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| 1 | Integrated lithium niobate single-mode lasers by the Vernier effect显示文摘Microcavity lasers based on erbium-doped lithium niobate on insulator(LNOI),which are key devices for LNOI integrated photonics,have attracted significant attention recently.In this study,we report the realization of a C-band single-mode laser using the Vernier effect in two coupled erbium-doped LNOI microrings with different radii under the pump of a 980-nm continuous laser.The laser,operating stably over a large range of pumping power,has a pump threshold of about 200μW and a side-mode suppression ratio exceeding 26 dB.The high-performance LNOI single-mode laser will promote the development of lithium niobate integrated photonics. | Ru Zhang Chen Yang ZhenZhong Hao Di Jia Qiang Luo DaHuai Zheng HongDe Liu XuanYi Yu Feng Gao Fang Bo YongFa Kong GuoQuan Zhang JingJun Xu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，9： | 4 |
| 2 | Microdisk lasers on an erbium-doped lithium-niobite chip显示文摘Lithium niobate on insulator(LNOI) provides a platform for the fundamental physics investigations and practical applications of integrated photonics. However, as an indispensable building block of integrated photonics, lasers are in short supply. In this paper, erbium-doped LNOI laser in the 1550-nm band was demonstrated in microdisk cavities with high quality factors fabricated in batches by UV exposure, inductively coupled plasma reactive ion etching, and chemomechanical polishing. The threshold and conversion efficiency of the erbium-doped LNOI microdisk laser were measured to be lower than 1 m W and 6.5×10^(-5)%, respectively. This work will benefit the development of integrated photonics based on LNOI. | Qiang Luo ZhenZhong Hao Chen Yang Ru Zhang DaHuai Zheng ShiGuo Liu HongDe Liu Fang Bo YongFa Kong GuoQuan Zhang JingJun Xu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，3： | 4 |
| 3 | The real-time dynamic holographic display of LN:Bi,Mg crystals and defect-related electron mobility显示文摘Holographic display has attracted widespread interest because of its ability to show the complete information of the object and bring people an unprecedented sense of presence. The absence of ideal recording materials has hampered the realization of their commercial applications. Here we report that the response time of a bismuth and magnesium codoped lithium niobate(LN:Bi,Mg) crystal is shortened to 7.2 ms and a sensitivity as high as 646 cm/J. The crystal was used to demonstrate a real-time holographic display with a refresh rate of 60 Hz, as that of the popular high-definition television. Moreover, the first-principles calculations indicate that the electron mobility while Bi occupying Nb-site is significantly greater than that in Li-site, which directly induces the fast response of LN:Bi,Mg crystals when the concentration of Mg is above its doping threshold. | Shuolin Wang Yidong Shan Dahuai Zheng Shiguo Liu Fang Bo Hongde Liu Yongfa Kong Jingjun Xu | 2022 | Opto-Electronic Advances2022，5，12： | 2 |
| 4 | Fabrication of multilayer films containing 1:12 phosphomolybdic anions on the surface of a gold electrode based on electrostatic interaction and its application as an electrochemical detector in flow-injection amperometric detection of hydrogen peroxide 显示文摘 | SUN Changqing ZHAO Jinghong XU Hongding | 1997 | J Electroanal Chem1997，435，1： | 1 |
| 5 | Studies on the poly(styrene-b-butadiene-b-styrene)/clay nanocomposites prepared by melt intercalation 显示文摘 | Xu Hongde Li Yang Yu Dingsheng | 2005 | Journal of Applied Polymer Science2005，98，1： | 1 |
| 6 | Disulfuration and hydrosulfuration of alkyne at 1,2-dicarba-closo-dodecaborane-thiolate ligand显示文摘 | Ye Hongde Xu Baohua Xie Mingshi | | 0，，24： | 1 |
| 7 | Orange-emitting Ba4R2ZrWO12 : Eu3+ (R= La, Gd, Y) with the stron- gest 5Do--'7Fo transition显示文摘 | Xie Hongde Xu Lin Qin Lin | 2014 | Materials Letters2014，115，： | 1 |
| 8 | Synthesis and Characterization of Polysiloxane and Acrylate Elastomer显示文摘 | Lei Xu Peng Xing Hongde Xie Guohua Xu | 2010 | 材料科学与工程(中英文版)2010，4，3： | 1 |
| 9 | Synthesis of a difunc- tional organolithium compound as initiator for the polymeriza- tion of styrene-hutadiene/isoprene-styrene triblock copolymer 显示文摘 | Lu Zhanxia Xu Hongde Li Yang | 2006 | Journal of Applied Polymer Science2006，100，2： | 1 |
