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Chinese Optics Letters, Volume. 13, Issue 3, 030602(2015)

Mode-locked 2  μm fiber laser with a multi-walled carbon nanotube as a saturable absorber

S. M. Azooz1, F. Ahmad1, H. Ahmad2, S. W. Harun1,2、*, B. A. Hamida3, S. Khan3, A. Halder4, M. C. Paul4、**, M. Pal4, and S. K. Bhadra4
Author Affiliations
  • 1Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
  • 2Photonics Research Center, University of Malaya, Kuala Lumpur 50603, Malaysia
  • 3Department of Electrical and Computer Engineering, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur 50603, Malaysia
  • 4Fiber Optics and Photonics Division, Central Glass & Ceramic Research Institute, CSIR, Kolkata, India
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    The Raman spectrum obtained from the MWCNT-PVA film.

    Fig. 1. The Raman spectrum obtained from the MWCNT-PVA film.

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    The linear transmission curve of the MWCNT-PVA film, which shows the saturable absorption and non-saturable absorption values of around 4% and 45%, respectively.

    Fig. 2. The linear transmission curve of the MWCNT-PVA film, which shows the saturable absorption and non-saturable absorption values of around 4% and 45%, respectively.

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    Experimental setup of the proposed mode-locked 2 μm fiber laser, using a hybrid gain media in conjunction with a MWCNT-PVA film SA. The inset shows the microscopic cross-sectional view of an octagonal-shaped, double-clad TYDF.

    Fig. 3. Experimental setup of the proposed mode-locked 2 μm fiber laser, using a hybrid gain media in conjunction with a MWCNT-PVA film SA. The inset shows the microscopic cross-sectional view of an octagonal-shaped, double-clad TYDF.

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    Optical spectrum of the mode-locked laser.

    Fig. 4. Optical spectrum of the mode-locked laser.

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    Oscilloscope trace of a typical pulse train from the mode-locked laser.

    Fig. 5. Oscilloscope trace of a typical pulse train from the mode-locked laser.

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    Autocorrelation trace, with a sech2 fit.

    Fig. 6. Autocorrelation trace, with a sech2 fit.

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    RF spectrum of the mode-locked fiber laser.

    Fig. 7. RF spectrum of the mode-locked fiber laser.

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    S. M. Azooz, F. Ahmad, H. Ahmad, S. W. Harun, B. A. Hamida, S. Khan, A. Halder, M. C. Paul, M. Pal, S. K. Bhadra, "Mode-locked 2  μm fiber laser with a multi-walled carbon nanotube as a saturable absorber," Chin. Opt. Lett. 13, 030602 (2015)

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Oct. 7, 2014

    Accepted: Dec. 22, 2014

    Published Online: Sep. 25, 2018

    The Author Email: S. W. Harun (swharun@um.edu.my), M. C. Paul (paulmukul@hotmail.com)

    DOI:10.3788/COL201513.030602

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology