A5101888067- Spectroscopy and Laser Applications
- Adaptive optics and wavefront sensing
- CCD and CMOS Imaging Sensors
- Astronomy and Astrophysical Research
- Infrared Target Detection Methodologies
- Stellar, planetary, and galactic studies
- Photonic and Optical Devices
- Astronomical Observations and Instrumentation
- Advanced Fiber Laser Technologies
- Advanced Optical Sensing Technologies
- Calibration and Measurement Techniques
- Optical Systems and Laser Technology
- Advancements in PLL and VCO Technologies
- Particle Detector Development and Performance
- Advanced Sensor and Control Systems
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Microstructure and mechanical properties
- Semiconductor Lasers and Optical Devices
- Evaluation and Optimization Models
- Advanced ceramic materials synthesis
- Quantum Information and Cryptography
- Embedded Systems and FPGA Design
- Industrial Technology and Control Systems
- Innovative concrete reinforcement materials
Army Medical University
2024-2025
University of Science and Technology of China
2014-2024
Tsinghua University
2017-2024
Space Engineering University
2023-2024
Geological Exploration Technology Institute of Jiangsu Province
2024
Zhejiang University of Technology
2024
State Grid Corporation of China (China)
2024
Anhui University of Science and Technology
2010-2023
Leiden University
2023
Chinese Academy of Sciences
2021
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST's design allows both large aperture (effective of 3.6 m–4.9 m) and wide field view (FOV) (5°). It has an innovative active configuration which continuously changes mirror's surface that adjusts during observation process combines thin deformable mirror optics with segmented optics. Its primary (6.67 m × 6.05 (5.74m 4.40m) are...
The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra stars, galaxies QSOs. Objects both in pilot first year general are included LAMOST First Data Release (DR1). started October 2011 ended June 2012, data have been released to public as Pilot August 2012. September completed its operation 2013. DR1 includes total 1202 plates containing...
We present a high-quality, bias-free quantum random number generator (QRNG) using photon arrival time selectively in accordance with the of detection events within sampling interval attenuated light. It is well showed both theoretical analysis and experiments verification that this production method eliminates bias correlation perfectly without more post processing can clearly pass standard randomness tests. fulfill experimental whose rate reach up to 45Mbps.
Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single photon detectors. Recently, several proof-of-principle demonstrations of MDIQKD have been achieved. Those experiments, although novel, are implemented through limited distance a rate less than 0.1 bps. Here, by developing 75 MHz clock fully-automatic highly-stable system, superconducting nanowire...
Line-of-sight diode-laser absorption techniques have been extended to enable temperature measurements in nonuniform-property flows. The sensing strategy for such flows exploits the broad wavelength-scanning abilities (>1.7 nm approximately 30 cm(-1)) of a vertical cavity surface-emitting laser (VCSEL) interrogate multiple transitions along single line sight. To demonstrate strategy, VCSEL-based sensor oxygen gas distributions was developed. A VCSEL beam directed through paths containing...
Wurtzite aluminum nitride (AlN) is known to exhibit six Raman-active optic phonons, making it appealing for Raman lasing. Here, we demonstrate continuous-wave lasers with a low threshold and high slope efficiency in quality factor AlN-on-sapphire microrings. Stokes radiations around 1.7–1.8 μm cascaded operation into 1.9–2.0 μm are identified telecom pump. Two types of lights distinct shifts polarizations recorded via selective excitation corresponding accordance the selection rules AlN. The...
A real-time Quantum Key Distribution System is developed in this paper. In the system, based on feature of Field Programmable Gate Array (FPGA), secure key extraction control and algorithm have been optimally designed to perform sifting, error correction privacy amplification altogether real-time. QKD experiment information synchronization mechanism high-speed classic data channel are ensure steady operation system. Decoy state synchronous laser light source used while length optical fiber...
The main type of obstacles practical applications quantum key distribution (QKD) network are various attacks on detection. Measurement-device-independent QKD (MDIQKD) protocol is immune to all these attacks, and thus, a strong candidate for security. Recently, several proof-of-principle demonstrations MDIQKD have been performed. Although novel, those experiments implemented in the laboratory with secure rates less than 0.1 b/s. Besides, they need manual calibration frequently maintain system...
