Q-SWITCHED ERBIUM-DOPED FIBER LASER UTILIZING TUNGSTEN DISULFIDE DEPOSITED ONTO D-SHAPED FIBER AS SATURABLE ABSORBER

Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia; S. OMAR; N. F. ZULKIPLI; Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; A. A. A. JAFRY; Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; B. MUSA; Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia; M. I. M. ALI; Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia; S. W. HARUN; Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Z. JUSOH; Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia; M. YASIN; Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya (60115) Indonesia

doi:10.15251/cl.2020.173.99

journal article·2020-03Open access

Q-SWITCHED ERBIUM-DOPED FIBER LASER UTILIZING TUNGSTEN DISULFIDE DEPOSITED ONTO D-SHAPED FIBER AS SATURABLE ABSORBER

Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, S. OMAR, N. F. ZULKIPLI, Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia, A. A. A. JAFRY, Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia, B. MUSA, Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, M. I. M. ALI, Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, S. W. HARUN, Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia, Z. JUSOH, Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, M. YASIN, Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya (60115) Indonesia

Chalcogenide Letters· Volume 17· Issue 3

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Source abstract

Abstract

Q-switched fiber laser was demonstrated by using tungsten disulfide (WS2), which was deposited onto D-shaped fiber as a passive saturable absorber (SA) to modulate the loss inside the laser cavity. The SA was produced by repeatedly dropping and drying the WS2 solution onto side-polished fiber to form a nanosheets layer. The SA is inserted into the ring laser cavity configured with a 2.4 m long Erbium-doped fiber as the gain medium to generate Q-switching pulses train operating at 1557.9 nm. The Q-switched laser produced a pulse train, which the repetition rate is tunable from 77.2 to 108.9 kHz as the pump power is increased from 84.0 to 182.9 mW. The minimum pulse width of 3.25 µs and the maximum pulse energy of 14.6 nJ was obtained at 182.9 mW pump power. The generated Q-switching pulses are stable and thus it is suitable for use in many practical applications.

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Research context

Nanomaterials

OpenAlex topics: Advanced Fiber Laser Technologies · Photonic Crystal and Fiber Optics · Advanced Fiber Optic Sensors

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