A5079093083- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear physics research studies
- Advanced Frequency and Time Standards
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- Quantum Information and Cryptography
- Spectroscopy and Laser Applications
- Advanced Fiber Laser Technologies
- Nuclear Physics and Applications
- Photorefractive and Nonlinear Optics
- Solid State Laser Technologies
- Orbital Angular Momentum in Optics
- Astronomical and nuclear sciences
- Advanced Chemical Physics Studies
- Lightning and Electromagnetic Phenomena
- Insect and Pesticide Research
- Tree-ring climate responses
- Rare-earth and actinide compounds
- Fire dynamics and safety research
- Geology and Paleoclimatology Research
- Hydrology and Drought Analysis
- Optical Network Technologies
- Insect and Arachnid Ecology and Behavior
Shanxi University
2011-2025
Anhui Normal University
2024
Shanxi University of Traditional Chinese Medicine
2011-2024
State Key Laboratory of Quantum Optics and Quantum Optics Devices
2008-2022
Peking University
2014-2022
State Key Laboratory of Nuclear Physics and Technology
2014-2022
Beijing University of Agriculture
2019
Jiujiang University
2017
Guilin University of Technology
2017
In a recent breakup-reaction experiment using Be12 beam at 29 MeV/nucleon, the 0+ band head of expected He4+He8 molecular rotation was clearly identified about 10.3 MeV, from which large monopole matrix element 7.0±1.0 fm2 and cluster-decay width were determined for first time. These findings support picture strong clustering in Be12, has been subject intense investigations over past decade. The results obtained thanks to specially arranged detection system around zero degrees, is essential...
An inelastic excitation and cluster-decay experiment $^{2}\mathrm{H}(^{16}\mathrm{C},^{4}\mathrm{He}+^{12}\mathrm{Be}\text{ }\text{or}\text{ }^{6}\mathrm{He}+^{10}\mathrm{Be})^{2}\mathrm{H}$ was carried out to investigate the linear-chain clustering structure in neutron-rich $^{16}\mathrm{C}$. For first time, decay paths from $^{16}\mathrm{C}$ resonances various states of final nuclei were determined, thanks well-resolved $Q$-value spectra obtained threefold coincident measurement. The...
An inelastic excitation experiment was performed with a $^{12}\mathrm{Be}$ beam at 29 MeV/u on carbon target. New resonances close to the respective cluster separation thresholds were observed in for $^{4}\mathrm{He}+^{8}\mathrm{He}$ and $^{6}\mathrm{He} + ^{6}\mathrm{He}$ decay channels, confirming previously proposed molecular rotational bands. Using model-independent angular correlation analysis, ${0}^{+}$ spin parity is assigned remarkably large peak 10.3 MeV $^{4}\mathrm{He}...
A cluster-transfer experiment 9Be(9Be,14C∗→α+10Be)4He was carried out using an incident beam energy of 45 MeV. This reaction channel has a large Q value that favors populating the high-lying states in 14C and separating various channels. number resonant are reconstructed from forward-emitting 10Be+α fragments with respect to three sets well-discriminated final 10Be, most which agree previous observations. state at 22.5(1) MeV is found decay predominantly into around 6 10Be daughter nucleus,...
We demonstrate the generation of polychromatic and collimated lights at 456 nm, 459 761 nm based on cesium (
Spin alignment based Rb-87 magnetometry with free spin precession has been proposed. A 795-nm linearly polarized laser beam, serving as the pump beam and probe propagates through a cylindrical enriched atomic vapor cell along Z axis, polarization orientation aligned Y axis. Simultaneously, static magnetic field B0⃗ is applied π/2 pulse radio-frequency (RF) BRF⃗ Given that direction aligns field, exhibits π polarization. This induces symmetric population distribution of ground-state atoms...
