A5076287552- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum Mechanics and Non-Hermitian Physics
- Photonic Crystals and Applications
- Advanced Fiber Laser Technologies
- Nonlinear Photonic Systems
- Metamaterials and Metasurfaces Applications
- Strong Light-Matter Interactions
- Perovskite Materials and Applications
- Orbital Angular Momentum in Optics
- Mechanical and Optical Resonators
- Nanowire Synthesis and Applications
- Quantum Dots Synthesis And Properties
- Topological Materials and Phenomena
- Metal-Organic Frameworks: Synthesis and Applications
- Optical Network Technologies
- Near-Field Optical Microscopy
- Molecular Sensors and Ion Detection
- Quantum chaos and dynamical systems
- ZnO doping and properties
- Advanced Photonic Communication Systems
- Neural Networks and Reservoir Computing
- Supramolecular Self-Assembly in Materials
- Quantum optics and atomic interactions
Peking University
2015-2024
Sichuan University of Science and Engineering
2024
Collaborative Innovation Center of Quantum Matter
2016-2022
University of California, Berkeley
2010-2015
Lawrence Berkeley National Laboratory
2012
Material Sciences (United States)
2012
Vancouver Clinic
2011
Chinese Academy of Sciences
2007
Xi'an University of Architecture and Technology
1996
Case Western Reserve University
1971
Effective manipulation of cavity resonant modes is crucial for emission control in laser physics and applications. Using the concept parity-time symmetry to exploit interplay between gain loss (i.e., light amplification absorption), we demonstrate a symmetry-breaking with that can be controlled at will. In contrast conventional ring lasers multiple competing modes, our microring exhibits intrinsic single-mode lasing regardless spectral bandwidth. Thresholdless breaking due rotationally...
Abstract Electro-optic modulators have been identified as the key drivers for optical communication and signal processing. With an ongoing miniaturization of photonic circuitries, outstanding aim is to demonstrate on-chip, ultra-compact, electro-optic modulator without sacrificing bandwidth modulation strength. While silicon-based demonstrated, they require large device footprints order millimeters a result weak non-linear electro-optical properties. The strength can be increased by...
Abstract Plasmon lasers are a new class of coherent optical frequency electromagnetic wave amplifiers that deliver intense, and directional surface plasmons well below the diffraction barrier. The strongly confined electric fields in plasmon can enhance significantly light‐matter interactions bring fundamentally capabilities to bio‐sensing, data storage, photolithography communications.
Levitated optomechanics has great potentials in precision measurements, thermodynamics, macroscopic quantum mechanics and sensing. Here we synthesize optically levitate silica nanodumbbells high vacuum. With a linearly polarized laser, observe the torsional vibration of an levitated nanodumbbell The linearly-polarized optical tweezer provides restoring torque to confine orientation nanodumbbell, analog torsion wire which for suspended lead spheres Cavendish balance. Our calculation shows its...
Abstract The best performing modern optoelectronic devices rely on single‐crystalline thin‐film (SC‐TF) semiconductors grown epitaxially. emerging halide perovskites, which can be synthesized via low‐cost solution‐based methods, have achieved substantial success in various including solar cells, lasers, light‐emitting diodes, and photodetectors. However, to date, the performance of these perovskite based polycrystalline active layers lags behind epitaxially semiconductor devices. Here, a...
Flexible optoelectronic devices attract considerable attention due to their prominent role in creating novel wearable apparatus for bionics, robotics, health care, and so forth. Although bulk single-crystalline perovskite-based materials are well-recognized the high photoelectric conversion efficiency than polycrystalline ones, stiff brittle nature unfortunately prohibits application flexible devices. Here, we introduce ultrathin perovskite film as active layer demonstrate a high-performance...
Here we present a roadmap on Photonic metasurfaces. This document consists of number perspective articles different applications, challenge areas or technologies underlying photonic Each will introduce the topic, state art as well give an insight into future direction subfield.
With unprecedented ability to localize electromagnetic field in time and space, the nanometer scale laser promises exceptionally broad scientific technological innovation. However, as cavity becomes subwavelength, diffraction of light prohibits directional emission, so-called directionality, one fundamental attributes laser. Here, we have demonstrated a deep subwavelength waveguide embedded (WEB) plasmon that directs more than 70% its radiation into an semiconductor nanobelt with...
Plasmonic nanolasers are a new class of amplifiers that generate coherent light well below the diffraction barrier bringing fundamentally capabilities to biochemical sensing, super-resolution imaging, and on-chip optical communication. However, debate about whether metals can enhance performance lasers has persisted due unavoidable fact metallic absorption intrinsically scales with field confinement. Here, we report plasmonic extremely low thresholds on order 10 kW cm-2 at room temperature,...
Spin-momentum locking is a direct consequence of bulk topological order and provides basic concept to control carrier's spin charge flow for new exotic phenomena in condensed matter physics. However, up date the research on spin-momentum solely focuses its in-plane transport properties. Here, we report an emerging out-of-plane radiation feature non-Hermitian photonic system demonstrate high performance vortex laser based it. We find that gain saturation effect lifts degeneracy paired...
Abstract Van der Waals layered semiconductor materials own unique physical properties and have attracted intense interest in developing high‐performance electronic photonic devices. Among them, black phosphorus (BP) is distinct for its layer number‐tuned direct band gap which spans from near‐ to mid‐infrared (MIR) waveband. In addition, the puckered honey comb crystal lattice endows material with highly linear‐polarized emission marked anisotropy carrier transportation. These render BP as an...
A high-performance NOT logic gate (inverter) was constructed by combining two identical n-channel metal−semiconductor field-effect transistors (MESFETs) made on a single CdS nanowire (NW). The inverter has voltage gain as high 83, which is the highest reported so far for inverters one−dimensional nanomaterials. MESFETs used in circuit show excellent transistor performance, such on/off current ratio (∼107), low threshold (∼−0.4 V), and subthreshold swing (∼60 mV/dec). With assembly of three...