TY - JOUR
T1 - Ultrafast gain and excited-state absorption in luminescent polymers
T2 - Pump-wavelength invariance
AU - Vacar, Dan
AU - Dogariu, Arthur
AU - Heeger, Alan J.
N1 - Funding Information:
We thank Jun Gao for assistance with sample preparation. We benefited from discussions with Kirk Miller, Dr. Daniel Moses and Dr. Duncan W. McBranch. This work was supported by the NSF under DMR 95–10387 and by the Los Alamos National Laboratory (STB/UC: 96–136).
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1998/6/26
Y1 - 1998/6/26
N2 - We report ultrafast pump-and-probe results for solutions and films of luminescent conjugated polymers. Both photoinduced absorption (PA) and stimulated emission (SE) features were recorded in the excited-state spectrum. The time evolution of the photoexcitations responsible for SE and PA were monitored as a function of the pump wavelength. We find that the PA and SE spectral features and decay dynamics of the excited state are independent of the pump wavelength. This insensitivity to pump wavelength is important for polymer-based photonic applications such as photopumped lasers and ultrafast holographic switches.
AB - We report ultrafast pump-and-probe results for solutions and films of luminescent conjugated polymers. Both photoinduced absorption (PA) and stimulated emission (SE) features were recorded in the excited-state spectrum. The time evolution of the photoexcitations responsible for SE and PA were monitored as a function of the pump wavelength. We find that the PA and SE spectral features and decay dynamics of the excited state are independent of the pump wavelength. This insensitivity to pump wavelength is important for polymer-based photonic applications such as photopumped lasers and ultrafast holographic switches.
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U2 - 10.1016/S0009-2614(98)00485-0
DO - 10.1016/S0009-2614(98)00485-0
M3 - Article
AN - SCOPUS:0032568773
SN - 0009-2614
VL - 290
SP - 58
EP - 62
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -