Fig. 2. Wave vector diagram inside the VHG with a plane wave reading out the VHG.
Fig. 3. Temporal total intensity inside the VHG when the propagation depth
Fig. 4. Dependence of diffracted dual pulses on VHG parameters: (a) thickness, (b) refractive index modulation, and (c) period. Pulse interval with respect to (d) thickness and (e) refractive index modulation of the VHG.
Fig. 5. Temporal total intensity inside the VHG when the grating periods are 7.3 and 13 μm.
Fig. 6. Temporal diffracted intensity under a smaller