Investigation of nonlinear absorption and aggregation in aqueous solutions of rhodamine B using thermal lens technique

被引：4

作者：

Bindhu, CV ^{[1
]}

Harilal, SS

Nampoori, VPN

Vallabhan, CPG

机构：

[1] Cochin Univ Sci & Technol, Int Sch Photon, Laser Div, Cochin 682022, Kerala, India

[2] Sree Narayana Coll, Dept Phys, Cherthala 688582, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 1999年 / 52卷 / 04期

关键词：

thermal lensing; nonlinear absorption; rhodamine B;

D O I：

10.1007/BF02830109

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thermal lensing effect was studied in aqueous solutions of rhodamine B using 532 nm, 9 ns pulses from a Nd:YAG laser. A low intensity He-Ne laser beam was used for probing the thermal lens. Results obtained show that it is appropriate to use this technique for studying nonlinear absorption processes like two photon absorption or excited state absorption and for analyzing dimerization equilibria.

引用

页码：435 / 442

页数：8

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