Pump-probe thermal lens near-infrared spectroscopy and Z-scan study of zinc (tris) thiourea sulfate

We demonstrate a novel use of the pump-probe thermal lens spectroscopy and Z-scan techniques for the measurement of the small absorption coefficient in a semiorganic, nonlinear optical crystal zinc (tris) thiourea sulphate. We measure the absorption spectrum and the absolute values of the absorption...

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Bibliographic Details
Published in:Journal of applied physics 2001-05, Vol.89 (9), p.4939-4943
Main Authors: Gupte, Sonal S., Marcano O., A., Pradhan, Ranjit D., Desai, C. F., Melikechi, Noureddine
Format: Article
Language:English
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Summary:We demonstrate a novel use of the pump-probe thermal lens spectroscopy and Z-scan techniques for the measurement of the small absorption coefficient in a semiorganic, nonlinear optical crystal zinc (tris) thiourea sulphate. We measure the absorption spectrum and the absolute values of the absorption of the crystal in the near-infrared region (700–980 nm). A maximum absorption coefficient of ∼0.04 cm-1 is reported.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1358325