This project has developed a 633nm iodine steady frequency laser frequency evaluation system. The overall structure is mainly composed of the national length of the 633nm iodine steady frequency laser, new laser, frequency shooting monitoring and technical unit, and frequent evaluation system. Through design experiments, respectively In the three major measurement technology indicators of the three major measurement technical indicators of the peak frequency difference, the stability of the laser frequency, and the duplication of laser frequency, the experimental result was not certainty of the wavelength of the new system of 2.9 × 10-11 to meet the relevant technical indicators.
The correlation coefficient in this paper takes the coefficient as the evaluation index of decryption effect and analyzes the influence of different parameters on the addition and decryption effect of JTC optical images. The simulation results show that the correlation coefficient of JTC encryption system fluctuates with the center spacing. In order to achieve the best decryption effect, the best spacing between the original image and the key; JTC encryption system requires higher alignment of decryption key and encrypted image than longitudinal alignment; JTC encryption system can only when the encrypted image is close to one. These results provide a theoretical basis for the relevant experiments and reduce the difficulty of the experiment.
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