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Nanosecond Pulses Generation with Samarium Oxide Film Saturable Absorber

Chinese Physics Letters 2019年第7期36卷 48-51页

作者： N.F.Zulkipli m.Batumalay F.S.m.Samsamnun m.B.H.mahyuddin E.Hanafi T.F.T.m.N.izam m.i.m.a.khudus S.W.Harun Photonics Engineering Laboratory Department of Electrical Engineering University of Malaya Kuala Lumpur 50603 Malaysia Faculty of information Technology & Sciences Inti International University Perdana BBN Putra Nilai Nilai 71800 Negeri Sembilan Department of Physics University of Malaya Kuala Lumpur 50603 Malaysia Department of Physics Faculty of Science and Technology Airlangga University Surabaya Indonesia

Nanosecond pulse generation is demonstrated in a mode-locked erbium-doped fiber laser(EDFL) utilizing a samarium oxide(Sm2O3) film. The Sm2O3 film exhibits a modulation depth of 33%, which is suitable for modelocking operation. The passively pulsed EDFL operates stably at 1569.8 nm within a pumping power from 109 to 146 m W. The train of generated output pulses has a pulse width of 356 nm repeated at a fundamental frequency of 0.97 mHz. The average output power of 3.91 m W is obtained at a pump power of 146 m W, corresponding to 4.0 nJ pulse energy. The experimental result indicates that the proposed Sm2O3 saturable absorber is viable for the construction of a flexible and reliably stable mode-locked pulsed fiber laser operating in the 1.5 m region.

关键词： Nanosecond pulse generation erbium-doped fiber laser in the 1.5 m region

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indium Tin Oxide Coated D-Shape Fiber as a Saturable Absorber for Generating a Dark Pulse mode-Locked Laser

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Chinese Physics Letters 2020年第5期37卷 51-54页

作者： B.Nizamani S.Salam A.A.A.Jafry N.m.Zahir N.Jurami m.i.m.Abdul khudus A.Shuhaimi E.Hanafi S.W.Harun Photonics Engineering Laboratory Department of Electrical EngineeringUniversity of Malaya50603 Kuala LumpurMalaysia Faculty of information Technology Imam Ja'afar Al-Sadiq UniversityBaghdadIraq Department of Physics Faculty of ScienceUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia Department of Physics Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Low-Dimensional materials Research Center Department of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LurmpurMalaysia Department of Engineering Faculty of Vocational StudiesAirlangga UniversitySurabayaIndonesia

A dark pulse mode-locked laser is experimentally demonstrated using the indium tin oxide(iTO)coated Dshape fiber as a saturable absorber(SA).Using the polishing wheel technique,a D-shape single mode fiber was fabricated.A 60-nm-thick layer of iTO was deposited over the D-shape fiber using the electron beam deposition *** SA has a saturation intensity of 40.32 mW/cm^2 and a modulation depth of 3.5%.A stable dark pulse mode-locked laser was observed at a central wavelength of 1559.4 nm with repetition rate 0.98 mHz,pulse width 370 ns and signal-to-noise ratio 61 dB.

关键词： fiber polishing mode

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