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The XingGuang III (XGIII) laser facility at the Science and Technology on Plasma Physics Laboratory at the Laser Fusion Research Center is unique in the world and consists of one 0.7 PW picosecond beam, one 0.6 PW femtosecond beam and one 1 kJ nanosecond laser beam. The three laser beams with different wavelengths and durations can converge in the target chamber with high spatial and temporal synchronization. Because of its smart beam configurations, XGIII providesunique opportunities for multi-beam pump–probe experiments in research fields such as high-energy density physics, plasma physics and laboratory astrophysics. Laser-driven high-energy particle beams were experimentally investigated, and found to play an important role in pump–probe schemes. High-energy electrons, protons, positrons and their experimental scalings were obtained using the picosecond laser beam with an intensity of 1019 W cm−2. A two-beam pump–probe experiment was demonstrated in which the plasma channel of the femtosecond laser pulse propagating in underdense plasma was imaged by a proton beam driven by the picosecond laser. Furthermore, a three-dimensional reconstruction of the plasma structure may be achieved in multi-beam pump–probe experiments with XGIII. [ABSTRACT FROM AUTHOR]

We report on a wide-band and stable mode-locked all-polarization-maintaining fiber laser configuration using a nonlinear optical loop mirror. The central wavelength of the laser is 1080.14 nm and the 3 dB bandwidth is 20.29 nm. The repetition rate of the pulse is 3.28 MHz and the pulse width is 848 ps. By tuning the pump power, which is centered at 980 nm, from 300 mW to 380 mW, we obtain a linearly changed output power from 6mW to 7.12 mW. The all-polarization-maintaining fiber configuration is fundamental to the stability of the output power. [ABSTRACT FROM AUTHOR]