A5066321170- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Luminescence Properties of Advanced Materials
- Advanced Fiber Laser Technologies
- Laser Design and Applications
- Medical Imaging Techniques and Applications
- Glass properties and applications
- Spectroscopy and Laser Applications
- Advanced X-ray and CT Imaging
- Radiation Detection and Scintillator Technologies
- Radiomics and Machine Learning in Medical Imaging
- Image and Signal Denoising Methods
- Image Processing Techniques and Applications
- Advanced Radiotherapy Techniques
- Photonic Crystal and Fiber Optics
- Magneto-Optical Properties and Applications
- Ultrasound and Hyperthermia Applications
- Advanced MRI Techniques and Applications
- Ocular and Laser Science Research
- Advanced Image and Video Retrieval Techniques
- Radiopharmaceutical Chemistry and Applications
- Image Retrieval and Classification Techniques
- Semiconductor Lasers and Optical Devices
- Radiation Dose and Imaging
- Medical Imaging and Pathology Studies
Hunan University
2023-2025
Anhui Institute of Optics and Fine Mechanics
2015-2024
Hefei Institutes of Physical Science
2014-2024
Chinese Academy of Sciences
2015-2024
Southwest Jiaotong University
2017-2024
Advanced Laser Technology (United Kingdom)
2023-2024
Chongqing University of Technology
2024
Beijing Institute of Technology
2023-2024
Laser Research Institute
2021
Virginia Commonwealth University
2008-2019
Visual cross view geo-localization is generally approached within a joint retrieval-and-calibration framework. However, existing methods overlook semantic ambiguities arising from query and reference images characterized by low overlap, dynamic foregrounds, viewpoint changes, perceptual aliasing. This makes it challenging to automatically control the relative importance of two tasks, potentially compromising retrieval task in favor offset regression. Consequently, model may encounter...
Research on an efficient continuous-wave Nd:GYSGG laser at 1053 nm with excellent stability is demonstrated. The maximum output power 4.17 W, corresponding to the conversion efficiency of 33.9% and slope 42.92%. Using a Cr:YAG absorber, pulsed dual-wavelength operation 1058.4 obtained, which single pulse energy peak are 172.1 μJ 26.1 kW, respectively, when width 6.6 ns repetition rate 4.3 kHz. A polarization property observed, owing anisotropy Cr:YAG. This stably Q-switched good pump source...
Abstract Large lattice constant Y 3 Al 5 O 12 , Gd Ga (GGG), Sc 2 (YSGG), Ca 0.4 Mg 0.25 Zr 0.65 2.6 4.1 (CaMgZr:GGG), and 1.17 1.83 (GYSGG) substrate crystals with in. in diameter are grown by the Czochralski (Cz) method, their physical, chemical, optical properties analyzed compared details. The X‐ray rocking curves (XRCs) illustrate that as‐grown possess high crystalline quality. constants of six calculated GYSGG can be easily adjusted range 1.2450–1.2565 nm changing Gd/Y proportion....
We demonstrate the laser performance of a LD end-pumped Er:YSGG crystals with different doping concentrations comparatively. The experimental results show that 30 at. % crystal dimensions 2 mm ×2 ×8 has best output. In continuous-wave (CW) mode and pulse mode, maximum output powers 1.37 1.20 W are achieved, corresponding to slope efficiencies 23.62% 22.91%, respectively. To our knowledge, compared other Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The current report describes the development of a dual modality tomographic agent for both positron emission tomography and magnetic resonance imaging (PET/MRI). dual-modality in this study was based on 124I (PET) radiolabeled tri-gadolinium endohedral metallofullerene Gd3N@C80 (MRI) nanoprobe platform. outer surface fullerene cage metallofullerenes functionalized with carboxyl hydroxyl groups (f-Gd3N@C80) using previously developed procedures subsequently iodinated to produce...
We demonstrate a comparative investigation on Er,Pr:GYSGG and GYSGG/Er,Pr:GYSGG composite crystals at 2.79 μm.Simulating results show the highest temperatures are 369 K 318 K, respectively.A maximum output power of 825 mW with slope efficiency 19.2% laser energy 3.65 mJ 22.7% obtained in crystal, which have an obvious improvement than those crystal.The thermal focal lengths respectively 41 62 mm when pump is 2.5 W. All these indicate that crystal has great advantages reducing influence...
The performance of passively mode-locked Nd:GYSGG lasers was investigated for the first time. 1061.5 nm continuous wave (CW) mode-locking operation crystal achieved and pulse as short 3.1 ps have been generated with a semiconductor saturable absorber mirror (SESAM). At pump power 7.39 W, maximum average output 1.27 W obtained slope efficiency 18.9%. repetition rate 42 MHz obtained.
Er3+-doped and Yb3+/Er3+ co-doped Gd3Sc2Ga3O12 (abbreviated as Er:GSGG Yb,Er:GSGG, respectively) laser crystals are investigated by using a combination of spectroscopic measurements thermal characterizations. An absorption peak Yb,Er:GSGG crystal shifts to 970 nm its band broadens obviously, which makes the suitable for pumping diode (LD). This also exhibits shorter lifetime lower level, larger emission cross section higher conductivity than those Er:GSGG. All these factors suggest that...