14 Result(s)
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Article
YuQiang **ang
Physics
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Article
Anomalous enhancement of the Nernst effect at the crossover between a Fermi liquid and a strange metal
A strange-metal state appears in many strongly correlated materials, so understanding its nature is a crucial problem in condensed matter physics. This knowledge could provide important insight into high-tempe...
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Spin–orbit–parity coupled superconductivity in atomically thin 2M-WS2
The investigation of two-dimensional atomically thin superconductors—especially those hosting topological states—attracts growing interest in condensed-matter physics. Here we report the observation of spin–or...
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A High-Sensitivity Two-Loop Sensor for Measurements of Displacement and Refractive Index
We design a high-sensitivity optical-fiber sensor for measurements of displacement and refractive index based on dual-coating-stripped loop-shaped single-mode fibers. For this, we produced two unrelated interf...
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Passive Q-Switched Operation of a Tm:YAP Laser with the MoSe2 Saturable Absorber
The passively Q-switched (PQS) operation of a Tm:YAP laser was experimentally demonstrated with an MoSe2 saturable absorber (SA). In the PQS mode, an average output power of 1.084/1.744 W with a pulse width of 68...
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Evidence of anisotropic Majorana bound states in 2M-WS2
Searching for Majorana bound states has become an important topic because of its potential applications in topological quantum computing. 2M-phase WS2, a newly synthesized superconductor, not only presents the hi...
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All-Fiber Fabry–Perot Interferometer for Liquid Refractive Index Measurement
We propose and design an all-fiber Fabry–Perot interferometer (FPI) for liquid refractive index (RI) measurements. The sensor comprises a short section of a single-mode fiber (SMF) fused between the end sectio...
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Passive Q-Switched Operation of a c-Cut Tm,Ho:LuVO4 Laser with a Few-Layer WSe2 Saturable Absorber
We demonstrate experimentally a passive Q-switched (PQS) operation of 2 μm c-cut Tm,Ho:LuVO4 laser with a WSe2 saturable absorber (SA) mirror. We obtain an average output power of 500 mW with a pulse width of 3.5...
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Ultrasensitive Temperature Sensor Based on Fiber-Optic Fabry–Pérot Interferometer with Vernier Effect
We propose and demonstrate an ultrasensitive temperature sensor based on a fiber-optic Fabry–Pérot interferometer (FPI) with the Vernier effect. The sensor is prepared by splicing a section of silica tube and ...
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Article
High beam quality of a Q-switched 2-µm Tm,Ho:LuVO4 laser
A diode-end-pumped 2.05-µm Q-switched Tm,Ho:LuVO4 laser is reported in this paper. The cryogenic Tm3+ (5.0 at.%),Ho3+ (0.5 at.%):LuVO4 crystal was pumped by an 800-nm laser diode. At a pulse repetition frequency ...
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Article
Effect of ordered B-site cations on the structure, elastic and thermodynamic properties of KTa0.5Nb0.5O3 crystal
BO6 oxygen octahedral was considered as the key part in ABO3 perovskite structure, and the electro-optical, elastic and thermodynamic properties of potassium tantalate niobate (KTa0.5Nb0.5O3, abbreviated as KTN) ...
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Article
A High-Power, Long-Wavelength Infrared ZnGeP2 Opo Pumped by a Q-Switched Tm,Ho:GdVO4 Laser
We report a high-power, long-wavelength infrared ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumped by a Q-switched Tm,Ho:GdVO4 laser. The wavelength tuning range of 7.8–9.9 μm is realized by rotating the ex...
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Article
Performance of Extrinsic Fabry–Perot Interferometer Based on Graded-Index Lenses for a Fabry–Perot Cavity with Surface Errors
Interference contrast is an important parameter for extrinsic Fabry–Perot interferometer (EFPI) based on graded index (GRIN) lenses. It determines the signal-to-noise ratio (SNR) and the measurement accuracy. ...
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Article
Strehl ratio versus localized distortion in reflectors in lasercom
In intersatellite laser communication (lasercom), the Strehl ratio (SR) is usually used to characterize the transmitter-beam quality. We study its dependence on localized distortion in reflectors based on the ...
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Article
Nonlinear optical effects in trap** nanoparticles with femtosecond pulses
The optical trap** technique has been widely used in various areas to manipulate particles, cells, and so forth. The principle of trap** is based on the interaction between optical electric fields and indu...
