Mo（W）－Cu（Ag）－S簇合物的非线性光学性能研究

本文介绍了非线性光学性测试中的Ｚ－扫描方法。总结了Ｍｏ（Ｗ）－Ｃｕ（Ａｇ）－Ｓ簇合物的光限制效应、非线性吸收和非线性折射等光学性质。

用Z—Scan法高精度测量非线性折射率

介绍了一种简单而灵敏的单光束测量非线性折射率ｎ２大小和符号的实验方法（Ｚ—Ｓｃａｎ）。样品在聚焦的高斯光束ｚ方向上移动，得到远场通过小孔后的透射率曲线，由该曲线很容易计算出ｎ２。使用ＣＷＣＯ２激光器对ＩｎＳｂ样品进行测量，得到该样品相对１０．６μｍ波长的非线性折射率为１．８０×１０－４ｅｓｕ。

Synthesis and crystal structure and nonlinear optical properties of polymeric W (Mo)-Cu-S cluster

The polymeric chalcogenide [W2O2S6Cu4(NCMe)4]n (compound 1) was synthesized by the self-assembly reaction of (NH4)2(WOS3) with CuBr in MeCN in the presence of tricyclohexylphosphane (PCy3) under a purified nitrogen atmosphere using standard Schlenk techniques. It gives rise to a novel 1D polymeric compound 1 with solvent MeCN coordinated to the copper atom. This situation is unprecedented in the W(Mo)/Cu/S system. The crystals were characterized by elemental analysis, IR and single-crystal X-ray crystallography. The configuration of the polymeric compound can be viewed as a helical chain which is propagated along the crystallographic c axis. The excited state absorption and refraction of compound 1 in CH3CN solution were studied by using the Z-scan technique with laser pulses of 40 ps pulse-width at a wavelength of 532 nm. The polymeric compound possesses an optical self-focusing performance. The positive nonlinear refraction is attributed to population transitions between singlet states. Compound 1 displays a strong excited-state absorption.

含铂芳香炔聚芳醚合成及性能研究

基于实现铂乙炔化合物光限幅材料的固态化和实用化的目的,通过分子设计合成了一种新型的含氟端基的铂芳香炔单体,并通过亲核反应的方式将其引入到聚芳醚主链中,制备出了溶解性优异的含铂乙炔基团的聚芳醚共聚物,最后通过流延法制备了固态光限幅膜材料。对单体和聚合物进行了结构、热性能、力学性能以及光物理表征,并对聚合物溶液和固态膜材料的非线性光学性能进行了研究。结果表明,该共聚物制成的固态膜材料具有较好的光限幅能力,同时也兼具了聚芳醚优异的热力学性能和机械性能。该研究结果为激光防护材料的固态化、实用化发展提供了新思路。