摘 要: | 1 INTRODUCTION In the last two decades, the extended field of non-linear optical (NLO) applications (frequency conver-sion, optical parametric amplification and oscillationetc) has stimulated search for highly nonlinear opticalmaterials[1~3]. Especially, organic NLO materials arerapidly investigated due to their large nonlinear sus-ceptibility, inherent synthetic flexibility, high opticaldamage thresholds and intrinsic tailorability[4~6]. It isknown that the solution growth technique a…
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