Zinc-oxide nanoparticle-based saturable absorber deposited by simple evaporation technique for Q-switched fiber laser  

作　　者：Syarifah Aloyah Syed Husin Farah Diana Muhammad Che Azurahanim Che Abdullah Siti Huzaimah Ribut Mohd Zamani Zulkifli Mohd Adzir Mahdi 

机构地区：[1]Department of Physics,Faculty of Science,Universiti Putra Malaysia,43400 UPM Serdang,Selangor,Malaysia [2]Photonics Research Centre,Department of Physics,University of Malaya,50603 Kuala Lumpur,Malaysia [3]Kulliyyah of Science,International Islamic University of Malaysia,Jalan Sultan Ahmad Shah,Bandar Indera Mahkota,25200 Kuantan,Pahang,Malaysia [4]Wireless and Photonics Networks Research Centre,Faculty of Engineering,Universiti Putra Malaysia,43400 UPM Serdang,Selangor,Malaysia

出　　处：《Chinese Physics B》2019年第8期167-171,共5页中国物理B（英文版）

基　　金：Project supported by the Science Fund from the Ministry of Higher Education of Malaysia(MOHE)(Grant No.FRGS/1/2016/STG02/UPM/02/5)

摘　　要：A Q-switched erbium-doped fiber laser(EDFL)incorporating zinc-oxide(ZnO)nanoparticles-based saturable absorber(SA)is proposed and demonstrated.To form the SA,the ZnO nanoparticles,which are originally in the powder form,are first dissolved in ethanol and subsequently deposited onto the surface of fiber ferrule by using the adhesion effect with the evaporation technique.By integrating the ZnO nanoparticle-based SA into a laser cavity of an EDFL,a self-started and stable Q-switching is achieved at a low threshold power of 20.24 mW.As the pump power is increased,the pulse repetition rate is tunable from 10.34 kHz to 25.59 kHz while pulse duration decreases from 21.39μs to 3.65μs.Additionally,this Q-switched laser has a maximum energy per pulse of 19.34 nJ and an average output power of 0.46 mW.These results indicate the feasibility and functionality of the ZnO nanoparticles-based SA for Q-switched generation,which offers the flexibility and easy integration of the SA into a ring laser cavity.A Q-switched erbium-doped fiber laser(EDFL) incorporating zinc-oxide(ZnO) nanoparticles-based saturable absorber(SA) is proposed and demonstrated. To form the SA, the ZnO nanoparticles, which are originally in the powder form, are first dissolved in ethanol and subsequently deposited onto the surface of fiber ferrule by using the adhesion effect with the evaporation technique. By integrating the ZnO nanoparticle-based SA into a laser cavity of an EDFL, a self-started and stable Q-switching is achieved at a low threshold power of 20.24 mW. As the pump power is increased, the pulse repetition rate is tunable from 10.34 kHz to 25.59 kHz while pulse duration decreases from 21.39 μs to 3.65 μs. Additionally,this Q-switched laser has a maximum energy per pulse of 19.34 nJ and an average output power of 0.46 mW. These results indicate the feasibility and functionality of the ZnO nanoparticles-based SA for Q-switched generation, which offers the flexibility and easy integration of the SA into a ring laser cavity.

关 键 词：zinc oxide saturable ABSORBER Q-SWITCHED fiber laser 

分 类 号：O4[理学—物理]