A5083046093- Solid State Laser Technologies
- Laser-Plasma Interactions and Diagnostics
- Laser Design and Applications
- Advanced Fiber Laser Technologies
- Laser Material Processing Techniques
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Ionosphere and magnetosphere dynamics
- Stellar, planetary, and galactic studies
- Photorefractive and Nonlinear Optics
- Advanced Optical Sensing Technologies
- Astrophysics and Cosmic Phenomena
- Laser-induced spectroscopy and plasma
- Solar and Space Plasma Dynamics
- Optical Systems and Laser Technology
- Advanced Fiber Optic Sensors
Shanghai Institute of Optics and Fine Mechanics
2010-2024
University of Chinese Academy of Sciences
2023
Chinese Academy of Sciences
2010
Abstract As optical parametric chirped pulse amplification has been widely adopted for the generation of extreme intensity laser sources, nonlinear crystals large aperture are demanded high-energy amplifiers. Yttrium calcium oxyborate (YCa 4 O(BO 3 ) , YCOB) is capable being grown with apertures exceeding 100 mm, which makes it possible application in systems petawatt scale. In this paper, we experimentally demonstrated first time to our knowledge, an ultra-broadband non-collinear amplifier...
Abstract The origin of energetic charged particles in universe remains an unresolved issue. Astronomical observations combined with simulations have provided insights into particle acceleration mechanisms, including magnetic reconnection acceleration, shock and stochastic acceleration. Recent experiments also confirmed that electrons can be accelerated through processes such as collisionless formation. However, laboratory identifying a feasible mechanism is still challenge, particularly the...
Abstract A new approach to target development for laboratory astrophysics experiments at high-power laser facilities is presented. With the dawn of lasers, has emerged as a field, bringing insight into physical processes in astrophysical objects, such formation stars. An important factor success these targetry. To date, targets have mainly relied on expensive and challenging microfabrication methods. The design presented incorporates replaceable machined parts that assemble structure defines...
We report the generation of an 8.5-nJ chirped pulse from a mode-locked all-fiber Yb-doped laser. Mode-locking is achieved through nonlinear polarization evolution (NPE) along with spectral filtering. The laser delivers 135 mW average output power positively 10.9-ps pulses. repetition rate 15.9 MHz, which results in energy 8.5 nJ per pulse. externally dechirped duration 223 fs, and 6 nJ, corresponds to peak ~27 kW.
Theory of the passively mode-locked Yb3+ doped fiber ring laser self-starting through spectral filter is presented. The all-fiber generating ultrashort pulses are designed and fabricated. High concentration was employed as gain medium, which pumped by a 980 nm diode laser. In all-normal-dispersion cavity, spliced to reduce large emission peak at 1030 ion generate an additional pulse shaping filtering chirped pulse. Self-starting stable mode-locking centered 1053 achieved nonlinear...
Without discrete optical components influencing the fiber format, all-fiber mode-locked laser has tremendous potential practical applications due to its advantages of better stability, alignment free, and compaction. All-fiber by nonlinear polarization evolution（NPE) can obtain good performances in terms pulse duration spectrum. But effective saturable absorption mirror be overdriven at high peak power, which leads multiple pulses, limiting output energy. And there is a trade-off between...
Abstract As the key part for energy amplification of high-power laser systems, disk amplifiers must work in an extremely clean environment. Different from traditional cleanliness control scheme active intake and passive exhaust (AIPE), a new method (AEPI) is proposed this paper. Combined with computational fluid dynamics (CFD) technology, through optimization design sizes, shapes, locations different outlets inlets, turbulence that unfavorable to effectively avoided amplifier cavity during...
In high-power laser system, in order to extend the components' service life and reduce operation costs, more attentions should be pay at research for damages ablation multi-layer optical components other high load components. 240ps, 35ps, 6ps 1053nm pulses has been used investigate damage resistant experiments 0° reflection films. By comparing morphology threshold of pits different width, it was superior use ultra-short pulse repair multi-layers It found that shorter width used, higher lower...
A method for electrical waveform generation based on chirped pulse stacker in intensity modulation shaping is provided as a means high precision synchronization between nanosecond shaped and compressible short inertial confinement fusion (ICF) research. The arbitrary optical could be obtained, the measured ultra-short with same or different wavelengths better than 2.75 ps root mean square error.
High repetition rate slab amplifier (HRRSA) is extraordinarily indispensable for the future fusion power plant, ultra-short laser, laser weapon, and so on. Thermal controlling decisive factor output energy of amplifier. For larger clear aperture HRRSA, flash-lamp pumped based on neodymium phosphate glass (Nd:glass) chosen with liquid cooling. The coolant circulates across Nd:glass takes off thermal induced in pumping process. A novel (Series A) whose refractive index same proposed to...
Realizing the main amplification system without window glasses is important for high-power laser devices. Not only optical components and B-integration of are reduced, but also output capability beam quality improved. While primary problem how to maintain cleanliness after being removed. In response this problem, paper proposes a cleanness control scheme suitable realizing windowless operation system.Take one device example, some work conducted: integrated design pipelines, introduction air...