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

C. V. Bindhu | Zendy; S. S. Harilal | Zendy; V. P. N. Nampoori | Zendy; C. P. G. Vallabhan | Zendy

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

Author(s) -

C. V. Bindhu,

S. S. Harilal,

V. P. N. Nampoori,

C. P. G. Vallabhan

Publication year - 1999

Publication title -

pramana

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.513

H-Index - 52

ISSN - 0304-4289

DOI - 10.1007/bf02830109

Subject(s) - absorption (acoustics) , materials science , aqueous solution , optics , laser , thermal , rhodamine , rhodamine b , lens (geology) , excited state , two photon absorption , nonlinear optics , beam (structure) , intensity (physics) , analytical chemistry (journal) , atomic physics , fluorescence , physics , chemistry , thermodynamics , biochemistry , photocatalysis , chromatography , catalysis

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.

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