一种用于 Q 开关 Nd:GdVO4 激光器的高效石墨烯氧化物吸收体。

A highly efficient graphene oxide absorber for Q-switched Nd:GdVO4 lasers.

机构信息

Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan.

出版信息

Nanotechnology. 2011 Nov 11;22(45):455203. doi: 10.1088/0957-4484/22/45/455203. Epub 2011 Oct 21.

PMID:22019939

Abstract

We demonstrated that graphene oxide material could be used as a highly efficient saturable absorber for the Q-switched Nd:GdVO4 laser. A novel and low-cost graphene oxide (GO) absorber was fabricated by a vertical evaporation technique and high viscosity of polyvinyl alcohol (PVA) aqueous solution. A piece of GO/PVA absorber, a piece of round quartz, and an output coupler mirror were combined to be a sandwich structure passive component. Using such a structure, 104 ns pulses and 1.22 W average output power were obtained with the maximum pulse energy at 2 µJ and a slope efficiency of 17%.

摘要

我们证明了氧化石墨烯材料可用作高效的可饱和吸收体用于调 Q 的 Nd：GdVO4 激光。一种新型的、低成本的氧化石墨烯（GO）吸收体是通过垂直蒸发技术和高粘度的聚乙烯醇（PVA）水溶液制造的。一块 GO/PVA 吸收体、一块圆形石英和一个输出耦合镜被组合成一个夹层结构的无源元件。使用这种结构，我们获得了 104ns 的脉冲和 1.22W 的平均输出功率，最大脉冲能量为 2µJ，斜率效率为 17%。