We report on a high-power Ho:YAG single-crystal fiber(SCF)laser inband pumped by a high-brightness Tm-fiber laser at 1908 nm.The Ho:YAG SCF grown by the micro-pulling-down technique exhibits a propagation loss of 0.05...We report on a high-power Ho:YAG single-crystal fiber(SCF)laser inband pumped by a high-brightness Tm-fiber laser at 1908 nm.The Ho:YAG SCF grown by the micro-pulling-down technique exhibits a propagation loss of 0.05±0.005 cm^-1 at 2.09μm.A continuous-wave output power of 35.2 W is achieved with a slope efficiency of 42.7%,which is to the best of our knowledge the highest power ever reported from an SCF-based laser in the 2µm spectral range.展开更多
Hybrid organic–inorganic perovskites(HOIPs)are introducing exotic directions in the photovoltaic materials landscape.The coexistence of inversion symmetry breaking and spin–orbit interactions play a key role in thei...Hybrid organic–inorganic perovskites(HOIPs)are introducing exotic directions in the photovoltaic materials landscape.The coexistence of inversion symmetry breaking and spin–orbit interactions play a key role in their optoelectronic properties.We perform a detailed study on a recently synthesized ferroelectric layered HOIP,(AMP)PbI_(4)(AMP=4-aminomethyl-piperidinium).The calculated polarization and Rashba parameters are in excellent agreement with experimental values.展开更多
基金Foundation of Deutscher Akademischer Austauschdienst(DAAD)–Research Stays for University Academics and Scientists(57381327)Natural Science Foundation of Jiangsu Province,China(SBK2019030177)+1 种基金China Scholarship Council(201704910363)Foundation of the Government of the Russian Federation(074-U01).
文摘We report on a high-power Ho:YAG single-crystal fiber(SCF)laser inband pumped by a high-brightness Tm-fiber laser at 1908 nm.The Ho:YAG SCF grown by the micro-pulling-down technique exhibits a propagation loss of 0.05±0.005 cm^-1 at 2.09μm.A continuous-wave output power of 35.2 W is achieved with a slope efficiency of 42.7%,which is to the best of our knowledge the highest power ever reported from an SCF-based laser in the 2µm spectral range.
基金This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No.713679 and from the Universitat Rovira i Virgili(URV)J.M.P.and C.d.G thank the Spanish Ministry of Science(grants CTQ2017-87269-P and CTQ2017-83566-P)+3 种基金the Generalitat de Catalunya(grant 2017SGR629)for supportJ.M.P.also thanks ICREA foundation for an ICREA ACADEMIA awardH.G.acknowledges support from the National Postdoctoral Program for Innovative Talents(No.BX20190361)Guangdong Basic and Applied Basic Research Foundation(No.2019A1515110965).
文摘Hybrid organic–inorganic perovskites(HOIPs)are introducing exotic directions in the photovoltaic materials landscape.The coexistence of inversion symmetry breaking and spin–orbit interactions play a key role in their optoelectronic properties.We perform a detailed study on a recently synthesized ferroelectric layered HOIP,(AMP)PbI_(4)(AMP=4-aminomethyl-piperidinium).The calculated polarization and Rashba parameters are in excellent agreement with experimental values.
