Surface fluorination treated indium-based quantum dots as a nonlinear saturable absorber for a passive Q-switched 1.0 mu m laser

Zhang, Xiaoli1; Lou, Yajun2; Hu, Lei1; Duan, Weijia1; Chen, Guojie3; Fan, Bingfeng3; Zhao, Weiren1; Zhang, Xinhai2

2022-08-01

10.1039/d2ma00442a

MATERIALS ADVANCES   影响因子和分区

2633-5409

InP-based quantum dots (QDs) have attracted considerable interest in the optoelectronic field owing to their favorable properties. However, to date, the nonlinear optical properties and ultrafast photonics applications of InP-based QDs have rarely been explored. In this study, InP/ZnSe/ZnS QDs with surface fluorination treatment (InP-HF) have been fabricated. Consequently, the nonlinear saturable absorption properties of such InP-HF QDs with surface modification are explored by realizing a modulation depth of 3.27% and a saturable intensity of 1.10 MW cm(-2). We report on the passive Q-switching of a diode-pumped Nd:YVO4 near-infrared laser at 1064 nm (similar to 1.0 mu m) using InP-HF QDs as a SA. At this wavelength, the threshold of pump power is as low as 1 W, and the maximum average output power and the shortest pulse widths are 2.5 W and 178 ns, respectively. The laser results suggest that surface fluorination treated InP-HF QDs could be very promising for generating ultrashort pulse visible lasers.

ESCI

英语

通讯

Guangdong International Cooperation Project[2019A050510002] ; Research Fund of Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology[2020B1212030010] ; Open Fund of Guangdong Provincial Key Laboratory of Information Photonics Technology (Guangdong University of Technology)[GKPT20-09]

Materials Science

Materials Science, Multidisciplinary

WOS:000834105300001

ROYAL SOC CHEMISTRY

Web of Science

1.Sch Phys & Optoelect Engn, Guangdong Prov Key Lab Informat Photon Technol, Guangzhou 510006, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect Elect & Engn, Shenzhen 518055, Peoples R China
3.Foshan Univ, Sch Phys & Optoelect Engn, Guangdong Hong Kong Macao Joint Lab Intelligent M, Foshan 528225, Peoples R China

Zhang, Xiaoli,Lou, Yajun,Hu, Lei,et al. Surface fluorination treated indium-based quantum dots as a nonlinear saturable absorber for a passive Q-switched 1.0 mu m laser[J]. MATERIALS ADVANCES,2022.

Zhang, Xiaoli.,Lou, Yajun.,Hu, Lei.,Duan, Weijia.,Chen, Guojie.,...&Zhang, Xinhai.(2022).Surface fluorination treated indium-based quantum dots as a nonlinear saturable absorber for a passive Q-switched 1.0 mu m laser.MATERIALS ADVANCES.

Zhang, Xiaoli,et al."Surface fluorination treated indium-based quantum dots as a nonlinear saturable absorber for a passive Q-switched 1.0 mu m laser".MATERIALS ADVANCES (2022).