5530) Pulse propagation and temporal soliton (140.3510) Lasers fiber (140.4050) Mode-locked lasers. Photonics Research
2017, 5(6): 06000612
电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室, 四川 成都 610054
3 μm中红外波段脉冲光纤激光器在**、**、生物医疗、大气通信等领域有着广泛的应用前景。以石墨烯为代表的二维材料由于易于集成及实现全光纤化等无可比拟的优点而作为中红外波段可饱和吸收体备受关注。阐述了石墨烯、黑磷、拓扑绝缘体、过渡金属硫化物等二维材料的原子结构及光学特性, 分析对比了这四类二维材料用于中红外脉冲光纤激光器的作用机理及特点, 对国内外基于二维材料的中红外脉冲光纤激光器的研究进展进行了总结, 并对未来基于二维材料的中红外脉冲光纤激光器的发展前景进行了展望。
激光器 脉冲激光器 二维材料 中红外波段
