Yu Zhao

ORCID: 0000-0002-6809-6059
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Research Areas
  • Advanced Fiber Laser Technologies
  • Laser-Matter Interactions and Applications
  • Photonic Crystal and Fiber Optics
  • Luminescence Properties of Advanced Materials
  • Photorefractive and Nonlinear Optics
  • Solid State Laser Technologies
  • Laser-Plasma Interactions and Diagnostics
  • High-Temperature Coating Behaviors
  • Advanced ceramic materials synthesis
  • Advanced Surface Polishing Techniques
  • Orbital Angular Momentum in Optics
  • Laser Material Processing Techniques
  • Radiation Detection and Scintillator Technologies
  • Optical Network Technologies
  • Nuclear materials and radiation effects
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Advanced X-ray Imaging Techniques
  • Nonlinear Optical Materials Studies
  • Electrospun Nanofibers in Biomedical Applications
  • Interconnection Networks and Systems
  • Lanthanide and Transition Metal Complexes
  • Microwave Dielectric Ceramics Synthesis
  • Atomic and Subatomic Physics Research
  • Photonic and Optical Devices
  • Semiconductor Lasers and Optical Devices

Chinese Academy of Sciences
2009-2021

University of Chinese Academy of Sciences
2011-2021

Institute of Physics
2021

Shanghai Institute of Optics and Fine Mechanics
1998-2020

Shanghai Institute of Ceramics
2017-2020

Jiangsu University
2017-2020

Tianjin University
2017-2020

Changchun Institute of Applied Chemistry
2009-2014

Computer Network Information Center
2012

State Key Laboratory of Rare Earth Resources Utilization
2009

SUMMARY In high bandwidth, low latency data center networks, when multiple senders simultaneously communicate with a single receiver, namely in many‐to‐one communication pattern, the burst overload receiver's switch buffers, which leads to Transmission Control Protocol (TCP) throughput collapse. This is so‐called TCP Incast problem. It has become new hot research topic recent years. Also, many proposals have been put forward from aspects of layers including link layer, transport and...

10.1002/dac.2402 article EN International Journal of Communication Systems 2012-07-11

Abstract Using the tape casting method combined with vacuum sintering and hot isostatic pressing, high‐quality planar waveguide YAG /10 at.%Yb: / ceramics were successfully prepared. For sample presintered at 1750°C for 30 hours then HIP ed 1700°C 3 in 200 MP a argon, in‐line transmittance reached 82.5% 400 nm average grain size was ~17.1 μm. The diffusion behaviors of Yb ions across contact boundary between cladding layer core Yb: determined by Fick's second law. Then, 1030 continuous‐wave...

10.1111/jace.16040 article EN Journal of the American Ceramic Society 2018-08-31

We numerically investigate the generation of wavelength-tunable few-cycle pulses in visible spectral region through soliton-plasma interactions. found that a He-filled single-ring photonic crystal fiber (SR-PCF), interactions could shift optical spectra propagating to shorter wavelengths. Through adjusting single pulse energy launched into fiber, central wavelength these blueshifting be continuously tuned over hundreds nanometers, while maintaining high conversion efficiency >57%. Moreover,...

10.1364/oe.26.034977 article EN cc-by Optics Express 2018-12-21

We experimentally report the generation of wavelength-tunable blueshifting soliton in visible spectral region through a gas-filled single-ring photonic crystal fiber (SR-PCF). In particular, He-filled SR-PCF, we observed sharp narrow-band peak at first resonant which results from phase-matched nonlinear processes. To best our knowledge, this is time investigating influence core-cladding resonance on soliton. addition, when Ar gas was filled into some interference fringes were high...

10.1364/ol.44.001805 article EN Optics Letters 2019-03-28

We investigate in the experiments ionization-induced adiabatic soliton compression process a short length of He-filled single-ring photonic crystal fiber. observe that plasma-driven blueshifting solitons show little residual light near pump wavelength certain pulse energy region, leading to high-efficiency frequency upconversion process. In contrast, at high levels, we quality upshifting is impaired due existence dynamical loss channel induced by coupling linear modes wavelength. addition,...

10.1364/ol.44.005562 article EN Optics Letters 2019-11-08

Ultrashort laser pulses, featuring remarkable spectral tunability, are highly demanded for nonlinear light-matter interactions in a variety of molecules. Here, we report on the generation soliton-plasma-driven ultrashort pulses with both bandwidth- and wavelength-tunability visible region. Using He-filled single-ring photonic crystal fiber (SR-PCF), demonstrate experiments that bandwidths blueshifting solitons can be manipulated by adjusting input pulse energy, gas pressure core diameter...

10.1364/oe.27.030798 article EN cc-by Optics Express 2019-10-10

The propagation dynamics of radially polarized (RP) pulses in a gas-filled hollow-core fiber (HCF) is numerically studied. It found that the stable transverse mode RP pulse HCF not TM01 mode, nor any eigenmodes terms Bessel functions. Compared with linearly (LP) pulses, same initial duration and energy have higher transmission efficiency, more uniform spectral broadening, cleaner temporal profile after highly nonlinear better focusing properties. These results suggest energetic few-cycle can...

10.1364/oe.25.003083 article EN cc-by Optics Express 2017-02-06

The compression of high-energy, radially polarized pulses in a gas-filled hollow-core fiber (HCF) is theoretically studied. simulation results indicate that 40-fs input pulse can be compressed to full-width at half-maximum less than 9 fs when the energy reaches 7.0 mJ with transmission efficiency more 67% after propagating through 1-m-long, 500-μm diameter HCF filled neon. Furthermore, spatio-temporal intensity distributions different initial energies are studied, and numerical uniform for...

10.1364/oe.25.020866 article EN cc-by Optics Express 2017-08-18

We numerically study the self-compression of optical pulses centered at 1.8- in a hollow-core fiber (HCF) filled with argon. It is found that pulse can be self-compressed to 2 cycles when input energy 0.2-mJ and gas pressure 500-mbar (1 bar=105 Pa). Inducing proper positive chirp into lead shorter temporal duration after self-compression. These results will benefit generation energetic few-cycle mid-infrared pulses.

10.1088/1674-1056/26/10/104206 article EN Chinese Physics B 2017-09-01

The optical second harmonic generation (SHG) efficiency of hexagonal boron nitride (h-BN) layered materials is profoundly influenced by the symmetry properties, which has severely limited usefulness their SHG for nonlinear applications. Herein, we report on controlled growth large-area and continuous ultrathin h-BN films with a high density exposed edges that show strongly enhanced SHG, owing to breaking inversion occurring naturally at edge sites. edge-enriched BN was accomplished through...

10.1021/acs.jpclett.1c02751 article EN The Journal of Physical Chemistry Letters 2021-09-24

Accurate and fast characterization of spatiotemporal information high-intensity, ultrashort pulses is crucial in the field strong-field laser science technology. While conventional self-referenced interferometers were widely used to retrieve spatial profile relative spectral phase pulses, additional measurements temporal at a particular position beam were, however, necessary remove indeterminacy, which increases system complexity. Here we report an advanced, dual-functional interferometer...

10.1364/ol.403575 article EN Optics Letters 2020-08-19
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