Room-temperature optical excitation zinc oxide phonon vibrating terahertz laser
A terahertz and laser technology, applied in the field of terahertz lasers, to achieve the effects of low material cost, simple and easy experimental conditions, and non-toxic material cost
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[0047] The first step is to prepare self-assembled zinc oxide mesomorphic microspheres: 0.002 mol (0.59 g) zinc nitrate hexahydrate Zn(NO3) 6H2O and 5 ml sodium polystyrene sulfonate (PSS, average molecular weight M W ≈ 100 000 gmol -1 , solid content: 20%) were dissolved in 30 ml of deionized water and stirred for 5 minutes. Then 0.002 mol (0.28 g) of hexamethyltetrammine (HMT) was added into the solution and stirred for 10 minutes. Pour the above-prepared solution into a 35 ml polytetrafluoroethylene-lined hydrothermal kettle, tighten the lid of the kettle and place it in a resistance oven, and react at a temperature of 95°C for 3-10 hours. After the reaction was completed, the hydrothermal kettle was taken out and cooled naturally at room temperature. Remove the supernatant clear solution in the reaction solution, then pour the precipitate into a centrifuge tube and add deionized water and ethanol solution for repeated washing and centrifugation. Put the washed sediment ...
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