TY - JOUR
T1 - Simultaneous measurement of real and imaginary parts of nonlinear susceptibility for the verification of the Kramers-Kronig relations in femtosecond spectroscopy
AU - Kano, Hideaki
AU - Kobayashi, Takayoshi
N1 - Funding Information:
The authors would like to thank Dr. K. Misawa for valuable advice and many useful discussions. Thanks are due to Dr. H.F. Hofmann for reading the manuscript and making a number of helpful suggestions. The work is partly supported by Research for the Future of Japan Society for the Promotion of Science (JSPS-RFTF-97P-00101).
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2000/5/1
Y1 - 2000/5/1
N2 - Simultaneous measurement of continuous spectra of real and imaginary parts of complex nonlinear optical susceptibility was performed for porphyrin J-aggregates with sharp absorption peaks using a femtosecond Sagnac interferometer. A nonresonant component (χNR(3)) due to a solvent and a resonant component (χNR(3)) due to the porphyrin J-aggregates are observed. The real and imaginary parts are compared using the Kramers-Kronig (KK) relations, which are valid for linear optical susceptibility. It is shown that χR(3) satisfies the KK relations at all delay times. On the other hand, (χNR(3)) does not satisfy the KK relations at zero delay time. The validity of the KK relations, which have been reported in previous papers by our group, are verified for the first time experimentally using continuous spectra.
AB - Simultaneous measurement of continuous spectra of real and imaginary parts of complex nonlinear optical susceptibility was performed for porphyrin J-aggregates with sharp absorption peaks using a femtosecond Sagnac interferometer. A nonresonant component (χNR(3)) due to a solvent and a resonant component (χNR(3)) due to the porphyrin J-aggregates are observed. The real and imaginary parts are compared using the Kramers-Kronig (KK) relations, which are valid for linear optical susceptibility. It is shown that χR(3) satisfies the KK relations at all delay times. On the other hand, (χNR(3)) does not satisfy the KK relations at zero delay time. The validity of the KK relations, which have been reported in previous papers by our group, are verified for the first time experimentally using continuous spectra.
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U2 - 10.1016/S0030-4018(00)00624-6
DO - 10.1016/S0030-4018(00)00624-6
M3 - Article
AN - SCOPUS:0033747434
VL - 178
SP - 133
EP - 139
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 1
ER -