4.8 Article

Enhancing Q-Switched Fiber Laser Performance Based on Reverse Saturable and Saturable Absorption Properties of CuCrO2 Nanoparticle-Polyimide Films

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 18, 页码 21748-21755

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c02762

关键词

fiber laser; passive Q-switching; reverse saturable absorption; saturable absorption

资金

  1. National Natural Science Foundation of China [61804014, 61805023, 61804013]

向作者/读者索取更多资源

The study demonstrated the use of CuCrO2 nanoparticle-polyimide composite film as a saturable absorber to regulate the output characteristics of a passively Q-switched fiber laser at 1.55 micrometers. By utilizing reverse saturable and saturable absorptions, the laser showed significant performance enhancement with two stages of output. This approach resulted in pulse duration and repetition rate compression simultaneously, highlighting the importance of proper cavity loss design in optimizing Q-switched pulse laser output characteristics.
We demonstrate CuCrO2 (CCO) nanoparticle (NP)-polyimide (PI) composite film as a saturable absorber (SA) to regulate the output characteristics of passively Q-switched fiber laser at 1.55 mu m. Based on the reverse saturable and saturable absorptions of the CCO NP-PI film, the passively Q-switched fiber laser expressed two stages with the increase of pump power for substantial performance enhancement. Reverse saturation absorption is observed to introduce appropriate cavity loss, which constructs effective pathways for promoting both the modulation depth and over threshold degree, as well as reducing the photon lifetime. In particular, our results realized the pulse duration and repetition rate compressing simultaneously for the first time. The second stage output laser exhibits a peak power of 1016 mW and a single pulse energy of 183 nJ, which are about 88 and 9 times higher than those of the first stage. Furthermore, the optical-optical conversion efficiency is up to 1270%. All of these can evidently demonstrate the importance of the appropriate cavity loss design for optimizing the Q-switched pulse laser output characteristics.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据