The molecular second-order nonlinear optical (NLO) properties and the powder second harmonic generation(SHG)of semicarbazide hydrochloride were studied.The molecular and crystal structure dependence of second-order no...The molecular second-order nonlinear optical (NLO) properties and the powder second harmonic generation(SHG)of semicarbazide hydrochloride were studied.The molecular and crystal structure dependence of second-order nonlinearity,transparency and thermal stability was discussed.It was also implied that semicarbazide hydrochloride as an ionic compound played important roles in designing effective second-order NLO materials.展开更多
A new kind of second order nonlinear optical(NLO) material m hydroxybenzoic acid(HBA) was reported in this paper. Primary study results revealed that it had a relatively strong nonlinearity, its powder SHG effect was ...A new kind of second order nonlinear optical(NLO) material m hydroxybenzoic acid(HBA) was reported in this paper. Primary study results revealed that it had a relatively strong nonlinearity, its powder SHG effect was 12 times that of KDP. The solid cut off wavelength λ cut off (350 nm) is very short compared to other organic second order NLO materials. The experimental results also showed that HBA had a high laser damage threshold and good characteristic thermal stability. Furthermore, We calculated its second order nonlinear hyperpolarizability β and analyzed the microscopic nonlinear properties, and found that the hydroxyl group could improve β obviously while the hydroxyl multisubstitution could hardly contribute to β values. [WT5HZ]展开更多
文摘The molecular second-order nonlinear optical (NLO) properties and the powder second harmonic generation(SHG)of semicarbazide hydrochloride were studied.The molecular and crystal structure dependence of second-order nonlinearity,transparency and thermal stability was discussed.It was also implied that semicarbazide hydrochloride as an ionic compound played important roles in designing effective second-order NLO materials.
文摘A new kind of second order nonlinear optical(NLO) material m hydroxybenzoic acid(HBA) was reported in this paper. Primary study results revealed that it had a relatively strong nonlinearity, its powder SHG effect was 12 times that of KDP. The solid cut off wavelength λ cut off (350 nm) is very short compared to other organic second order NLO materials. The experimental results also showed that HBA had a high laser damage threshold and good characteristic thermal stability. Furthermore, We calculated its second order nonlinear hyperpolarizability β and analyzed the microscopic nonlinear properties, and found that the hydroxyl group could improve β obviously while the hydroxyl multisubstitution could hardly contribute to β values. [WT5HZ]