Based on the cesium $6{S}_{1/2}$-$6{P}_{3/2}$-$8{S}_{1/2}$ ladder-type atomic system, double-resonance optical pumping (DROP) spectra including electromagnetically induced transparency (EIT) effects have been investigated with a room-temperature vapor cell. For both cases of probe and coupling laser beams passing through cell counter-propagation (CTP) co-propagation (CP) configurations, DROP measured in experiment display explicitly different linewidths. Thanks to EIT effect, linewidth...
We present an investigation of electromagnetically induced transparency (EIT) without Doppler background due to a locked probe laser. The EIT is theoretically studied based on multilevel ladder-type cesium atomic system 6${S}_{1/2}$--6${P}_{3/2}$--8${S}_{1/2}$ in room-temperature vapor cell. experimental results agree with the theoretical calculations. Compared traditional spectra profile limiting spectral resolution for keeping coupling laser and scanning laser, these scanned have flat...
We report on efficient generation of second harmonic laser and single-mode vacuum squeezed light 795 nm with periodically poled KTiOPO4 (PPKTP) crystals. achieved 111 mW ultra-violet (UV) at 397.5 from 191 fundamental a PPKTP crystal in doubling cavity, corresponding to conversion efficiency 58.1%. Using the UV pump an optical parametric oscillator crystal, we realized -5.6 dB maximum squeezing. analyzed power dependence squeezing level concluded that induced losses limit improvement level....
New measurements of proton/deuteron elastic and inelastic scattering to the ${2}_{1}^{+}$ state neutron-rich nucleus $^{16}\mathrm{C}$ have been performed at Radioactive Ion Beam Line in Lanzhou (RIBLL) inverse kinematics. The angular distributions were well reproduced by systematic optical potential with normalization factors for depths real imaginary parts. neutron proton deformation lengths ${\ensuremath{\delta}}_{n}=1.25\ifmmode\pm\else\textpm\fi{}0.30$ fm...
The hyperfine structure (hfs) splittings of the $4{D}_{5/2}$ state for two isotopes $^{87}\mathrm{Rb}$ and $^{85}\mathrm{Rb}$ atoms are measured based on double-resonance optical pumping spectra in a $5{S}_{1/2}\text{\ensuremath{-}}5{P}_{3/2}\text{\ensuremath{-}}4{D}_{5/2}$ ladder-type atomic system. frequency calibration is performed by employing wideband fiber-pigtailed phase-type electro-optic modulator together with Fabry-P\'erot cavity to cancel error arising from nonlinear scanning....
A cluster-transfer experiment of $^9\rm{Be}(^9\rm{Be},^{14}\rm{C}\rightarrow\alpha+^{10}\rm{Be})\alpha$ at an incident energy 45 MeV was carried out in order to investigate the molecular structure high-lying resonant states $^{14}$C. This reaction is extremely large $Q$-value, making it excellent case select mechanism and final outgoing nuclei. The resonances $^{14}$C are reconstructed for three sets well discriminated $^{10}$Be. results confirm previous decay measurements with clearly...
Measurements of the 2H(16C,16C∗→4He+12Be or 6He+10Be)2H inelastic excitation and cluster-decay reactions have been carried out at a beam energy about 23.5 MeV/u. A specially designed detection system, including one multilayer silicon-strip telescope around zero degrees, has allowed high-efficiency threefold coincident therefore event-by-event determination unstable nucleus beam. The decay paths from 16C resonances to various states final 10Be 12Be are recognized thanks well-resolved Q-value...
A multinucleon transfer and cluster-decay experiment, namely 9Be(13C,18O∗→14C+α)α, was performed at a beam energy of 65 MeV. Resonant states in 18O from 7 to 19 MeV, including some newly observed ones, are reconstructed with high resolution, based on the coincident detection various combinations final fragments. The α-decay branching ratios for 14 extracted both invariant-mass missing-mass measurements. Angular correlation analysis conducted 10.3-MeV (4+) state. present work supports...
