Q-switched ytterbium-doped fiber laser based on evanescent field interaction with lutetium oxide

Jafry, A.A.A. and Kasim, N. and Muhammad, Ahmad Razif and Rosol, Ahmad Haziq Aiman and Yusoff, R.A.M. and Mahyuddin, Mohamad Badrol Hisyam and Zulkipli, Nur Farhanah and Samsamnun, Farina Saffa Mohamad and Harun, Sulaiman Wadi (2019) Q-switched ytterbium-doped fiber laser based on evanescent field interaction with lutetium oxide. Applied Optics, 58 (35). pp. 9670-9676. ISSN 1559-128X, DOI https://doi.org/10.1364/AO.58.009670.

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Official URL: https://doi.org/10.1364/AO.58.009670


We demonstrated lutetium oxide (Lu2O3) deposited onto D-shaped fiber producing Q-switched ytterbium-doped fiber laser (YDFL) with an operating wavelength of 1037 nm. D-shaped fiber Lu2O3 as a saturable absorber (SA) was prepared using a polishing-wheel technique by polishing 2 times to establish an excellent evanescent field interaction between material and light on the surface of the polished region. The SA was deployed into a YDFL to generate Q-switching. The proposed D-shaped fiber Lu2O3 initiated pulses as short as 3.6 µs, with the highest repetition rate of 65.8 kHz. Stability of the SA is proven, as it produced stable pulses within the pump power of 99 to 133 mW with an SNR of 62.13 dB. Q-switched YDFL generates pulses with an output power of 0.93 to 1.99 mW and pulse energy of 17 to 30 nJ. We obtained a laser cavity with the optical-to-optical efficiency of 3.33%, which was the highest among D-shaped fiber-deposited SA materials in YDFL. Therefore, Lu2O3 deposited onto D-shaped fiber can be deployed as an SA in YDFL for a portable Q-switched laser source. © 2019 Optical Society of America.

Item Type: Article
Funders: Ministry of Education (MOE), Malaysia, under Fundamental Research Grant Scheme (FRGS), Universiti Teknologi Malaysia (UTM), under Research University Grant (RUG)
Uncontrolled Keywords: Saturable absorbers; Q switching; Absorber SA
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Mar 2020 06:34
Last Modified: 26 Mar 2020 06:34
URI: http://eprints.um.edu.my/id/eprint/24115

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