In situ measurements of CO concentration were recorded with tunable diode-laser absorption spectroscopy techniques in both the exhaust and immediate post-flame regions an atmospheric-pressure flat-flame burner operating on ethylene air. Two room-temperature cw single-mode InGaAsSb/AlGaAsSb diode lasers near 2.3 µm tuned over individual transitions first overtone band (v′ = 2 ← v″ 0) to record high-resolution line shapes duct [79 cm above burner, ∼470 K; R(15) transition at 4311.96 cm-1]...
Abstract High-cadence, multiwavelength observations have continuously revealed the diversity of tidal disruption events (TDEs), thus greatly advancing our knowledge and understanding TDEs. In this work, we conducted an intensive optical-UV X-ray follow-up campaign TDE AT 2023lli found a remarkable month-long bump in its UV/optical light curve nearly 2 months prior to maximum brightness. The represents longest separation time from main peak among known TDEs date. outburst declines as t −4.10...
Abstract Thanks to the rapidly increasing time-domain facilities, we are entering a golden era of research on gamma-ray bursts (GRBs). In this Letter, report our observations GRB 240529A with Burst Optical Observer and Transient Exploring System, 1.5 m telescope at Observatorio de Sierra Nevada, 2.5 Wide Field Survey Telescope China, Large Binocular Telescope, Telescopio Nazionale Galileo. The prompt emission shows two comparable energetic episodes separated by quiescence time roughly 400 s....
Abstract The Kibble-Zurek mechanism is the paradigm to account for nonadiabatic dynamics of a system across continuous phase transition. Its study in quantum regime hindered by requisite ground state cooling. We report experimental simulation critical transverse-field Ising model set Landau-Zener crossings pseudo-momentum space, that can be probed with high accuracy using single trapped ion. test momentum space and find measured scaling excitations accordance theoretical prediction.
A newly developed, qualitative and quantitative method based on tunable synchrotron radiation vacuum ultraviolet photoionization time-of-flight mass spectrometry (SR-VUV-PI-TOFMS) efficiency (PIE) curve simulation was applied for the online analysis of isomers isobaric compounds in gas phase mainstream cigarette smoke. After blocking particulate components by Cambridge filter pad, a puff fresh gas-phase smoke immediately introduced into ionization chamber through heated capillary, then...
ABSTRACT The tissue analog targets (TATs) are widely used in biodamage and weapon damage effectiveness evaluation research. Given the issues of commonly TATs, such as low plasticity gelatin environmental pollution caused by fabrication soap, this paper innovatively proposes to use paraffin raw material for making TATs. Firstly, target samples prepared melt casting process, quasi‐static mechanical properties, antibullet corresponding ballistic characteristics obtained MTS test 7.62 mm gun...
This paper presents a photovoltaic (PV) system parallel connected to an electric power grid with factor corrector (PFC) for supplying the DC loads. The operation principles and design considerations presented PV are analyzed discussed. balanced distribution of flows between utility panels is achieved automatically by regulating output voltage PFC. Experimental results shown verify feasibility proposed topology, which can effectively transfer tracked maximum from load, while unity obtained at side.
On-chip frequency upconversion of a near-infrared (NIR) Kerr comb in χ(2) and χ(3) system provides convenient route to extending the spectra into visible band. Yet date, only limited or near-visible lines have been obtained using this scheme. In work, we demonstrate generation multiple based on spectral translation from broadband NIR comb. This physical process is implemented an aluminum nitride (AlN)-on-sapphire microring, where achieve wideband by incorporating phase-mismatched fundamental...
The potential for on-road remote sensing of vehicle exhausts using 2.3 µm diode-laser-absorption-based CO sensors is examined. Using a wavelength-modulation- spectroscopy (WMS) technique, 20 ppm sensitivity with detection bandwidth ≃1.5 kHz demonstrated in laboratory experiments, which implies the ability to monitor emissions from even cleanest combustion-powered vehicles. influence temperature and composition exhaust gas on inferred concentration through both linestrength linewidth also...
For unattended telescopes in Antarctic, the remote operation, autonomous observation and control are essential. An EPICS-(Experimental Physics Industrial Control System) RTS2-(Remote Telescope System, 2nd Version) based system with remoted operation is introduced this paper. EPICS a set of open source software tools, libraries applications developed collaboratively used worldwide to create distributed soft real-time systems for scientific instruments while RTS2 an environment fully...