Lei Chen

ORCID: 0000-0002-1490-2510
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About
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Research Areas
  • Orbital Angular Momentum in Optics
  • Random lasers and scattering media
  • Plasmonic and Surface Plasmon Research
  • Mechanical and Optical Resonators
  • Photonic and Optical Devices
  • Advanced Optical Sensing Technologies
  • Near-Field Optical Microscopy
  • Advanced Fluorescence Microscopy Techniques
  • Galaxies: Formation, Evolution, Phenomena
  • Quantum chaos and dynamical systems
  • Advanced Fiber Laser Technologies
  • Solar and Space Plasma Dynamics
  • Earthquake Detection and Analysis
  • Ionosphere and magnetosphere dynamics
  • Calibration and Measurement Techniques
  • Digital Holography and Microscopy
  • Geophysical and Geoelectrical Methods
  • Optical Coherence Tomography Applications
  • Geophysical Methods and Applications
  • Microfluidic and Bio-sensing Technologies
  • Quantum optics and atomic interactions
  • X-ray Spectroscopy and Fluorescence Analysis
  • Quantum Information and Cryptography
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Cold Atom Physics and Bose-Einstein Condensates

Foshan University
2021

Shanghai Jiao Tong University
2001-2021

The University of Texas at Austin
1997-2005

Bureau of Economic Analysis
1997

Abstract Fizeau’s experiment, inspiring Einstein’s special theory of relativity, reveals a small dragging effect acting on light inside moving medium. Dispersion can enhance such drag according to Lorentz’s predication. Here fast- and slow-light-enhanced is demonstrated experimentally in optical microcavity through stimulated Brillouin scattering induced transparency absorption. The strong dispersion provides an enhancement factor up ~10 4 , greatly reducing the system size down micrometer...

10.1038/s42005-020-0386-3 article EN cc-by Communications Physics 2020-06-29

Abbe's resolution limit, one of the best-known physical limitations, poses a great challenge for any wave system in imaging, transport, and dynamics. Originally formulated linear optics, Abbe limit can be broken using nonlinear optical interactions. We extend theory into regime experimentally demonstrate far-field, label-free, scan-free super-resolution imaging technique based on four-wave mixing to retrieve near-field scattered evanescent waves, achieving sub-wavelength λ / 5.6. This method...

10.1117/1.ap.3.2.025001 article EN cc-by Advanced Photonics 2021-04-01

Interparticle forces play a crucial role in nanoparticle-based nanoscience and nanoengineering for synthesizing new materials, manipulating nanoscale structures, understanding biological processes ultrasensitive sensing.

10.1039/c9nr04906a article EN Nanoscale 2019-01-01

Super-resolution optical imaging is a rapidly emerging technology enabling many applications. Recently, correlation has shown its capability in beyond the diffraction limit, relying on quantum and statistical properties of light. High-order can further enhance resolution, however, at expense complicated algorithms. Here, we experimentally demonstrate resolution-enhanced method through scattering media by exploiting high-order fluorescence Based this method, individual fluorophores' temporal...

10.1364/ao.58.002350 article EN Applied Optics 2019-03-14

DNA molecules are hard to catch using traditional optical trapping due the nanometer width of their chains. Here we experimentally demonstrate a label-free single micrometer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>λ</mml:mi> </mml:math> -DNA in solution by aid plasmonic gold nanoparticles (GNPs), where double-laser trap induces strong interparticle forces for tweezer. We examine such sub-resolved tracking GNP dynamics solution. Moreover,...

10.1364/ol.420957 article EN Optics Letters 2021-02-22

Imaging through a dynamical opaque scattering medium is an almost impossible task, where strong multiple light from moving scatters dynamically prevents imaging formations even with state-of-art techniques like correlation or adaptive optics. Meanwhile, small number of ballistic photons can still penetrate but require demanding detection in terms ultrashort time gate and high sensitivity. However, visible strongly scattered for most media. Here we experimentally demonstrate non-invasive...

10.1364/oe.433513 article EN cc-by Optics Express 2021-08-26

Coherent excitation of phonons by optical waves, one the most important channels for light-matter interactions, provides a promising route manipulation microscopic acoustic quantum opto-mechanic and phononic devices. Prior research, such as stimulated Brillouin scattering (SBS) in fibers, mainly emphasized phonon amplitude modulation; however, coherent phase control these has not yet been well explored. Here we experimentally demonstrate new mechanism to coherently phases seeded SBS scheme...

10.1364/ol.44.002270 article EN Optics Letters 2019-04-23

Laser scanning photothermal imaging offers a powerful non-destructive testing tool to visualize subsurface structures of opaque materials, but it suffers the resolution limit imposed by thermal diffusion. To overcome this physical obstacle, tightly focused excitation beam with high repetition rate is usually used improve spatial resolution. Here, we demonstrate that could be enhanced using high-order correlation method inspired correlated optical imaging. By carefully designing laser and...

10.1364/ol.396780 article EN Optics Letters 2020-09-21
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