Construction of laser heterodyne interferometric bench to measure tiny translation and tilt with picometerand nanoradian-level sensitivity in the millihertz band is critical for the success of spaceborne gravitational...
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Construction of laser heterodyne interferometric bench to measure tiny translation and tilt with picometerand nanoradian-level sensitivity in the millihertz band is critical for the success of spaceborne gravitational wave detection,including the LISA,Taiji,and Tianqin *** this paper,we report on the construction and testing of a laser heterodyne interferometric bench that contains two optical path designs,the dual-beam heterodyne interferometry and the polarization-multiplexing heterodyne *** measurement sensitivity of translation and tilt reaches below 3 pm/Hz^(1/2) and 12 nrad/Hz^(1/2) for frequencies above 10 mHz,*** a technical verification platform,stabilization loops of amplitude and phase and coherence analysis are also conducted through the ***,we demonstrate initial implements of phaselocking technology and multiple degree of freedom measurements as the extended applications of the constructed *** achieved results show that the laser interferometric bench would serve as an excellent experimental platform for the technology demonstration and verification of future Chinese spaceborne gravitational wave detection.
Low-dimensional perovskite(PVK)materials have attracted significant research interest,because of their quantum-confined effect,tunable band gap structures,and higher stability than that of three-dimensional(3D)*** sem...
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Low-dimensional perovskite(PVK)materials have attracted significant research interest,because of their quantum-confined effect,tunable band gap structures,and higher stability than that of three-dimensional(3D)*** semiconductor optoelectronic devices,high speed and small size are closely *** development of high-speed devices requires researchers to fully understand the properties of materials,especially the dynamic processes such as carrier recombination,separation,and transport,which often play a crucial role in the performance of *** an indispensable part of dynamic research,spin relaxation is also of great significance in studying the properties of materials and explore possible *** halide PVK materials have strong spin-orbit coupling(SOC),which provides a basis for information storage and processing by using spin degrees of ***,studying the carrier and spin dynamics of low-dimensional PVKs is an effective way to understand the internal properties of low-dimensional PVKs *** paper summarizes the latest research progress on the ultrafast carrier and spin dynamics in low-dimensional PVKs,to comprehensively understand their carrier and spin behaviors and present an outlook for relevant studies in this area.
The pressure sensors capable of high sensitivity and wide measuring range at high temperature are urgently needed in many industrial fields. We propose a novel fiber-optic Fabry-Pérot interferometer (FPI) probe g...
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The emitter-cavity strong coupling manifests crucial significance for exploiting quantum technology,especially in the scale of individual ***,due to the small light-matter interaction cross-section,the single emitter-...
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The emitter-cavity strong coupling manifests crucial significance for exploiting quantum technology,especially in the scale of individual ***,due to the small light-matter interaction cross-section,the single emitter-cavity strong coupling has been limited by its harsh requirement on the quality factor of the cavity and the local density of optical ***,we present a strategy termed waveguide-assisted energy quantum transfer(WEQT)to improve the single emitter-cavity coupling strength by extending the interaction *** ancillary emitters are optically linked by a waveguide,providing an indirect coupling channel to transfer the energy quantum between target emitter and *** enhancement factor of coupling strength eg=g>10 can be easily achieved,which dramatically release the rigorous design of *** an extension of concept,we further show that the ancillae can be used as controlling bits for a photon gate,opening up new degrees of freedom in quantum manipulation.
The composite time scale(CTS) provides an accurate and stable time-frequency reference for modern science and technology. Conventional CTS always features a centralized network topology, which means that the CTS is ac...
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The composite time scale(CTS) provides an accurate and stable time-frequency reference for modern science and technology. Conventional CTS always features a centralized network topology, which means that the CTS is accompanied by a local master clock. This largely restricts the stability and reliability of the CTS. We simulate the restriction and analyze the influence of the master clock on the CTS. It proves that the CTS's long-term stability is also positively related to that of the master clock, until the region dominated by the frequency drift of the H-maser(averaging time longer than ~10~5s).Aiming at this restriction, a real-time clock network is utilized. Based on the network, a real-time CTS referenced by a stable remote master clock is achieved. The experiment comparing two real-time CTSs referenced by a local and a remote master clock respectively reveals that under open-loop steering, the stability of the CTS is improved by referencing to a remote and more stable master clock instead of a local and less stable master clock. In this way, with the help of the proposed scheme, the CTS can be referenced to the most stable master clock within the network in real time, no matter whether it is local or remote, making democratic polycentric timekeeping possible.
We introduce random laser into a single-fiber image transmission system for the first time. High-quality transmission of complex grayscale patterns is achieved with inverse transmission matrix. It provides guidance fo...
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The all-fiber lensless microimaging scheme was experimentally demonstrated for the first time. Natural scenes reconstruction and distance detection are implemented with dual networks and partially diffuse speckles. Hi...
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We introduce random laser into a single-fiber image transmission system for the first time. High-quality transmission of complex grayscale patterns is achieved with inverse transmission matrix. It provides guidance fo...
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The all-fiber lensless microimaging scheme was experimentally demonstrated for the first time. Natural scenes reconstruction and distance detection are implemented with dual networks and partially diffuse speckles. Hi...
One-dimensional semiconductor materials possess excellent photoelectric properties and potential for the construction of integrated nanodevices. Among them, Sn-doped CdS has different micro-nano structures, including ...
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One-dimensional semiconductor materials possess excellent photoelectric properties and potential for the construction of integrated nanodevices. Among them, Sn-doped CdS has different micro-nano structures, including nanoribbons,nanowires, comb-like structures, and superlattices, with rich optical microcavity modes, excellent optical properties, and a wide range of application fields. This article reviews the research progress of various micrometer structures of Sn-doped CdS, systematically elaborates the effects of different growth conditions on the preparation of Sn-doped CdS micro-nano structures, as well as the spectral characteristics of these structures and their potential applications in certain fields. With the continuous progress of nanotechnology, it is expected that Sn-doped CdS micro-nano structures will achieve more breakthroughs in the field of optoelectronics and form cross-integration with other fields, jointly promoting scientific, technological, and social development.
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