推拉型偶氮化合物双光子吸收系数的测量

Measurement of TwoPhoton Absorbancefor Pushpull Azobenzene Compounds

用皮秒激光和Ｚ－Ｓｃａｎ技术测量了推拉型偶氮化合物（４－甲基氨基－４－硝基偶氮苯）掺杂薄膜的双光子吸收，得到了双光子吸收系数β为２３×１０－８ｃｍ／Ｗ，品质因子Ｔ为０．３的化合物，这表明该材料可能是光开关器件的一种具有应用前景的材料。

The twophoton absorption of the doped thin film of a selfmade pushpull azobenzene compounds,4Nmethylamino 4nitroazobenzene (MANA), was measured with the ps laser and ZScan technique. The twophoton absorption coefficient β 23×10-8cm/W and the merit of figure T 0.3 were obtained. It showed the material had application potential in alloptical switch.