Q-switched pulse generation with lutetium oxide absorber  

作　　者：Nurul Athirah Mohamad Abdul Ghafar Nur Farhanah Zulkipli Rabi’Atul A.Mat Yusoff Arni Munirah Markom Moh Yasin Sulaiman Wadi Harun 

机构地区：[1]School of Electrical Engineering,College of Engineering,Universiti Teknologi MARA,Shah Alam 40450,Malaysia [2]Department of Physics,Faculty of Science and Technology,Airlangga University,Surabaya,Indonesia [3]Department of Physics,Faculty of Science,Universiti Teknologi Malaysia,Skudai,Malaysia [4]Photonics Engineering Laboratory,Department of Electrical Engineering,Faculty of Engineering,University of Malaya,Kuala Lumpur,Malaysia

出　　处：《Optoelectronics Letters》2023年第3期129-133,共5页光电子快报（英文版）

基　　金：supported by the Airlangga University Grant Scheme (2022)。

摘　　要：A lutetium oxide(Lu_(2)O_(3)) film was proposed and demonstrated for Q-switching operation at 1.55 μm region. It was obtained by solving Lu_(2)O_(3) powder into isopropyl alcohol and mixing the solution into polyvinyl alcohol(PVA) solution to form a composite precursor solution via stirring, sonicating, and centrifuging processes. The thin film was formed through a drop and dry process and a small piece of this film was integrated into erbium-doped fiber laser(EDFL) cavity to modulate the cavity loss via Q-switching mechanism for pulse generation. The Q-switched laser operated at 1 565 nm with the repetition rate of 75.26 k Hz as the pump power was raised to the maximum value of 145.83 m W. The maximum pulse energy of 41.85 n J was recorded at 145.83 m W pump power. The mode-locked pulse operated at 968.5 k Hz with a pulse width of 510 ns was also realized in an extended EDFL cavity. The simple and cost-effective laser should have various applications including material processing, sensing and biomedical areas.

关 键 词：SWITCHED pulse PUMP 

分 类 号：TN248[电子电信—物理电子学]