TY - JOUR
T1 - Femtosecond reflection spectroscopy in La1.5Sr 0.5CoO4
AU - Egawa, T.
AU - Okimoto, Y.
AU - Fukaya, R.
AU - Onda, K.
AU - Ishikawa, T.
AU - Koshihara, S. Y.
AU - Isayama, A.
AU - Sasagawa, T.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2012/2
Y1 - 2012/2
N2 - Ultrafast optical response has been investigated using fs laser system on a perovskite-type cobalt oxide, La1.5Sr0.5CoO4. After the photoirradiation at room temperature, the time profile of relative change of reflectance (ΔR/R) shows a sudden change within the pulse duration (≈ 150 fs) and decays with a lifetime of ≈ 330 fs. The sign of ΔR/R after the photoexcitation is positive in the mid-infrared region (at 0.50 eV) while negative in the visible energy region (at 2.0 eV), implying photoinduced change of the electronic structure after the photoexcitation.
AB - Ultrafast optical response has been investigated using fs laser system on a perovskite-type cobalt oxide, La1.5Sr0.5CoO4. After the photoirradiation at room temperature, the time profile of relative change of reflectance (ΔR/R) shows a sudden change within the pulse duration (≈ 150 fs) and decays with a lifetime of ≈ 330 fs. The sign of ΔR/R after the photoexcitation is positive in the mid-infrared region (at 0.50 eV) while negative in the visible energy region (at 2.0 eV), implying photoinduced change of the electronic structure after the photoexcitation.
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U2 - 10.12693/APhysPolA.121.307
DO - 10.12693/APhysPolA.121.307
M3 - Article
AN - SCOPUS:84857435148
SN - 0587-4246
VL - 121
SP - 307
EP - 309
JO - Acta Physica Polonica A
JF - Acta Physica Polonica A
IS - 2
ER -