基于瞬态光栅衍射法,采用屋脊棱镜作为关键部件,对紫外单次自相关仪进行了小型化设计,旨在使脉宽测量过程更加简易,其预期的技术指标为:1)适用波长,248~400nm;2)时间量程,5ps;3)时间分辨率,0.05ps@5ps;4)测量误差,σr<2.0%;5)机身尺寸,350mm(L)×120mm(W)×120mm(H)。该仪器的光路设计图如图1所示,其效果图如图2所示,其光路描述为:分光板将待测激光 Based on the transient grating diffraction method, roof prisms are used as key components to miniaturize the UV single-pass autocorrelator in order to make the pulse width measurement process easier. The expected technical indicators are as follows: 1) The suitable wavelength, 248 ~ 400nm; 2) time range, 5ps; 3) time resolution, 0.05ps @ 5ps; 4) measurement error, σr <2.0%; 5) body size, 350mm (L) ). The instrument’s optical circuit design shown in Figure 1, the effect shown in Figure 2, the optical path described as: splitting the laser beam to be measured