Growth method of organic nonlinear optical crystal
A technology of nonlinear optics and growth method, applied in the field of growth of organic nonlinear optical crystals, can solve the problems of DAST crystal size not being ideal, affecting crystal processing and utilization, thin thickness, etc., achieving large geometric size, low cost, and growth The effect of simple method
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[0021] In this example, 4-(4-dimethylaminostyryl)picoline p-toluenesulfonate, namely DAST, was selected as the raw material for crystal growth, and the inclined plate slow cooling method was adopted. By adjusting the process parameters and optimizing the growth conditions, the crystal growth DAST crystals with large surface area and thick thickness; the specific growth process is:
[0022] (1) Dry the DAST crystal growth raw material in an oven at 100°C for 1 hour to obtain the dried DAST crystal growth raw material;
[0023] (2) Weigh 5.5g of dried DAST crystal growth raw material, dissolve it in 100mL of anhydrous methanol solution, heat and stir for 2 hours to obtain DAST methanol solution;
[0024] (3) Heat the DAST methanol solution to 50°C and filter it, and transfer the filtered filtrate into a dry and clean jar;
[0025] (4) Put the polytetrafluoroethylene plate into the jar in step (3), keep the inclination angle of the polytetrafluoroethylene plate at 45°C, and then...
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