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    Lasing from ZnO nanorods on ITO-coated substrates

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    Type
    Conference Paper
    Authors
    Wan Ahmad Kamil, Wan Maryam
    Shakfa, Mohammad Khaled
    Nordin, Muhammad Nuri
    Priante,Davide
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Photonics Laboratory
    Date
    2018-05-09
    Permanent link to this record
    http://hdl.handle.net/10754/631520
    
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    Abstract
    Lasing was observed from ZnO nanorods prepared by a simple method of chemical bath deposition (CBD) on ITOcoated glass substrates. The X-ray diffraction pattern showed a dominant peak for (002) plane typical for good crystalline quality of ZnO grown in the z-direction with a wurtzite structure. Continuous-wave photoluminescence (PL) spectra revealed a peak centered at 380 nm corresponding to the band gap of ZnO. Under pulsed optical pumping, lasing was observed above the nominal PL peak, initially for one mode at 384 nm. Two additional modes at 386 nm and 390 nm was observed when the pumping power is further increased. Threshold was achieved at 0.7 μJ which was 10 times smaller than that reported for powder-based random lasers. In addition, gain pinning was also observed for the dominant mode and the additional two modes appeared upon onset of this gain pining behavior.
    Citation
    Wan Ahmad Kamil WM, Shakfa MK, Nordin MN, Priante D (2018) Lasing from ZnO nanorods on ITO-coated substrates. Semiconductor Lasers and Laser Dynamics VIII. Available: http://dx.doi.org/10.1117/12.2307131.
    Sponsors
    The work is partially funded by Universiti Sains Malaysia short term grant: 304/PFIZIK/6312155 and Peruntukan Tabung Persidangan Luar Negara (TPLN) Universiti Sains Malaysia: 302/JPNP/321001. We also acknowledge Prof BS Ooi for financially supporting part of the work.
    Publisher
    SPIE-Intl Soc Optical Eng
    Journal
    Semiconductor Lasers and Laser Dynamics VIII
    Conference/Event name
    Semiconductor Lasers and Laser Dynamics VIII 2018
    DOI
    10.1117/12.2307131
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10682/2307131/Lasing-from-ZnO-nanorods-on-ITO-coated-substrates/10.1117/12.2307131.full
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2307131
    Scopus Count
    Collections
    Conference Papers; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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