A5100361553- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Force Microscopy Techniques and Applications
- Advanced Photonic Communication Systems
- Laser-Matter Interactions and Applications
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Geophysics and Sensor Technology
- Nonlinear Photonic Systems
- ZnO doping and properties
- Advanced MEMS and NEMS Technologies
- Advanced Frequency and Time Standards
- GaN-based semiconductor devices and materials
- Ga2O3 and related materials
- Photonic Crystal and Fiber Optics
- Cancer Treatment and Pharmacology
- Integrated Circuits and Semiconductor Failure Analysis
- Near-Field Optical Microscopy
- Semiconductor Lasers and Optical Devices
- Fusion materials and technologies
- Titanium Alloys Microstructure and Properties
- Metal and Thin Film Mechanics
- Intermetallics and Advanced Alloy Properties
- Electrocatalysts for Energy Conversion
University of California, Los Angeles
2018-2024
Chinese Academy of Sciences
2011-2024
Gansu Institute of Political Science and Law
2024
University of Science and Technology of China
2017-2022
University of California System
2022
Samueli Institute
2021
South China Normal University
2021
University of Shanghai for Science and Technology
2019
Universität Hamburg
2016-2018
Center for Free-Electron Laser Science
2016-2018
The first EAST (Experimental Advanced Superconducting Tokamak) plasma ignited in 2006 with non-actively cooled steel plates as the plasma-facing materials and components (PFMCs) which were then upgraded into full graphite tiles bolted onto water-cooled copper heat sinks 2008. wall was changed further molybdenum alloy 2012, while keeping for both upper lower divertors. With rapid increase heating current driving power EAST, W/Cu divertor project launched around end of aiming at achieving...
Solitons in microresonators have spurred intriguing nonlinear optical physics and photonic applications. Here, by combining Kerr Brillouin nonlinearities an over-modal microcavity, we demonstrate spatial multiplexing of soliton microcombs under a single external laser pumping operation. This demonstration offers ideal scheme to realize highly coherent dual-comb sources compact, low-cost energy-efficient manner, with uniquely low beating noise. Moreover, selecting the modes, repetition rate...
Synchronous laser-microwave networks delivering attosecond timing precision are highly desirable in many advanced applications, such as geodesy, very-long-baseline interferometry, high-precision navigation and multi-telescope arrays. In particular, rapidly expanding photon-science facilities like X-ray free-electron lasers intense laser beamlines require system-wide attosecond-level synchronization of dozens optical microwave signals up to kilometer distances. Once equipped with precision,...
Abstract Soliton frequency combs generated in microresonators offer powerful tools for optical metrology, due to the high time‐frequency resolution. Here, via exciting intracavity Brillouin laser a Q monolithic fiber resonator, pair of orthogonal Kerr soliton is generated, which share same repetition ( f rep ≈ 1.001 GHz) trapping but different central wavelengths (≈ 9.278 GHz). They rich dual‐comb beat notes with minimum phase noise down −166.5 dBc Hz −1 @1 MHz. Thanks geometric flexibility...
Modern navigation systems integrate the global positioning system (GPS) with an inertial (INS), which complement each other for correct attitude and velocity determination. The core of INS integrates accelerometers gyroscopes used to measure forces angular rate in vehicular reference frame. With help by integrating acceleration compute distance, precision compact sufficient accuracy can provide small-error location Solid-state implementations, through coherent readout, a platform high...
Dissipative Kerr soliton generation in chip-scale nonlinear resonators has recently observed remarkable advances, spanning from massively parallel communications, to self-referenced oscillators, and dual-comb spectroscopy. Often working the anomalous dispersion regime, unique driving protocols these have been examined achieve soliton-like temporal pulse shapes coherent frequency comb generation. The normal regime provides a complementary approach bridge dynamical studies, including...
With the deployment of fifth-generation (5G) mobile communication technology and rapid advancements in artificial intelligence edge computing, smart construction sites have emerged as a critical direction for industry’s transformation upgrading. However, existing intelligent Internet Things (IoT) access algorithms often struggle to simultaneously meet practical requirements high-efficiency data transmission rates, low latency, secure privacy-aware dynamic complex environments sites. To...
We demonstrate a novel scheme to generate full-duty-cycle triangular microwave waveforms using an optoelectronic oscillator (OEO). The OEO produces high-quality local signal. Thus, external source, which is usually involved in orthodox approaches obviates the need. A polarization modulator both loop and photonic filter (MPF) structure. To waveform, undesired electrical harmonics are suppressed by MPF. proposed method theoretically analyzed experimentally verified. Triangular at fundamental...
Frequency microcombs with microwave and millimeter-wave repetition rates provide a compact solution for coherent communication information processing. The implementation of these using CMOS-compatible platform further paves the way large-scale photonic integration modularity. Here, we demonstrate free-running soliton K-band very low phase noise over 4 GHz pump detuning range reaching −117 (−123) dBc / Hz at 10 kHz offset 19.7 (10) carrier without active stabilization, exceeding commercial...
Abstract Solitons, the distinct balance between nonlinearity and dispersion, provide a route toward ultrafast electromagnetic pulse shaping, high-harmonic generation, real-time image processing, RF photonic communications. Here we uniquely explore observe spatio-temporal breather dynamics of optical soliton crystals in frequency microcombs, examining spatial breathers, chaos transitions, dynamical deterministic switching – nonlinear measurements theory. To understand solitons, describe their...
A widely tunable narrow-linewidth laser consisting of a sampled-grating distributed Bragg reflector (SG-DBR) and an external silica-based multi-period-delayed feedback (MPDF) photonic circuit is fabricated experimentally demonstrated. The measured results show that 58-nm lasing wavelength tuning range together with more than 40 dB side-mode suppression ratio can be achieved. Notably, among the range, all linewidths remain below 1 kHz, which are narrowed by three orders magnitude compared to...