Limitations arising from two-photon absorption of solvent in pulsed-laser thermal lens detection: Determination of the two-photon absorption coefficient of ethanol at 266 nm

被引：4

作者：

Ghaleb, KA ^{[1
]}

Georges, J ^{[1
]}

机构：

[1] Univ Lyon 1, Analyt Sci Lab, UMR 5180, F-69622 Villeurbanne, France

来源：

APPLIED SPECTROSCOPY | 2006年 / 60卷 / 01期

关键词：

thermal lens spectrometry; pulsed laser; two-photon absorption coefficient; ethanol;

D O I：

10.1366/000370206775382802

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Two-photon absorption of the solvent under pulsed-laser excitation at 266 nm produces a high background thermal lens signal interfering with the analyte signal. Discrimination of both solvent and analyte signals along with calibration of the photothermal response has allowed the determination of the two-photon absorption coefficient of ethanol. The obtained value, 3.0 X 10(-10) cm W-1, is close to the literature values obtained from transmittance measurements using picosecond or femtosecond laser pulses.

引用

页码：86 / 88

页数：3

共 14 条

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