• Title/Summary/Keyword: Science technology

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High Repetition Wavelength-locked 878.6 nm LD Dual-end-pumped Nd:YVO4 1064 nm Laser

  • Li, Yue;Yu, Yong-Ji;Wang, Yu-Heng;Liu, Hang;Liu, He-Yan;Jin, Guang-Yong
    • Current Optics and Photonics
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    • v.2 no.6
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    • pp.582-588
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    • 2018

  • A $Nd:YVO_4$ laser dual-end-pumped by a wavelength-locked 878.6 nm laser diode is presented. At the repetition rate of 500 KHz, the absorbed pump power of 58 W, an output power of 26.1 W at 1064 nm is obtained, corresponding to an optical-optical efficiency of 45%. The pulse width is 44.2 ns. Meanwhile, the effects of traditional 808 nm pumping and 878.6 nm dual-end-pumping on the output laser beam quality and pulse width are compared and analyzed in an experiment.

  • https://doi.org/10.3807/COPP.2018.2.6.582 인용 PDF KSCI HTML

Wide-Tunable Mid Infrared Intra-cavity Optical Parametric Oscillator Based on Multi-period MgO:PPLN

  • Wang, Xiao-Chan;Wang, Yu-Heng;Zheng, Hao;Liu, Hong-Zhi;Yu, Yong-Ji;Wang, Zi-Jian
    • Current Optics and Photonics
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    • v.5 no.1
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    • pp.59-65
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    • 2021

  • This paper reports a tunable diode-pumped folded intracavity Q-switched singly resonant optical parametric oscillator based on multi-period MgO:PPLN. A wide tuning mid-infrared parametric light from 2.78 ㎛ to 4.17 ㎛ was obtained in real time by changing the poled periods and temperatures. The maximum output power of 1.89 W at 3.2 ㎛, 1.53 W at 3.5 ㎛, 0.87 W at 3.8 ㎛ and 0.486 W at 4.1 ㎛ were achieved. The highest optical-optical conversion efficiency was 7.89%. During experiments, a range tunable output of 2.78-4.17 ㎛ in the mid-infrared range was achieved.

  • https://doi.org/10.3807/COPP.2021.5.1.059 인용 PDF KSCI

Preparation and Properties of Inorganic-organic Hybrid $Li^+$ Ion Conductor by Sol-gel Process

  • Nishio, Keishi;Miyazawa, Tsutomu;Watanabe, Yuichi;Tsuchiya, Toshio
    • The Korean Journal of Ceramics
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    • v.7 no.1
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    • pp.1-5
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    • 2001

  • Inorganic-organic hybrid Li$^+$ ion conductors were prepared by the sol-gel process. Tetramethyl orthosilicate (TMOS), polyethylene glycol 200 (PEG$_200$) and lithium bis (trifluoro-methylsulfony) imide were used as raw materials and $H_2O$ was used as a solvent. Hybrid Li$^+$ ion conductor prepared by the sol-gel process showed very high ion conductivities of log${\sigma}_R.T$(S/cm)=-3.73, log${\sigma}_60$(S/cm)=-3.00 at room temperature and $60^{\circ}C$, respectivery. Decomposition voltage was 3.1 V.

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