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Chinese Optics Letters, Volume. 14, Issue 9, 091403(2016)

Titanium dioxide-based Q-switched dual wavelength in the 1  micron region

H. Ahmad1、*, M. A. M. Salim1, Z. A. Ali1, M. F. Ismail1, K. Thambiratnam1, A. A. Latif2, N. Nayan3, and S. W. Harun1
Author Affiliations
  • 1Photonics Research Centre (PRC), University of Malaya, Kuala Lumpur 50603, Malaysia
  • 2Department of Physics, University Putra Malaysia, Serdang 43400, Malaysia
  • 3Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Johor Baru 86400, Malaysia
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    (a) FESEM image, (b) UV-Vis absorbance, (c) linear absorption, and (d) XRD pattern of TiO2.

    Fig. 1. (a) FESEM image, (b) UV-Vis absorbance, (c) linear absorption, and (d) XRD pattern of TiO2.

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    Configuration for measuring (a) the nonlinear absorption of TiO2 and (b) the saturable absorption distinctive of the TiO2 SA.

    Fig. 2. Configuration for measuring (a) the nonlinear absorption of TiO2 and (b) the saturable absorption distinctive of the TiO2 SA.

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    Experimental setup of TiO2-based SA in 1 μm region.

    Fig. 3. Experimental setup of TiO2-based SA in 1 μm region.

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    Changes in pulse duration at (a) 143.90 and (b) 231.60 mW with a frequency of 31.2 and 62.4 kHz, respectively.

    Fig. 4. Changes in pulse duration at (a) 143.90 and (b) 231.60 mW with a frequency of 31.2 and 62.4 kHz, respectively.

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    Distinctive properties of Q-switching: (a) optical domain, (b) pulse duration, (c) pulse width, and (d) frequency domain at a pump LD power of 188.0 mW.

    Fig. 5. Distinctive properties of Q-switching: (a) optical domain, (b) pulse duration, (c) pulse width, and (d) frequency domain at a pump LD power of 188.0 mW.

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    Correlation between (a) the repetition rate and pulse width and (b) the pulse energy and the average output power corresponding to the pump power.

    Fig. 6. Correlation between (a) the repetition rate and pulse width and (b) the pulse energy and the average output power corresponding to the pump power.

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    H. Ahmad, M. A. M. Salim, Z. A. Ali, M. F. Ismail, K. Thambiratnam, A. A. Latif, N. Nayan, S. W. Harun. Titanium dioxide-based Q-switched dual wavelength in the 1  micron region[J]. Chinese Optics Letters, 2016, 14(9): 091403

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jun. 11, 2016

    Accepted: Jul. 8, 2016

    Published Online: Aug. 3, 2018

    The Author Email: H. Ahmad (harith@um.edu.my)

    DOI:10.3788/COL201614.091403

    Topics

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