| Nurul Athirah Mohamad Abdul Ghafar,Nur Farhanah Zulkipli,Rabi’Atul A. Mat Yusoff,Arni Munirah Markom,Moh Yasin,Sulaiman Wadi Harun.Q-switched pulse generation with lutetium oxide absorber[J].Optoelectronics Letters,2023,(3):129-133 |
| Q-switched pulse generation with lutetium oxide absorber |
| Author Name | Affiliation | | Nurul Athirah Mohamad Abdul Ghafar | School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia | | Nur Farhanah Zulkipli | Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia | | Rabi’Atul A. Mat Yusoff | Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Malaysia | | Arni Munirah Markom | School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia | | Moh Yasin | Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia | | Sulaiman Wadi Harun | School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia
Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia |
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| Abstract: |
| A lutetium oxide (Lu2O3) film was proposed and demonstrated for Q-switching operation at 1.55 ?m region. It was obtained by solving Lu2O3 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 kHz as the pump power was raised to the maximum value of 145.83 mW. The maximum pulse energy of 41.85 nJ was recorded at 145.83 mW pump power. The mode-locked pulse operated at 968.5 kHz 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. |
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