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  1. Article

    Open Access

    Pump quantum efficiency optimization of 3.5 μm Er-doped ZBLAN fiber laser for high-power operation

    976 nm + 1976 nm dual-wavelength pumped Er-doped ZBLAN fiber lasers are generally accepted as the preferred solution for achieving 3.5 μm lasing. However, the 2 μm band excited state absorption from the upper ...

    Lu Zhang, Shijie Fu, Quan Sheng, Xuewen Luo, Junxiang Zhang… in Frontiers of Optoelectronics (2023)

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  2. Article

    Open Access

    Intracavity spherical aberration for selective generation of single-transverse-mode Laguerre-Gaussian output with order up to 95

    We investigate the generation of single-transverse-mode Laguerre-Gaussian (LG) emission from a diode-end-pumped Nd:YVO4, 1064 nm laser using mode selection via intracavity spherical aberration (SA). We present bo...

    Quan Sheng, Aihua Wang, Yuanyuan Ma, Sijia Wang, Meng Wang, Zheng Shi… in PhotoniX (2022)

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  3. Article

    Open Access

    Active KTaO3 hybrid terahertz metamaterial

    The dielectric properties of an active KTaO3 hybrid metamaterial structure and its tunability under external electric fields are investigated at room temperature by means of terahertz time-domain spectroscopy. Ap...

    Liang Wu, **glong Liu, Hui Li, Chunfeng Ding, Ningning Xu… in Scientific Reports (2017)

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  4. No Access

    Article

    Effect of Optical Pump on the Dielectric Properties of LiTaO3 in Terahertz Range

    A tuning of the dielectric permittivity spectra of lithium tantalate (LiTaO3) single crystals in an external optical field is investigated at room temperature by means of terahertz time-domain spectroscopy. Appli...

    Liang Wu, Linkun Jiang, Chunfeng Ding… in Journal of Infrared, Millimeter, and Terah… (2015)

  5. No Access

    Article

    Optical Tuning of Dielectric Properties of LiNbO3:Mg in the Terahertz Range

    Tuning of the dielectric permittivity spectra of congruent LiNbO3:Mg single crystals in an external optical pump is investigated at room temperature by means of terahertz time-domain spectroscopy. Application of ...

    Liang Wu, Linkun Jiang, Quan Sheng, **n Ding… in Journal of Infrared, Millimeter, and Terah… (2013)

  6. No Access

    Article

    Volatile by-products during heat polymerization of soybean oil

    Volatile by-products during heat polymerization of soybean oil at 330°C were analyzed using GC-MS and NMR. Color and viscosity changes were monitored for the heat-polymerized soybean oil and the by-products. A...

    Sevim Z. Erhan, Quan Sheng, Hong-Sik Hwang in Journal of the American Oil Chemists' Society (2003)