Results 1 to 10 of about 5,286,668 (304)
A continuum of bright and dark-pulse states in a photonic-crystal resonator
Nature Communications, 2022 A Kerr-nonlinear resonator with normal dispersion supports bright and dark pulse states. With photonic crystal ring resonators, this work demonstrates a continuum across these nonlinear states and explores the underlying mechanism.
Su-Peng Yu +3 more
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Applied Sciences, 2021 The self-comparison method is a powerful tool in the uncertainty evaluation of optical lattice clocks, but any drifts will cause a frequency offset between the two compared clock loops and thus lead to incorrect measurement result.
Chihua Zhou +4 more
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Demonstration of a time scale with the 87Sr optical lattice clock at NTSC
AIP Advances, 2023 Optical clocks have been applied to the generation of time scales since they provide superb uncertainty and instability in recent years. This paper presents the simulations about the impact of the optical clockâs operational strategies on the performance
Qinfang Xu +6 more
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Efforts towards a low-temperature-sensitive physics package for vapor cell atomic clocks
Satellite Navigation, 2020 Strong environmental dependence is an intractable problem for vapor cell clocks, for which the high-temperature sensitivity of the physics package is considered one of the dominant reasons.
Qiang Hao +5 more
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Applied Sciences, 2022 Accurately manipulating quantum states is a fundamental strategy for improving the performance of quantum metrology, computing, and simulation. However, the quantum state is susceptible to dephasing due to the temperature and density of the atomic ...
Feng Guo +3 more
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Development of an Interference Filter-Stabilized External-Cavity Diode Laser for Space Applications
Photonics, 2020 The National Time Service Center of China is developing a compact, highly stable, 698 nm external-cavity diode laser (ECDL) for dedicated use in a space strontium optical clock. This article presents the optical design, structural design, and preliminary
Linbo Zhang +6 more
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382 mW External-Cavity Frequency Doubling 461 nm Laser Based on Quasi-Phase Matching
Photonics, 2023 To rapidly improve strontium optical clocks, a high-power, high-efficiency, and high-beam-quality 461 nm laser is required. In blue lasers based on periodically poled KTiOPO4 crystals, the optical absorption in the crystals can induce thermal effects ...
Yingxin Chen +3 more
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Applied Sciences, 2020 The Zeeman shift plays an important role in the evaluation of optical lattice clocks since a strong bias magnetic field is applied for departing Zeeman sublevels and defining a quantization axis.
Xiaotong Lu +4 more
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Broadband 1-GHz mid-infrared frequency comb
Light: Science & Applications, 2022 Mid-infrared (MIR) spectrometers are invaluable tools for molecular fingerprinting and hyper-spectral imaging. Among the available spectroscopic approaches, GHz MIR dual-comb absorption spectrometers have the potential to simultaneously combine the high ...
Nazanin Hoghooghi +6 more
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Chip-Scale Ultra-Low Field Atomic Magnetometer Based on Coherent Population Trapping
Sensors, 2021 We report a chip-scale atomic magnetometer based on coherent population trapping, which can operate near zero magnetic field. By exploiting the asymmetric population among magnetic sublevels in the hyperfine ground state of cesium, we observe that the ...
Hyun-Gue Hong +7 more
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