Fig. 1. Structure of transmissive G system[18]

Fig. 2. Optical path structure of total-reflective ultra-short-pulse measurement system. (a) Top view; (b) side view

Fig. 3. Optical path diagrams of pulse transmission. (a) Pulse from Fresnel bi-mirror; (b) pulse on crystal surface

Fig. 4. Relationship between bottom angle of Fresnel bi-mirror and time width of pulse to be tested

Fig. 5. Relationship between crystal position and bottom angle of Fresnel bi-mirror

Fig. 6. Optical path of pulse passing through cylindrical mirror

Fig. 7. Relationship between focal length of cylindrical mirror and time width of pulse to be tested