Abstract
Abstract 400 types of chalcone derivatives are synthesized to investigate on second harmonic generation(SHG). The results suggest that an alkoxy group, an alkylthio group and halogen are effective as a substituent. High quality and large size single crystals of 4-ethoxy-4′-methoxychalcone(C-607), 1-(2-thienyl)-3-(4-methylphenyl)propene-1-one(TC-28) and 1-(3-thienyl)-3-(4-chlorophenyl)propene-1-one(TC-121) are grown from the solution. These chalcone crystals are new organic nonlinear optical crystal and could be produced phase matched. The effective nonlinear optical properties are approximately twice to three times as large as that of KTP.
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