10TW装置中,经过多通放大之后的飞秒脉冲需要通过双光栅两通的结构进行脉宽的压缩,目标是将脉宽压缩到40fs之内。为避免在空气中传输的损耗并有效保护光栅,整个脉宽压缩器将建立在一个真空度低于10Pa的真空室中。而作为10TW装置整个真空系统的一部分,除完善其自身功能的设计之外,还应考虑与其它真空部分的连接和隔离。设计方案如图1所示,设计中主要在以 In the 10TW device, the femtosecond pulse after multi-pass amplification needs to be pulse-width-compressed by a double-raster two-pass structure, and the goal is to compress the pulse width within 40 fs. To avoid transmission losses in air and effectively protect the grating, the entire pulse width compressor will be built in a vacuum chamber with a vacuum of less than 10 Pa. As part of the complete vacuum system of a 10TW unit, in addition to improving its own functional design, connections to and isolation from other vacuum sections should also be considered. Design program shown in Figure 1, the design is mainly in