We report on the frequency doubling of a tapered amplifier-boosted distributed-Bragg-reflector continuous-wave laser system at 795 nm, using PPKTP crystal placed in an external ring cavity. A tunable 397.5 nm violet power 130 mW with mode-matched input 416 is obtained (conversion efficiency η=31%), limited by thermally induced bistability. However, when maximum output, stable operation more than 30 min hard to reach due thermal effects. With scanning cavity, peak rises up 180 mW,...
We report the hyperfine splitting (HFS) measurement of cesium (Cs) 7S1/2 state by optical-optical double-resonance spectroscopy in 6S1/2-6P3/2-7S1/2 (852 nm + 1470 nm) ladder-type system. The HFS frequency calibration is performed employing a phase-type waveguide electro-optic modulator together with stable confocal Fabry-Perot cavity. From measured between F"= 3 and 4 manifolds Cs [HFS = 2183.273(37) MHz], we have determined magnetic dipole coupling constant [A 545.818(09) which good...
We demonstrate a simple, compact and cost-efficient diode laser pumped frequency doubling system at 795 nm in the low power regime. In two configurations, bow-tie four-mirror ring enhancement cavity with PPKTP crystal inside semi-monolithic cavity, we obtain 397.5nm ultra-violet coherent radiation of 35mW 47mW respectively mode-matched fundamental about 110mW, corresponding to conversion efficiency 32% 41%. The loss leads better results. constructed has good stability beam quality, huge...
In a Doppler-broadened ladder-type cesium atomic system (6S1/2-6P3/2-8S1/2), this paper characterizes electromagnetically induced transparency (EIT) in two different experimental arrangements, and investigates the influence of double-resonance optical-pumping (DROP) effect on EIT both arrangements. When probe laser is weak, DROP explicitly suppressed. moderate, population intermediate level (6P3/2 F' = 5) remarkable, therefore mixed with EIT. An interesting bimodal spectrum broad component...
By optical injection of an 852-nm extended-cavity diode laser (master laser) to lock the + 1-order sideband a ~9-GHz-current-modulated (slave laser), we generate pair phase-locked lasers with frequency difference up ~9-GHz for cesium (Cs) magneto-optical trap (MOT) convenient tuning capability. For MOT, master acts as repumping laser, locked Cs 6S₁/₂ (F = 3) - 6P₃/₂ (F' 4) transition. When 8.9536-GHz-current-modulated slave is optically injection-locked, carrier operates on 5) cooling cycle...
Experimental results of the $^{1}\mathrm{H}(^{13}\mathrm{B},d)^{12}\mathrm{B}$ transfer reaction to low-lying states in $^{12}\mathrm{B}$ are reported. The optical potential parameters for entrance channel extracted from elastic scattering $^{1}\mathrm{H}(^{13}\mathrm{B},\phantom{\rule{0.16em}{0ex}}p)$ measured same experiment, while those exit global ones. Spectroscopic factors associated with $p$-, $s$-, and $d$-wave neutron known by comparing deuteron angular distributions calculation...
We investigate the low-lying positive-parity states in $^{12}\mathrm{Be}$, which are populated by $^{2}\mathrm{H}(^{13}\mathrm{B}$, $^{3}\mathrm{He})$ reaction via $l=1$ proton transfer for first time using a radioactive beam $^{13}\mathrm{B}$ at 23 MeV/nucleon. Spectroscopic factors and excitation energies of these reasonable agreement with shell model predictions. Besides two bound states, we observe resonant state...
A puzzle has long existed for the $\alpha$-cluster content in near-threshold 7.54 MeV state of $^{10}$Be. new measurement was conducted to measure cluster-decay partial width this state, using reaction $\rm{^9Be}(\rm{^9Be}, \rm{^{10}Be}^{*} \rightarrow \alpha + \rm{^6He})\rm{^8Be}$ at 45 beam energy. Special measures were taken reduce strong background. The neutron-decay strength also obtained based on three-fold coincident measurement. branching ratio $(4.04 \pm 1.26)\times 10^{-4}$ is...