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对高能量飞秒脉冲在充氩气玻璃管中自由成丝以及有空心毛细管束缚成丝两种情况下,输入脉冲能量和空心毛细管所处成丝位置等实验参数对光谱展宽的影响进行了系统的实验研究.结果表明采用空心毛细管束缚成丝,可以使被展宽光谱在短波方向上的强度获得改善.这为进一步脉冲压缩产生高能量单周期飞秒脉冲打下基础.
The effects of experimental parameters such as input pulse energy and hollow capillary position on the broadening of the spectrum were systematically studied for high-energy femtosecond pulses in free-flowing filaments in argon filled glass tubes and hollow filaments bound to filaments The experimental results show that the hollow capillary restrained filaments can improve the intensity of the broadened spectrum in the shortwave direction, which lays the foundation for further pulse compression to generate high energy single-period femtosecond pulses.