1 重庆师范大学物理与电子工程学院, 重庆 401331
2 北京工业大学应用数理学院, 北京 100124
以InGaAs多量子阱为有源区材料,以对抽运光透明的AlGaAs/AlAs为后端分布布拉格反射镜材料,采用后端抽运方式,在腔内插入标准具作为滤波元件,通过腔内倍频,获得小型化可调谐的光抽运外腔面发射绿光激光器。作为滤波元件,标准具可压窄基频光的光谱半峰全宽。为了阻止倍频光返回到增益芯片,标准具镀有倍频光高反膜。激光器的基频光调谐范围超过10 nm,倍频绿光在中心波长559 nm处的调谐范围为4 nm,光谱半峰全宽为1.0 nm,最大输出功率为65 mW。
激光器 可调谐波长 外腔面发射激光器
Author Affiliations
Abstract
1 College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
2 Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
Few-layer graphitic carbon nitride (g-C3N4) nanosheets were fabricated and utilized as a saturable absorber for mode-locking in an Er-doped fiber laser with net normal dispersion. The g-C3N4/polyvinyl alcohol (PVA) hybrid-film-based saturable absorber has a modulation depth of 4.01% and a saturation intensity of 7.5 MW/cm2. By integrating g-C3N4-PVA mode-locker into the laser cavity, a mode-locked operation could be obtained. The achieved mode-locking pulse centered at 1530.3 nm has a pulse width of 530 ps. Its repetition rate is 40.8 MHz, and the corresponding signal-to-noise ratio is about 55 dB.
140.4050 Mode-locked lasers 160.4236 Nanomaterials 140.3500 Lasers, erbium Chinese Optics Letters
2018, 16(8): 081402
本文主要介绍了二维可饱和吸收体材料在固体激光器中的应用与研究进展。简要介绍了新型二维材料的性质和优点。以石墨烯、拓扑绝缘体、过渡金属硫化物和黑磷等新型二维材料为例分析了它们在固体激光器中实现调Q或锁模的过程, 展示了二维材料在脉冲固体激光研究中的重要应用前景。二维材料与固体激光器的结合, 可进一步推进二维材料的研究, 有望开发出大量新型固体激光器件并且作为基础光源应用于多个领域, 推动相关领域的发展。
二维材料 固体激光器 可饱和吸收体 脉冲激光 two-dimensional materials solid-state lasers saturable absorbers pulsed laser
