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  1. Article ; Online: Single-frequency fiber laser at 1627 nm based on a self-designed Er-doped hybridized glass fiber.

    Li, Jialong / Yang, Changsheng / Jiang, Kui / Zhao, Qilai / Mo, Shiman / Duan, Yezhen / Zhang, Yu / Li, Li / Zhou, Shifeng / Feng, Zhouming / Yang, Zhongmin / Xu, Shanhui

    Optics letters

    2023  Volume 48, Issue 23, Page(s) 6116–6119

    Abstract: Aiming at applications like expanding usable wave band of optical telecommunication and preparing Sr optical lattice clocks, a 1627 nm single-frequency fiber laser (SFFL) is demonstrated based on a 7-m-long self-designed Er-doped hybridized glass fiber ( ... ...

    Abstract Aiming at applications like expanding usable wave band of optical telecommunication and preparing Sr optical lattice clocks, a 1627 nm single-frequency fiber laser (SFFL) is demonstrated based on a 7-m-long self-designed Er-doped hybridized glass fiber (EDHF) and a linear cavity configuration with a loop mirror filter (LMF). By inserting a 10-m-long unpumped commercial Er-doped fiber as a dynamic Bragg grating into the LMF, a stable single-longitudinal-mode (SLM) laser with an output power of about 10 mW is obtained. The optical signal-to-noise ratio (OSNR) of SFFL is over 50 dB, and the linewidth is about 3.7 kHz. The measured relative intensity noise (RIN) is less than -140 dB/Hz at frequencies of over 0.5 MHz, and a power variation in 1 h is less than ±0.26%. To our best knowledge, it is the first demonstration of a SFFL operating at the U-band. This 1627 nm SFFL can provide advanced light source technology support for many cutting-edge applications.
    Language English
    Publishing date 2023-12-01
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.506049
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: High-sensitivity hemoglobin detection based on polarization-differential spectrophotometry.

    Deng, Chunlan / Zhao, Qilai / Gan, Yichuan / Yang, Changsheng / Zhu, Hongbo / Mo, Shiman / Zheng, Junjie / Li, Jialong / Jiang, Kui / Feng, Zhouming / Wei, Xiaoming / Zhang, Qinyuan / Yang, Zhongmin / Xu, Shanhui

    Biosensors & bioelectronics

    2023  Volume 241, Page(s) 115667

    Abstract: Hemoglobin content is recognized as a momentous and fundamental physiological indicator, especially the precise detection of trace hemoglobin is of great significance for early diagnosis and prevention of tumors, cancer, organic injury, etc. Therefore, ... ...

    Abstract Hemoglobin content is recognized as a momentous and fundamental physiological indicator, especially the precise detection of trace hemoglobin is of great significance for early diagnosis and prevention of tumors, cancer, organic injury, etc. Therefore, high-sensitivity hemoglobin detection is imperative. However, effective detection methods and reliable detection systems are still lacking and remain enormous challenges. Herein, we present a synthetical strategy to break through the existing bottleneck based on polarization-differential spectrophotometry and high-performance single-frequency green fiber laser. Importantly, this framework not only has precisely extracted the two-dimensional information of intensity and polarization during the interaction between laser and hemoglobin, but also has taken advantage of the high monochromaticity and fine directivity in the optimized laser source to reduce the undesirable scattered disturbance. Thus, the hemoglobin detection sensitivity of 7.2 × 10
    MeSH term(s) Biosensing Techniques ; Spectrophotometry/methods ; Hemoglobins/analysis ; Lasers ; Light
    Chemical Substances Hemoglobins
    Language English
    Publishing date 2023-09-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 1011023-9
    ISSN 1873-4235 ; 0956-5663
    ISSN (online) 1873-4235
    ISSN 0956-5663
    DOI 10.1016/j.bios.2023.115667
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Highly reversible lithium storage in Li2C2 nanosheets

    Fan, Ye / Deng, Chao / Gao, Yuxuan / Ding, Yi / Wu, Yuchen / Mo, Shiman / Yao, Yingbang / Liang, Bo / Lu, Shengguo / Qi, Wen / Tao, Tao

    Carbon. 2021 June 15, v. 177

    2021  

    Abstract: Using Li-carbon composites as anodes in high-energy-density lithium batteries leads to significant improvements in cycling life and safety compared with lithium metal. Li₂C₂ consisting of dumbbell anions is the most thermodynamically stable phase in the ... ...

    Abstract Using Li-carbon composites as anodes in high-energy-density lithium batteries leads to significant improvements in cycling life and safety compared with lithium metal. Li₂C₂ consisting of dumbbell anions is the most thermodynamically stable phase in the family of lithium-carbon materials, however its low conductivity is a critical obstacle to the practical applications. sp²-hybridizing carbon is one promising option for unique electronic structures. Here, Li₂C₂ alloy nanosheets composed of sp²-hybridized carbon atoms are directly formed from Li element and carbon during ball milling process, presenting a metallic feature at ambient conditions. After removing lithium from these alloy nanosheets, amorphous carbon ultrathin nanosheets are obtained. A vertically aligned Li₂C₂ nanosheet foil prepared by pressing the milled powder, can be used as free-standing, binder-free electrodes for fabricating various types of lithium batteries, and their excellent electrochemical performance is attributed to a highly reversible Li atoms uptake in amorphous carbon nanosheets.
    Keywords alloys ; carbon ; electrochemistry ; foil ; lithium ; nanosheets ; thermodynamics
    Language English
    Dates of publication 2021-0615
    Size p. 357-365.
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ISSN 0008-6223
    DOI 10.1016/j.carbon.2021.02.095
    Database NAL-Catalogue (AGRICOLA)

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