A5042125802- Laser-Plasma Interactions and Diagnostics
- Optical measurement and interference techniques
- Advanced Electron Microscopy Techniques and Applications
- Digital Holography and Microscopy
- Optical Systems and Laser Technology
- Laser-Matter Interactions and Applications
- Adaptive optics and wavefront sensing
- Laser Material Processing Techniques
- Crystallography and Radiation Phenomena
- Laser-induced spectroscopy and plasma
- Optical Polarization and Ellipsometry
- Advanced Optical Imaging Technologies
- Advanced Fluorescence Microscopy Techniques
- Solid State Laser Technologies
- Advanced X-ray Imaging Techniques
- Advanced Optical Sensing Technologies
- Terahertz technology and applications
Shanghai Institute of Optics and Fine Mechanics
2018-2025
University of Chinese Academy of Sciences
2018-2023
Chinese Academy of Sciences
2018-2023
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Abstract Frequency modulation (FM)-to-amplitude (AM) conversion is an important factor that affects the time–power curve of inertial confinement fusion (ICF) high-power laser facilities. This can impact uniform compression and increase risk damage to optics. However, dispersive grating used in smoothing by spectral dispersion technology will introduce a temporal delay spatially smooth target. The combined effect focusing lens equivalent Gaussian low-pass filter, which 8 GHz bandwidth reduce...
Greek ladders with diffraction-limited array foci provide a probability to realize imaging equal intensity. Here, taking the ancient Theon sequence as an example, we design optical structure and have measured focusing properties by digital holography. Then, verify multiplanar different magnifications experiment. The experimental results agree well theoretical analysis. In addition, bi-Fourier planes filtering technology is proposed solve problem of crosstalk between further improve...
Studying the light field characteristics of a target plane is critical in controlling laser-plasma instability (LPI), which necessary to increase laser energy utilization and compression symmetry high-power facilities. In this study, statistical method used analyze transmission for single multiple beams. We reconstructed model on analyzed relationships between focal spot width incidence angle, speckle angle using autocorrelation function. addition, relationship interference pattern incident...
Polarization smoothing (PS) can effectively improve the uniformity of focal spot by changing polarization distribution beam. In this paper, a technical scheme for achieving multidimensional PS cascading birefringent wedge (BW) has been proposed. A near-field and far-field diffraction transmission model with multiple continuous phase plate (CPP) was first constructed, parameters such as angle placement position BW are optimized through theoretical analysis to increase number sub-focal spots...
The crosstalk problem between the background light and signal of diffractive optical element severely degrades image quality limits practical application. In this paper, we proposed an off-axis imaging technology aimed at multifocal lenses performed geometrical analysis to investigate distribution. Off-axis ensured a high signal-to-noise ratio by separating noise spatially provided larger space for parallel synchronization processing in different plane. Taking bifocal Greek-ladder lens as...
High-power laser pulse transmitted by phase modulation with certain spectrum distribution can suppress the buildup of transverse stimulated Brillouin scattering (TSBS) in large aperture optics and smooth speckle pattern illuminating target spectral smoothing dispersion (SSD). In this paper, based on requirements double-cone ignition scheme including simultaneously realizing that focal spot is variable at different times size spatial intensity uniform, we propose a novel technology rapid...
High-power laser systems have high requirements on the size, shape, and uniformity of focal spot. Both continuous phase plate (CPP) lens array (LA) can be used for beam shaping smoothing. However, their ability is limited there are few studies cooperation CPP LA. In this paper, joint design LA was proposed, we theoretically analyzed its principle studied method to achieve better smoothing performance. Then, far-field spot properties three methods LA, CPP, combined with were obtained compared...