四叔丁基萘酞菁铅化合物的非线性和光限幅特性

合成了四叔丁基萘酞菁铅(t-Bu)₄NcPb]化合物. 利用元素分析、红外光谱、核磁共振氢谱等方法, 验证了化合物的分子结构. 应用调Q倍频ns/ps Nd:YAG脉冲激光系统, 在波长为532 nm下, 研究了化合物的非线性和光限幅特性. 测得化合物的非线性折射率n₂和三阶非线性极化率χ⁽³⁾分别为2.42×10^－11和7.91×10^－12 esu, 通过计算得到分子极化率γ'为3.4×10^－29 esu. 在透过率69%时限幅阈值为1522 mJ/cm², 箝位值为553 mJ/cm², 有效激发态与基态吸收截面比为3.16.

Nonlinear and Optical Limiting Properties of Tetra tert-Butylnaphthalocyanine Lead

The compound of tetra tert-butylnaphthalocyanine lead was synthesized. The structure of the compound was characterized by means of elemental analysis, infrared spectrum and hydrogen nuclear magnetic resonance spectrum. A frequency-doubled Q switched Nd:YAG pulse laser system with ns/ps laser pulse was used for studying the nonlinear and optical limiting properties of the synthesized compound at the wavelength of 532 nm. The nonlinear refracting index, n₂, and third-order nonlinear polarizability, χ⁽³⁾ were determined to be 2.54×10^－11 and 9.51×10^－12 esu, respectively. The molecular polarizability of the compound γ' was calculated to be 3.3×10^－29 esu. When visible light transmittance was 69%, the limiting threshold value was 1522 mJ/cm², the clamp value was 553 mJ/cm², and the ratio of absorption sectional area of effective excited state to that of ground state was 3.16.