Fig. 1. System design block diagram

Fig. 2. Schematic diagram of the optical path of the intensity modulator

Fig. 3. Structure diagram of wavelength conversion module

Fig. 4. Wave vector relationship

Fig. 5. Angle relationship corresponding to the best efficiency at different temperatures

Fig. 6. Conversion efficiency at 1064 nm at different temperatures

Fig. 7. Spot diagram before wavelength conversion

Fig. 8. Spot diagram after wavelength conversion

Fig. 9. Experimental setup of wavelength conversion system

Fig. 10. Schematic diagram of the rising edge and falling edge of a square wave signal

Fig. 11. The fitting result of the relative change of the narrow pulse signal

Fig. 12. Diagram of sinusoidal waveform change

Fig. 13. Fitting curve of fundamental frequency waveform time-domain variation