Abstract
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 × 10−10 cm W−1, is close to the literature values obtained from transmittance measurements using picosecond or femtosecond laser pulses.
Get full access to this article
View all access options for this article.
References
1.
Ghaleb
K. Abbas
and
Georges
J
, Spectrochim. Acta, Part A 60 , 2793 (2004 ).
2.
Seidel
B. S.
Faubel
W.
and
Ache
H. J
, J. Biomed. Opt. 2 , 326 (1997 ).
3.
Ragozina
N.
Heissler
S.
Faubel
W.
and
Pyell
U
, Anal. Chem. 74 , 4480 (2002 ).
4.
Ragozina
N.
Putz
M.
Heissler
S.
Faubel
W.
and
Pyell
U
, Anal. Chem. 76 , 3804 (2004 ).
5.
Kettler
C. N.
and
Sepaniak
M. J
, Anal. Chem. 59 , 1733 (1987 ).
6.
Nickolaisen
S. L.
and
Bialkowski
S. E
, Anal. Chem. 58 , 215 (1986 ).
7.
Waldron
K. C.
and
Dovichi
N. J
, Anal. Chem. 64 , 1396 (1992 ).
8.
Waldron
K. C.
and
Li
J.-J
, J. Chromatogr., B 683 , 47 (1996 ).
9.
Ghaleb
K. Abbas
and
Georges
J
, Spectrochim. Acta, Part A 60 , 863 (2004 ).
10.
Twarowski
A. J.
and
Kliger
D. S
, Chem. Phys. 20 , 253 (1977 ).
11.
Fang
H. L.
and
Swofford
R. L
, in Ultrasensitive Laser Spectroscopy ,
Kliger
D. S.
Ed. (Academic Press , New York , 1983 ), pp. 176 –223 .
12.
Dragonmir
A.
McInerney
J. G.
and
Nikogosyan
D. N
, Appl. Opt. 41 , 4365 (2002 ).
13.
Ghaleb
K. Abbas
and
Georges
J
, Appl. Spectrosc. 58 , 1116 (2004 ).
14.
Nikogosyan
D. N.
Oraevsky
A. A.
and
Rupasov
V. I
, Chem. Phys. 77 , 131 (1983 ).