上海交通大学区域光纤通信网与新型光通信系统国家重点实验室, 上海 200240
将二维材料硒化钨(WSe2)与聚合物聚乙烯醇(PVA)混合制成饱和吸收体薄膜, 在掺铒保偏光纤激光器中实现了稳定的调Q运转。全保偏的腔体能够最大程度减少环境对激光腔双折射的扰动, 在此基础上, 研究了硒化钨聚乙烯醇(WSe2-PVA)饱和吸收体薄膜在调Q运转中的稳定性。研究发现, 当材料中的热量累积到一定阈值后, 聚合物基底材料首先进入熔融状态, 随后热量在薄膜中进一步累积, 导致硒化钨受热损坏, 表现为饱和吸收体薄膜的损耗急剧增加。
激光器 调Q 非线性光学材料 保偏光纤
Author Affiliations
Abstract
1 State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2 Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Deposition of two-dimensional (2D) MoS2 materials on the tapered fiber allows various photonic applications including saturable absorbers and four-wave mixing. Ethanol catalytic deposition (ECD) of MoS2 on the optical tapered fiber was proposed and demonstrated in this work. Different from the conventional optical driven deposition using water or organic solvent, the ECD method utilized the high volatility of the ethanol solvent, which significantly increased the movement speed of the MoS2 nanosheets and thus boosted the deposition rate and reduced the minimum power threshold to drive the deposition. We believe the ECD method should be able to be applied to other similar 2D materials such as other types of transition metal chalcogenides.
Nonlinear optical materials Deposition and fabrication Nonlinear optical devices Photonics Research
2015, 3(3): 0300A102
