A few days ago, the “Shenguang” driver upgrade device developed by the High Power Laser Physics Joint Laboratory of the Shanghai Institute of Optomechanics, the Chinese Academy of Sciences passed the comprehensive acceptance of the project organized by the relevant state departments. “Shenguang” driver upgrade device can output 8 beams with total energy of 24kJ / 3ns / 3ω nanosecond and single beam 1kJ / 1ps / 1ω picosecond laser pointer, condensing optics, electronics, precision machinery, precision machining, materials Achievements in technical research during the “12th Five-Year Plan” period in many disciplines such as science. During the trial operation, the device completed a total of 430 sub-physical experiments, in good operating condition, with a success rate better than 80%, and successfully completed the online assessment and rapid ignition decomposition and integration experiments of related physical diagnostic equipment. In the fast-fired integrated experiment, the use of short pulsed beams achieved a gain of more than 40 times the neutron yield.
The “Shenguang” driver upgrade device adopts an advanced equal-diameter four-way amplification overall configuration technology solution and a high-performance pre-amplifier level combined with a large-diameter neodymium glass CPA picosecond laser amplification overall technology solution. According to experts, in this device, the self-developed driver design and simulation software platform has realized high-performance simulation of engineering design and running performance, and has been verified and verified in engineering construction practice. Researchers successfully developed high-stability, high-quality nanosecond and picosecond front-end seed light source systems, and integrated and verified key technologies such as large-diameter isolation components, large-diameter deformable mirrors and large-diameter gratings, and realized the near field of the driver green laser pointer , Precise control of global characteristics such as far field and time waveform.
Relevant experts said that the comprehensive acceptance of the “Shenguang” driver upgrade device was completed, marking that the core technology of high-power laser driver overall design, overall integration, unit development, precision assembly and calibration, precision machining and other core technologies have reached a new level and have been developed. The technical capacity for large-scale development of laser drivers. The “Shenguang” driver upgrade device, as the first officially built inertial confinement fusion research physics experiment platform with long and short pulse output capability with picosecond pulse drive capability, will lay an important experimental foundation for the subsequent research and development of fusion physics.