| 10 | Enhanced protective immunity against SARS-CoV-2 elicited by a VSV vector expressing a chimeric spike protein显示文摘SARS-CoV-2 and SARS-CoV are genetically related coronavirus and share the same cellular receptor ACE2.By replacing the VSV glycoprotein with the spikes(S)of SARS-CoV-2 and SARS-CoV,we generated two replication-competent recombinant viruses,rVSVSARS-CoV-2 and rVSV-SARS-CoV.Using wild-type and human ACE2(hACE2)knock-in mouse models,we found a single dose of rVSV-SARS-CoV could elicit strong humoral immune response via both intranasal(i.n.)and intramuscular(i.m.)routes.Despite the high genetic similarity between SARS-CoV-2 and SARS-CoV,no obvious cross-neutralizing activity was observed in the immunized mice sera.In macaques,neutralizing antibody(NAb)titers induced by one i.n.dose of rVSV-SARS-CoV-2 were eight-fold higher than those by a single i.m.dose.Thus,our data indicates that rVSV-SARS-CoV-2 might be suitable for i.n.administration instead of the traditional i.m.immunization in human.Because rVSV-SARS-CoV elicited significantly stronger NAb responses than rVSV-SARS-CoV2 in a route-independent manner,we generated a chimeric antigen by replacing the receptor binding domain(RBD)of SARS-CoV S with that from the SARS-CoV-2.rVSV expressing the chimera(rVSV-SARS-CoV/2-RBD)induced significantly increased NAbs against SARS-CoV-2 in mice and macaques than rVSV-SARS-CoV-2,with a safe Th1-biased response.Serum immunized with rVSV-SARS-CoV/2-RBD showed no cross-reactivity with SARS-CoV.hACE2 mice receiving a single i.m.dose of either rVSV-SARS-CoV-2 or rVSV-SARSCoV/2-RBD were fully protected against SARS-CoV-2 challenge without obvious lesions in the lungs.Our results suggest that transplantation of SARS-CoV-2 RBD into the S protein of SARS-CoV might be a promising antigen design for COVID-19 vaccines. | Hongyue Li Yuhang Zhang Dong Li Yong-Qiang Deng Hongde Xu Chaoyue Zhao Jiandong Liu Dan Wen Jianguo Zhao Yongchun Li Yong Wu Shujun Liu Jiankai Liu Junfeng Hao Fei Yuan Shuguang Duo Cheng-Feng Qin Aihua Zheng | 2021 | Signal Transduction and Targeted Therapy2021，6，12： | 1 |
| 11 | Electrochemical biosensor for simultaneous determination of guanine and adenine based on dopamine melanin colloidal nanospheres-graphene composites显示文摘 | WANG Haibo ZHANG Hongding XU Lulu | 2014 | Journal of Solid State Electrochemistry2014，18，9： | 1 |
| 12 | Preparation and structure and mechanical properties of poly(styrene-b-butadiene)/clay nanoeomposites 显示文摘 | Mingyi Liao Jiedong Zhu Hongde Xu | 2004 | J Appl Polym Sci2004，92，5： | 1 |
| 13 | Syntheses and Characterization of New Chiral Side-Chain Liquid Crystalline Polysiloxanes显示文摘A new seriaI chiral side-chain liquid crystal p0lysiloxanes containing L-Tyr structures were syntheslzed at room temperature. Both of them exhibited Sc phase at room | Tang Hongding Xu Guangwei Zhang Xianliang | 1998 | Wuhan University Journal of Natural Sciences1998，3，2： | 1 |
| 14 | Preparation and structure and mechanical properties of poly(styrene-bbutadiene)/clay Nanocomposites显示文摘 | Mingyi Liao Jiedong Zhu Hongde Xu | 2004 | J Appl Polym Sci2004，92，5： | 1 |
| 15 | Highly efficient on-chip erbium–ytterbium co-doped lithium niobate waveguide amplifiers显示文摘The ability to amplify optical signals is of paramount importance in photonic integrated circuits(PICs). Recently,lithium niobate on insulator(LNOI) has attracted increasing interest as an emerging PIC platform. However, the shortage of efficient active devices on the LNOI platform limits the development of optical amplification. Here,we report an efficient waveguide amplifier based on erbium and ytterbium co-doped LNOI by using electron beam lithography and an inductively coupled plasma reactive ion etching process. We have demonstrated that signal amplification emerges at a low pump power of 0.1 mW, and the net internal gain in the communication band is 16.52 dB/cm under pumping of a 974 nm continuous laser. Benefiting from the efficient pumping facilitated by energy transfer between ytterbium and erbium ions, an internal conversion efficiency of 10% has been achieved, which is currently the most efficient waveguide amplifier under unidirectional pumping reported on the LNOI platform, to our knowledge. This work proposes an efficient active device for LNOI integrated optical systems that may become an important fundamental component of future lithium niobate photonic integration platforms. | YUQI ZHANG QIANG LUO DAHUAI ZHENG SHUOLIN WANG SHIGUO LIU HONGDE LIU FANG BO YONGFA KONG JINGJUN XU | 2023 | Photonics Research2023，11，10： | 0 |
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